Step-by-step explanation:
If 13% of people own dogs, then the probability that a randomly selected person owns a dog is 0.13. Assuming that the ownership of dogs is independent between people, the probability that two randomly selected people both own a dog is equal to the product of their individual probabilities:
P(both own a dog) = P(1st person owns a dog) * P(2nd person owns a dog | 1st person owns a dog)
P(both own a dog) = 0.13 * 0.13
P(both own a dog) = 0.0169
Therefore, the probability that two people picked at random both own a dog is 0.0169 or approximately 1.69%.
complete the table below.
4775 g968r648 747474874 483892874 23773259635y84b2375789325 7437594365825 4378574937587 49388959365n 98437858746587 32o4iy548569
Answer:
?
Step-by-step explanation:
THERE ARE 2 PARTS PLEASE ANSWER BOTH RIGHT TY HELPP!! There are 12 red cards, 17 blue cards, 14 purple cards, and 7 yellow cards in a hat.
Part A. What is the theoretical probability of drawing a purple card from the hat?
Part B.
In a trial, a card is drawn from the hat and then replaced 1,080 times. A purple card is drawn 324 times. How much greater is the experimental probability than the theoretical probability?
Enter the correct answers in the boxes.
A. The theoretical probability of drawing a purple card from the hat is ______.
B. The experimental probability of drawing a purple card is ____%
greater than the theoretical probability.
Part A. The probability pf drawing a purple card out of the hat is 28%.
Part B. The experimental probability is 2% greater than the theoretical probability.
Define probability?The probability that a specific event will occur is known as probability. The ratio of favourable outcomes to all other possible outcomes serves as a stand-in for the likelihood that an event will occur.
In numerous disciplines, including mathematics, statistics, physics, economics, and computer science, uncertain events are described and understood using probability theory. It is used to analyse risks, make decisions, and forecast events.
Now in the given question,
Total cards in the hat = 12 + 17 + 14 + 7 = 50 cards
Total purple cards in the hat = 14
Probability of getting a purple card from the hat = 14/50
= 0.28
= 28%
Now similarly for the experiment,
Probability = 324/1080
= 0.3
= 30%
Therefore, the experimental probability is 30% - 28% = 2% greater than the theoretical probability.
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list all symmetry groups that are the symmetry groups of quadrilaterals and for each group sketch a quadrilateral
The quadrilaterals which have both line and rotational symmetry of order more than 1 are square, and rhombus
Symmetry is a fundamental concept in mathematics and geometry. It refers to the property of a shape that remains unchanged when it is transformed in a certain way.
Now, let's talk about quadrilaterals that have both line and rotational symmetry of order more than 1. One example of such a quadrilateral is a square.
Another example of a quadrilateral with both line and rotational symmetry of order more than 1 is a rhombus. A rhombus is a type of quadrilateral where all four sides are equal in length, and opposite angles are equal.
In summary, a square and a rhombus are examples of quadrilaterals that have both line and rotational symmetry of order more than 1.
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Complete Question:
Name the quadrilaterals which have both line and rotational symmetry of order more than 1.
help I’ll give brainliest ^•^ just question (7) thanks!!
Answer:
To shift the graph of f(x) = |x| to have a domain of [-3, 6], we need to move the left endpoint from -6 to -3 and the right endpoint from 3 to 6.
A translation to the right by 3 units will move the left endpoint of the graph of f(x) to -3, but it will also shift the right endpoint to 6 + 3 = 9, which is outside the desired domain.
A translation to the left by 3 units will move the right endpoint of the graph of f(x) to 3 - 3 = 0, which is outside the desired domain.
A translation upward or downward will not change the domain of the graph, so options B and D can be eliminated.
Therefore, the correct answer is C g(x) = x - 3. This translation will move the left endpoint to -3 and the right endpoint to 6, which is exactly the desired domain.
HELP ME ITS DUE TODAY!!!
Answer:
see step by step
Step-by-step explanation:
He can spin a lot of times the wheel, Notice IF THE SPINNER IS FAIR the probability must be equally, since the spinner have 4 options it must have 0.25 (25%) probability in each of the colors. Of course, since the probability is random the theoretically probability need to be closer to 0.25 for each one, to evade the randomness Klevon can spin the spinner a lot of times.
(for example, if he spins 100 times, he can get 28, 31, 25 and 20 and the spinner can still be fair, he can spin another 100 times to see the results, but if he have 5,5,80, 5 in the results, the probability is really low of this happening, so its probability unfair, but still, posible)
f(n) = 45 . J |K 4 5 n-1 Complete the recursive formula of f(n). ƒ(1) = f(n) = f(n-1).
Answer:
It looks like there might be a typo in the expression given. Assuming that "J" and "K" are just placeholders, we can write the expression as:
f(n) = 45 * |4 - 5(n-1)|
To find the recursive formula for this sequence, we need to determine how each term relates to the previous term. We can start by looking at the first few terms of the sequence:
f(1) = 45 * |4 - 5(1-1)| = 45 * |4 - 5(0)| = 45 * |4| = 180
f(2) = 45 * |4 - 5(2-1)| = 45 * |4 - 5(1)| = 45 * |-1| = 45
f(3) = 45 * |4 - 5(3-1)| = 45 * |4 - 5(2)| = 45 * |-6| = 270
From this, we can see that the sign of the expression inside the absolute value changes with each term, alternating between positive and negative. Furthermore, the magnitude of this expression increases by 5 with each term. We can use these observations to write the recursive formula:
f(1) = 180
f(n) = f(n-1) + (-1)^(n-1) * 5 * 45 for n >= 2
This formula says that the first term in the sequence is 180, and each subsequent term is found by adding or subtracting 225 (5 * 45) from the previous term, depending on whether n is odd or even.
(please mark my answer as brainliest)
given natural numbers a and b not both equal to 0, we know that there exist integers k and l with ak bl
The equation can be rearranged to the form y = -qx + r. This is the equation of a straight line, which can be graphed. The point of intersection of the two lines, ak + bl = 0 and y = -qx + r, is the solution for the two variables (k and l).
The equation ak + bl = 0 is a linear equation in two variables and is solved using the method of elimination. The equation can be written in the form ax + by = c, where a, b, c are constants. To solve this equation, both sides of the equation should be divided by the coefficient of one of the variables (a or b). This will result in a equation of the form x + qy = r, where q and r are constants. Then, the equation can be rearranged to the form y = -qx + r. This is the equation of a straight line, which can be graphed. The point of intersection of the two lines, ak + bl = 0 and y = -qx + r, is the solution for the two variables (k and l). The two variables can then be calculated using the point of intersection by substituting the x and y values into the two equations. In this way, the two variables k and l can be found such that ak + bl = 0.
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What are the integers k and l such that ak + bl = 0?
The distribution of pitches thrown in all the at-bats in a baseball game is as follows
The probability of a pitcher throwing exactly 5 pitches in an at-bat is 0.1 or 10%.
What is probability and how is it calculated?
Probability is a measure of the likelihood of an event occurring. It is expressed as a number between 0 and 1, where 0 indicates that the event is impossible and 1 indicates that the event is certain. The probability of an event A is calculated as the ratio of the number of outcomes that correspond to event A to the total number of possible outcomes.
Calculating probability of a pitcher throwing exactly 5 pitches :
To calculate the probability of a pitcher throwing exactly 5 pitches in an at-bat, we need to add up the frequencies of all the at-bats that have exactly 5 pitches. From the given table, we see that there are 8 at-bats that have exactly 5 pitches.
The total number of at-bats is the sum of the frequencies of all pitch counts.
Total number of at-bats = 12+16+32+12+8 = 80
Therefore, the probability of a pitcher throwing exactly 5 pitches in an at-bat is:
P(5) = Frequency of 5-pitch at-bats / Total number of at-bats
P(5)= 8/80 = 0.1 or 10%
Hence, the probability that a pitcher will throw exactly 5 pitches in an at-bat is 10%.
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Wich one of the following expressions is equivalent to 7/tan b+ 7 tan b
Therefore, the expression [tex]\frac{7}{Tanb} +7Tanb[/tex] is equivalent to function. [tex]7*secb*cscb[/tex].
What is trigonometry?Trigonometry is a branch of mathematics that deals with the relationships between the sides and angles of triangles. It includes the study of trigonometric functions such as sine, cosine, tangent, cotangent, secant, and cosecant, as well as their properties and applications.
Trigonometry is useful in a wide range of fields, including engineering, physics, navigation, astronomy, and surveying. It is often used to solve problems involving triangles, such as determining the height of a tall object, finding the distance between two points, or calculating the trajectory of a moving object.
The origins of trigonometry can be traced back to ancient civilizations such as the Babylonians, Greeks, and Indians, who developed various methods for calculating angles and distances. Today, trigonometry is an important part of mathematics education and continues to be used extensively in many fields of study.
Given by the question.
To simplify the expression 7/tan b + 7 tan b, we need to first recall the following trigonometric identity:
tan(x) * cot(x) = 1
Using this identity, we can rewrite the expression as:
[tex]\frac{7}{Tanb} +7Tanb[/tex]
= [tex]\frac{7}{Tanb} +7Tan^{2} b*cotb\\[/tex]
=[tex]\frac{7}{Tanb} +7*(sin^{2}/cos^{2}b)*(cosb/sinb)[/tex]
= [tex]\frac{7}{Tanb} +7*(cosb/sinb)[/tex]
= [tex]7*(1/tanb+sinb/cosb[/tex]
[tex]=7*(cosb/sinb+sinb/cosb)\\=7*((cos^{2}b+sin^{2}b)/(sinb/cosb))\\ =7*(1/(sinb/cosb))\\=7*secb*cscb[/tex]
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If 5 is increased to 9, the increase is what percentage of the original number
Answer: It's a 80% increase
Step-by-step explanation:
the dcpromo wizard will guide you through which of the following installation scenarios? [check all that apply]
The Dcpromo wizard will guide you through e. All of the above installation scenarios
A utility in Active Directory called DCPromo (Domain Controller Promoter) installs and uninstalls Active Directory Domain Services and promotes domain controllers. Since Windows 2000, every version of Windows Server contains DCPromo, which creates forests and domains in Active Directory. It works with Windows Server and houses all network resources as a centralised security management solution.
The functionality aids in building a completely new forest structure. It allows for both the addition of a new domain tree to an existing forest and the addition of a child domain to an existing domain. Additionally, it degrades the domain controllers and ultimately deletes a domain or forest.
Complete Question:
The dcpromo wizard will guide you through which of the following installation scenarios? [check all that apply]
Creating an entirely new forest structure.
Adding a child domain to an existing domain.
Adding a new domain tree to an existing forest.
Demoting domain controllers and eventually removing a domain or forest
All of the above
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Find the dimensions of a rectangle with area 1,000 m^2 whose perimeter is as small as possible. (If both values are the same number, enter it into both blanks.)What is m (smaller value)What is m (Larger value)
10√10 is the dimensions of a rectangle with area 1,000 m² whose perimeter is as small as possible.
a. The smaller value is 10√10 m.
b. The larger value is 10√10 m.
We have to determine the dimensions of a rectangle with area 1,000 m² whose perimeter is as small as possible.
P = 2w + 2L
1000 = Lw
P = 2w + 2(1000/w)
P = 2w + 2000/w
P-prime = 2 -2000/w²
0 = 2 - 2000/w²
Add 2000/w² on both side, we get
2000/w² = 2
Multiply by w² on both side, we get
2000 = 2w²
Divide by 2 on both side
w² = 2000/2
w² = 1000
Taking square root on both side, we get
w = 10√10
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can you help me to solve this question?
A=?
B=?
C=?
D=?
The slope of the secant line joining (2, f(2)) and (7, f(7)) is 8.6.
What is slope of secant line?Rise over run is the definition of a line's slope. A curve's secant line is a line that connects any two of its points. The slope of the secant line would change to the slope of the tangent line at the point when one of these points approaches the other. As a secant line is also a line, we may calculate its slope using the slope of a line formula.
The two points on the secant line are given as (2, f(2)) and (7, f(7)).
Substituting the values in the function we have:
f(x) = x² + 8x
f(2) = 2² + 8(2) = 20
f(x) = x² + 8x
f(7) = 7² + 8(7) = 63
Using the difference quotient the slope of the line is:
(f(7) - f(2)) / (7 - 2) = (63 - 20) / 5 = 8.6
Hence, the slope of the secant line joining (2, f(2)) and (7, f(7)) is 8.6.
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Question 11 (2 points)
Among the seniors at a small high school of 150 total students, 80 take Math, 41
take Spanish, and 54 take Physics. 10 seniors take Math and Spanish. 19 take Math
and Physics. 12 take Physics and Spanish. 7 take all three.
How many seniors take Math and Spanish, but not Physics?
Note: Consider making a Venn Diagram to solve this problem.
3
10
27
121
There are 3 seniors who take Math and Spanish, but not Physics.
What is Venn Diagram?
A diagram representing mathematical or logical sets pictorially as circles or closed curves within an enclosing rectangle (the universal set), common elements of the sets being represented by the areas of overlap among the circles.
To solve this problem, we can use a Venn diagram to organize the information given about the students.
First, we know that there are 150 seniors in total, so we can label the outer rectangle of the Venn diagram as having a total of 150 students.
Next, we can label the three circles as Math, Spanish, and Physics, with the numbers given in the problem:
80 seniors take Math, so we label the Math circle with 80.
41 seniors take Spanish, so we label the Spanish circle with 41.
54 seniors take Physics, so we label the Physics circle with 54.
We also know that 10 seniors take Math and Spanish, 19 take Math and Physics, 12 take Physics and Spanish, and 7 take all three. We can label these overlaps in the Venn diagram as follows:
The overlap of Math and Spanish is 10.
The overlap of Math and Physics is 19.
The overlap of Physics and Spanish is 12.
The overlap of all three is 7.
To find the number of seniors who take Math and Spanish, but not Physics, we need to subtract the number of seniors who take all three (because they are counted in all three circles) and the number of seniors who take Math, Spanish, and Physics (because they are counted in the overlap of all three circles). Then we add the number of seniors who take only Math and Spanish (because they are not counted in the Physics circle).
Using the formula for the number of elements in the union of three sets, we have:
Math or Spanish or Physics = Math + Spanish + Physics - (Math and Spanish) - (Math and Physics) - (Spanish and Physics) + (Math and Spanish and Physics)
So, the number of seniors who take Math and Spanish, but not Physics is:
Math and Spanish - (Math and Spanish and Physics) + (Math or Spanish or Physics - (Math + Spanish + Physics) + (Math and Spanish and Physics))
= 10 - 7 + (80 + 41 + 54 - 2(10) - 2(19) - 2(12) + 7)
= 3
Therefore, there are 3 seniors who take Math and Spanish, but not Physics.
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Some friends went out for a meal. The restaurant added a 10% service charge to the cost of the meal. The total bill was £126.50 including the service charge. What was the cost of the meal? Give your answer in pounds (£). Receipt Cost of the meal: £ Service charge: +10% Total: £126.50
Answer:
Let's start by setting up an equation to represent the problem. Let x be the cost of the meal:
x + 0.1x = 126.50
Simplifying the left side of the equation:
1.1x = 126.50
Dividing both sides by 1.1:
x = 115
Therefore, the cost of the meal was £115.
My little cousin needs help with this can anyone help please.
I’m busy with my tests and I don’t have the time to explain.
Answer:
I don't knowI am sorry I will let someone else answer
Step-by-step explanation:
Dylan has a pitcher with 1.65 L of orange juice. He pours out 0.2 L of the juice. Then he adds some sparkling water to the pitcher to make orangeade. He ends up with 1.9 L of orangeade. Solve the equation 1.65 - 0.2 + x= 1.9 to find the amount of sparkling water, x, Dylan adds to the pitcher.
please soon
edit nevermind I actually read the question and it's not that hard and I solved it so hehe
Answer:
Step-by-step explanation:
x= 0.45
Answer: 0.45 L of sparkling water
Step-by-step explanation:
1.65 - 0.2 = 1.45
1.9 - 1.45 = 0.45
0.45 L of sparkling water
my notes use implicit differentiation to find an equation of the tangent line to the curve at the given point.
The equation of the tangent line to the curve at the point (2,4) is y = (-1/2)x + 5.
To use implicit differentiation to find an equation of the tangent line to the curve at the given point (2,4), we need an implicit equation of the curve. Let's assume the curve is given by the equation:
x² + y² = 16
We can use implicit differentiation to find the slope of the tangent line at any point on this curve. Taking the derivative of both sides with respect to x, we get:
2x + 2y (dy/dx) = 0
Simplifying for (dy/dx), we get:
dy/dx = -x/y
Now we can substitute the given point (2,4) into this equation to find the slope of the tangent line at that point:
dy/dx = -2/4 = -1/2
So the slope of the tangent line at (2,4) is -1/2. We can use this slope and the point-slope form of the equation of a line to find an equation of the tangent line. The point-slope form is:
y - y1 = m(x - x1)
where m is the slope and (x1, y1) is the given point. Substituting the values, we get:
y - 4 = (-1/2)(x - 2)
Simplifying, we get:
y = (-1/2)x + 5
Therefore, the equation of the tangent line to the curve at the point (2,4) is y = (-1/2)x + 5.
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Complete question:
Use implicit differentiation to find an equation of the tangent line to the curve at the given point (2,4)
A shopkeeper pays a total of $570 to buy 300 identical items. The shopkeeper sells 200 of these items. The selling price of each of these items is such that the shopkeeper makes a profit of 20% on what he paid for each item.The shopkeeper then reduces this selling price by 25% and he sells the remaining 100 items at this reduced price.Calculate the total profit made by the shopkeeper in selling all 300 items.
Answer:
I HOPE ITS HELPFUL
Step-by-step explanation:
Cost price of 300 articles = ₹1500Hence cost of each item = 1500/300 = ₹5With 20% profit, selling price of each item = 5 * 120/100 = ₹6Hence, total selling price of 260 items = 260 * 6 = ₹1560Selling price of balance items = 6/2 = ₹3Total selling price for balance items = 40 * 3 = ₹120Total selling price = 1560 + 120 = ₹1680Profit gained = 1680 - 1500 = ₹180Profit percentage = 180/1500 * 100 = 12
what are the coordinates of point p on the directed line segment from a to b such that p is the length of the line segment from a to b?
the coordinates of point P are ((Ax + Bx) / 2, (Ay + By) / 2).
How to find?
If we want to find the coordinates of point P on the directed line segment from A to B such that P is the length of the line segment from A to B, we can use the following formula:
P = (1 - t)A + tB
where A and B are the coordinates of the two endpoints of the line segment, t is a scalar between 0 and 1, and P is the coordinates of the point we are trying to find.
When t = 1, we get the coordinates of point B, and when t = 0, we get the coordinates of point A. When t is between 0 and 1, we get a point on the line segment from A to B.
To find the point P that is the length of the line segment from A to B, we set t = 1/2, which gives us:
P = (1 - 1/2)A + (1/2)B
= (1/2)A + (1/2)B
So the coordinates of point P are the average of the coordinates of A and B:
Px = (Ax + Bx) / 2
Py = (Ay + By) / 2
where (Ax, Ay) and (Bx, By) are the coordinates of points A and B, respectively.
Therefore, the coordinates of point P are ((Ax + Bx) / 2, (Ay + By) / 2).
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Complete Question:
What are the Cartesian coordinates of point P on the directed line segment from point A to point B such that point P is located at a distance equal to the length of the line segment from point A to point B?
Please indicate which is the best answer to complete the figure below.
Answer:
Step-by-step explanation:
B because after having the star and the circle comes the square.
A class Eleventh Maths teacher Khushali wrote some sets in set builder form on a black board of class;A={x: xis a prime natural number and x is less than equal to 7 }
B ={y: y is an odd natural number and y E 7}
Where Universal set U = {l,2,3,4,5,6,7,8}
i)Write sets A and B in roster form
ii)Find A u B and A n B
iii)Find the number of all subsets of universal set U and number of relations from A to B
Step-by-step explanation:
i)
A = {2, 3, 5, 7}
as "1" can only be divided by one number (instead of the usual 2 numbers for prime numbers), if it's not part of that set.
out of U = {1, 2, 3, 4, 5, 6, 7, 8}
B = {1, 3, 5}
I am not sure what you mean by "y E 7".
I don't think you mean the E7 algebraic group.
I decided you mean y <> 7 (not equal to 7).
ii)
A u B (united) = {1, 2, 3, 5, 7}
A n B (elements in common) = {3, 5}
iii)
a set with n elements has 2^n subsets and (2^n) - 1 proper subsets (all subsets minus the equal one).
our U here has 8 elements, so the number of subsets is
2⁸ = 256.
the number of relations from A to B is 2^|A×B| = 2^(|A|·|B|).
|A| = 4
|B| = 3
so the number of relations from A to B are
2^(4×3) = 2¹² = 4096
remember, for the number of possible relations we have 4×3 = 12 possible combinations of elements of A and engender of B.
each of these combinations can be in the set of relations or not, which gives us 2 options per combination.
that gives us 2¹² relations.
Use the Chain Rule to find dz/dt. z = cos(x + 8y), x = 7t^5, y = 5/t
Answer:
We need to find dz/dt given:
z = cos(x + 8y), x = 7t^5, y = 5/t
Using the chain rule, we can find dz/dt by taking the derivative of z with respect to x and y, and then multiplying by the derivatives of x and y with respect to t:
dz/dt = dz/dx * dx/dt + dz/dy * dy/dt
First, let's find dz/dx and dz/dy:
dz/dx = -sin(x + 8y)
dz/dy = -8sin(x + 8y)
Now, let's find dx/dt and dy/dt:
dx/dt = 35t^4
dy/dt = -5/t^2
Substituting these values, we get:
dz/dt = (-sin(x + 8y)) * (35t^4) + (-8sin(x + 8y)) * (-5/t^2)
Simplifying this expression, we get:
dz/dt = -35t^4sin(x + 8y) + 40sin(x + 8y)/t^2
Substituting x and y, we get:
dz/dt = -35t^4sin(7t^5 + 40/t) + 40sin(7t^5 + 40/t)/t^2
Therefore, dz/dt is given by -35t^4sin(7t^5 + 40/t) + 40sin(7t^5 + 40/t)/t^2.
Two cellphone companies are offering different rate plans. Rogers is offering $19.99 per month, which includes a
maximum of 200 weekday minutes plus $0.35 for every minute above the maximum. TELUS is offering $39.99 for a
maximum 300 weekday minutes, but it charges $0.10 for every minute above the maximum. Above how many minutes
would TELUS be the better choice?
Use the partial quotients method to find 1032/32 division Upload a photo of your work
By using the partial quotients method 1032/32 = 32 R8.
What is expression?In mathematics, an expression is a combination of numbers, symbols, and operators that represents a mathematical quantity or relationship. It can be a single number, a variable, or a combination of both, and can also include mathematical operations such as addition, subtraction, multiplication, division, exponents, and roots. Expressions can be evaluated or simplified using mathematical rules and formulas.
According to the given information:Step 1: Estimate how many times 32 goes into 1032. It's helpful to find a multiple of 32 that is close to 1032. In this case, 32 x 30 = 960, which is less than 1032, and 32 x 31 = 992, which is greater than 1032. So we can estimate that 32 goes into 1032 around 30 to 31 times.
Step 2: Write 30 on top of a division symbol, and multiply 30 by 32. Write the result, 960, under 1032, and subtract.
30
-------
32|1032
960
------
72
Step 3: Write 72 next to the 30 on top of the division symbol. Then, add 72 to the partial quotient (30) to get 102. Write 102 under the partial difference (72) and bring down the next digit, which is 2.
30 72
-------
32|1032
960
------
72
64
------
8
step 4: Estimate again how many times 32 goes into the new partial difference, 82. Since 32 x 2 = 64 is less than 82 and 32 x 3 = 96 is greater than 82, we estimate 32 goes into 82 two to three times.
Step 5: Write 2 on top of the division symbol, and multiply 32 by 2. Write the result, 64, under 82, and subtract.
30 72 2
------------
32|1032
960
------
72
64
------
8
tep 6: Write 2 next to the 30 and 72 on top of the division symbol, and add 2 to the partial quotient to get 32. Write 32 under the partial difference and bring down the next digit, which is 0.
30 72 2
------------
32|1032
960
------
72
64
------
8
0
Step 7: Since there are no more digits to bring down, we have the final answer. The quotient is 32 with a remainder of 8. Therefore, 1032 divided by 32 is equal to 32 with a remainder of 8.
Therefore, by using the partial quotients method 1032/32 = 32 R8 .
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Mr. Brown's Thrift Shop
Quarter of 2012 Profit (in dollars)
1 $9,841.28
2 $8,957.67
3 $7,429.84
4 $11,095.67
How much total profit did Mr. Brown's store earn in the third and fourth quarters?
A.
$17,298.45
B.
$17,548.65
C.
$18,124.78
D.
$18,525.51
The correct option is D. $18,525.51. is the total profit made in the third as well as fourth quarters by Mr. Brown's store.
Explain about addition?In math, addition is the process of adding two or more integers together. The numbers having added are known as addends, while the outcome of the addition process, or the final response, is known as the sum. It is among the most fundamental mathematical operations we employ on a daily basis.
Quarterly profit for Mr. Brown's Goodwill Store in 2012 (in dollars)
1 $9,841.28
2 $8,957.67
3 $7,429.84
4 $11,095.67
Total profit = profit of 3rd quarter + profit of 4th quarter
Total profit = $7,429.84 + $11,095.67
Total profit = $18,525.51.
Thus, $18,525.51. is the total profit made in the third as well as fourth quarters by Mr. Brown's store.
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A random sample of 10 subjects have weights with a standard deviation of 12.3194
kg. What is the variance of their weights?
Answer: The variance of a sample of size n can be calculated using the formula:
variance = (sum of squared deviations from the mean) / (n - 1)
where the deviation from the mean is the difference between each individual value and the sample mean, and the sum of squared deviations is the sum of the squares of these differences.
However, we don't have the individual weights or the sample mean, only the standard deviation. We can use a related formula that expresses the standard deviation in terms of the variance:
standard deviation = sqrt(variance)
Solving for variance, we get:
variance = (standard deviation)^2
Plugging in the given standard deviation of 12.3194 kg, we get:
variance = (12.3194 kg)^2 = 151.8992 kg^2
Therefore, the variance of the weights of the 10 subjects is 151.8992 kg^2.
Step-by-step explanation:
Find g. Write your answer as a whole number or a decimal. Do not round.
The value of length of side g using the similar triangles is found as 20 ft.
Explain about the similar triangles?Triangles that are similar to one another in terms of shape, angle measurements, and proportion are said to be similar.If the single difference between two triangles is their size and perhaps the requirement to rotate or flip one of them, then they are similar.In the given figures:
DC || EA
So,
∠D = ∠A
∠C = ∠E
By Angle -Angle similarity both triangles are similar.
Thus,
Taking the ratios of their side, it will be also equal.
EA / DC = EB / BC
5 / 10 = g / 10
g = 10*10 / 5
g = 100 / 5
g = 20
Thus, the value of length of side g using the similar triangles is found as 20 ft.
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When two unequal forces act on an object, it causes the object to move.
These forces are called:
Answer:
resultant force
Step-by-step explanation:
the body will move to the direction where greater force is applied
(10
points
)
Let
S(t)= 1+e −t
1
. (a) Find
S ′
(t)
. (b) Which of the following equations hold true? Show why your choice is true. [Note: only one equation is true.] i.
S ′
(t)=S(t)
ii.
S ′
(t)=(S(t)) 2
iii.
S ′
(t)=S(t)(1−S(t))
iv.
S ′
(t)=−S(−t)
The derivative of S(t)= 1+e −t is S'(t) = S(t)(1 - S(t)). So, the correct answer is (iii).
To find S'(t), we can use the chain rule:
S'(t) = (d/dt) [1 + e^(-t/2)]^-2 * d/dt [1 + e^(-t/2)]
Using the chain rule again for the second derivative:
d/dt [1 + e^(-t/2)] = (-1/2)e^(-t/2)
d/dt [1 + e^(-t/2)]^-2 = -2(1 + e^(-t/2))^-3 * (-1/2)e^(-t/2) = (1/2) e^(-t/2) / (1 + e^(-t/2))^3
Substituting into the expression for S'(t), we have:
S'(t) = [(1/2) e^(-t/2) / (1 + e^(-t/2))^3] * [1 - (1/2)e^(-t/2)]
S'(t) = (1/2) e^(-t/2) / (1 + e^(-t/2))^3 * [2 - e^(-t/2)]
S'(t) = e^(-t/2) / (1 + e^(-t/2))^3 * [2 - e^(-t/2)]
Taking the derivative of S(t), we have:
S'(t) = e^(-t/2) / (1 + e^(-t/2))^2
Comparing this to the given choices, we can see that:
S'(t) = S(t) is not true, since S(t) = 1 + e^(-t/2) and S'(t) is a different function.
S'(t) = (S(t))^2 is not true, since (S(t))^2 = (1 + e^(-t/2))^2 is a different function from S'(t).
S'(t) = S(t)(1 - S(t)) is true, since we can substitute S(t) and S'(t) from above and simplify:
S'(t) = e^(-t/2) / (1 + e^(-t/2))^3 * [2 - e^(-t/2)]
S(t)(1 - S(t)) = [1 + e^(-t/2)] * [1 - (1 + e^(-t/2))] = e^(-t/2) / (1 + e^(-t/2))
Therefore, S'(t) = S(t)(1 - S(t)) is true.
S'(t) = -S(-t) is not true, since S(-t) = 1 + e^(t/2) and -S(-t) is a different function from S'(t).
So the correct choice is (iii): S'(t) = S(t)(1 - S(t)).
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