Answer:
$16.8
Step-by-step explanation:
put 20% into decimal form 20/100 = 0.2
0.2 x 21 = $4.2
21-4.2 = $16.8
The Discount will be "$4.2" and the Sale price will be "$16.8".
According to the question,
Labeled case of toilet paper,
$21Get discount,
20%or,
0.2Now,
→ 20% of $21 will be:
= [tex]0.2\times 21[/tex]
= [tex]4.2[/tex] ($) (Discount)
→ The sale price will be:
= [tex]Labeled \ case - Discount[/tex]
By substituting the values, we get
= [tex]21-4.2[/tex]
= [tex]16.8[/tex] ($)
Thus the above approach is right.
Learn more:
https://brainly.com/question/11672774
Simplify 5 xa x 5 x a
Answer:
25 x 3 a 2
Step-by-step explanation:
Help pls help pls help.
B. 448 square meters
Step-by-step explanation:
I cut it into two rectangles
12cm by 4 cm for the first rectangle = 48cm
22cm by 8 cm for the second = 176cm
add areas together = 224cm
convert to meters = 448 square meters
hope this helps comment for more
Solve the equation.
q − 11 = 16
Answer:
q = 27
Step-by-step explanation:
Answer: 27
Step-by-step explanation: 16+11=27
Need help with this question
Answer:
Step-by-step explanation:
EB = 1.25×BC
x+5 = 1.25(x+1)
x+5 = 1.25x + 1.25
3.75 = 0.25x
x = 15
A model rocket is launched directly upward at a speed of 20 meters per second from the ground. The function f(t)=−4.9t2+20t, models the relationship between the height of the rocket and the time after launch, t, in seconds. When, in seconds after launch, will the rocket reach its highest point? Round to two decimal places.
Answer:
The rocket will reach its highest point about 2.04 seconds.
Step-by-step explanation:
The function:
[tex]f(t)=-4.9t^2+20t[/tex]
Models the relationship between the height of the rocket and the time after launch t in seconds.
Since this is a quadratic function, the rocket will reach its highest point at its vertex. The vertex of a quadratic is given by:
[tex]\displaystyle \Big(-\frac{b}{2a}, f\Big(-\frac{b}{2a}\Big)\Big)[/tex]
In this case, a = -4.9, b = 20, and c = 0. Thus:
[tex]\displaystyle t=\frac{-(20)}{2(-4.9)}=\frac{10}{4.9}\approx 2.04[/tex]
The rocket reaches its maximum height after 10/4.9 or about 2.04 seconds.
Further Notes:
Then the maximum height of the rocket will be f(10/4.9):
[tex]\displaystyle f\Big(\frac{10}{4.9}\Big)=-4.9\Big(\frac{10}{4.9}\Big)^2+20\Big(\frac{10}{4.9}\Big)\approx20.41\text{ feet}[/tex]
Which of the following represents
this number in scientific notation?
-0.904
A. 9.04 • 10^-1
B. -9.04 • 10^1
C. -9.04 • 10^-1
D. -9.04 • 10^-3
Answer:
The correct option is (c).
Step-by-step explanation:
The given number is -0.904.
We need to represent the number in scientific notation.
Any number can be written in scientific notation as follows :
[tex]a\times 10^b[/tex]
Where
a is a real number and b is an integer
We can write it as follows :
[tex]-0.904=-9.04\times 10^{-1}[/tex]
Hence, the correct option is (c).
A production manager is interested in comparing the precision of two brands of stamping machines. From a random sample of 12 units of output from the Brand A machine, a standard deviation of 15.2 is reported for a quality characteristic. For the Brand B machine, in a sample of 20 units of output, there is a standard deviation of 10.1. Is there sufficient evidence at the 5% significance level to conclude that Brand B machines have a lower variance in quality
Answer:
There is insufficient statistical evidence at 5% significant level to conclude that Brand B machines have a lower variance in quality
Step-by-step explanation:
The given parameters are;
The number of units of the sample from Brand A, n₁ = 12 units
The standard deviation of the quality characteristic of Brand A, s₁ = 15.2
The number of units of the sample from Brand A, n₂ = 20 units
The standard deviation of the quality characteristic of Brand B, s₂ = 10.1
The null Hypothesis; H₀; s₁² = s₂²
The alternative Hypothesis; H₀; s₂²< s₁²
The difference of two variance formula;
The F test statistic is given as follows;
[tex]F = \dfrac{S_1^2}{S_2^2}[/tex]
Where;
S₁² = The variance of sample (1) = 15.2² = 231.04
S₂² = The variance sample (2) = 10.1² = 102.01
df₁ = n₁ -1 = 12 - 1 = 11
df₂ = n₂ - 1 = 20 - 1 = 19
From the F table, we have the critical value from the F table = 2.66
[tex]F = \dfrac{S_1^2}{S_2^2} = \dfrac{231.04}{102.01} \approx 2.265[/tex]
Therefore, given that F ≈ 2.265 is not larger than the critical F for α = 0.05, we do not reject the null hypothesis, and there is sufficient statistical evidence at 5% significance level to conclude that Brand B machines have the same variance in quality as Brand A machines
Hannah does push-ups in sets of three she did 10 sets of push-ups today then her coach asked her to do 15 more push-ups how many push-ups did Juana do today
Answer:
30+ 15 =45
Step-by-step explanation:
(3×10)+15 =45
A rectangular poster is 27 inches wide and 42 inches long. Which is the best estimate for the are of the poster in square inches?
Answer: hi how are you i
Answer:
30 inches wide by 40 inches long
Step-by-step explanation:
27 inches rounds up to 30 inches and 42 inches rounds down to 40 inches
Navy’s Works At A Cell phone Store Monday To friday . She Earns $80 Per day plus $8 per Phone Sold . On tuesday , Nayva Makes at least $176 . Which Number Line Could be used to show the number of phones Navya Sold By The end Of her Shift On Tuesday
Answer Choices
Answer:
D.
Step-by-step explanation:
If She earns 80$ PER day + 8$ per phone sold and makes AT LEAST 176$ on Tuesday, You need to figure out how many phones she has sold by Tuesday.
Okay so now you need to set up your problem.
8x + 80 ≥ 176
Take away the 80, then take 80 from 176.
176 - 80 = 96
96 ÷ 8
x ≥ 12
Please help me with this! Picture is provided and only answer is you know it!
Answer:
Option A
Step-by-step explanation:
Number of components assembled by the new employee per day,
N(t) = [tex]\frac{50t}{t+4}[/tex]
Number of components assembled by the experienced employee per day,
E(t) = [tex]\frac{70t}{t+3}[/tex]
Difference in number of components assembled per day by experienced ane new employee
D(t)= E(t) - N(t)
D(t) = [tex]\frac{70t}{t+3}-\frac{50t}{t+4}[/tex]
= [tex]\frac{70t(t+4)-50t(t+3)}{(t+3)(t+4)}[/tex]
= [tex]\frac{70t^2+280t-50t^2-150t}{(t+3)(t+4)}[/tex]
= [tex]\frac{20t^2+130t}{(t+3)(t+4)}[/tex]
= [tex]\frac{10t(2t+13)}{(t+4)(t+3)}[/tex]
Therefore, Option A will be the answer.
The probability that a seed will germinate is 0.65. Find the probability that a seed selected at a random will not germinate. *
Answer:
0.35 or 35%
Step-by-step explanation:
The probability that any seed will germinate is said to be 0.65 (or 65%) in the question. This means that the remaining percentage is the probability that the randomly selected seed will not germinate. This is because there is only two possible outcomes to that given scenario, which is it will germinate or not. Meaning that the remaining percentage/probability is that it will not germinate
1 - 0.65 = 0.35 or 35%
The world’s fastest flying insect is the dragonfly. It can fly 36 miles per hour. If a dragonfly flew in a straight path at this rate, what distance would it fly in 15 minutes? (1 hour = 60 minutes) *
In NOP, the measure of ZP=90°, the measure of ZN=7°, and NO = 3.4 feet.
Find the length of OP to the nearest tenth of a foot.
Can someone please solve this
Answer this page: BIG REWARD GRANTED
Answer:
there seems to be no page ...
Can a triangle have three acute angles? Justify your answer
HELP PLSS I BEG plss
Answer:
Answer for 3:
its 6/2 and 3/1 because 6/2 simplified is 3 and 3/1 is 3
Step-by-step explanation:
Answer for 4
box one 1/4
box 2 4/10
box 3 3/4
Which expression is equivalent to the expression below?
g + g+g+g+g+g
Answer:
6 x g
Step-by-step explanation:
Answer:
[tex]g^{6}[/tex]
Step-by-step explanation:
The equation below describes a parabola. If a is negative, which way does the parabola open? x = ay^2?
A. Left
B. Up
C. Right
D. Down
The parabola x = ay^2 opens (a) left, if a is negative
How to interpret the parabola?The equation of the parabola is given as:
x = ay^2
From the question, we understand that a is negative
This means that
a < 0
When a is negative, then the parabola opens to the left
Hence, the parabola opens (a) left
Read more about parabolas at:
https://brainly.com/question/1480401
HELP PLEASE IT'S DUE
Answer:
1) no solution
2) no solution
Step-by-step explanation:
7(2 + 5v) = 3v +14
14 + 35v = 3v + 14
The 14s cancel each other out.
35v ≠ 3v
no solution
36 - 7p = -7(p - 5)
36 - 7p = -7p + 35
The -7s cancel each other out.
36 ≠ 35
no solution
5th grade math. correct answer will be marked brainliest.
Answer:
(1,23) , (2,28) , (3,32) , (4,35)
Step-by-step explanation:
Just match the X value with its corresponding Y value
5 in = ___________ ft
Answer:
0.416667 foot
Step-by-step explanation:
Answer: 0.41666667
Step-by-step explanation:
From the internet
A farmer collects 8 bushels of apples. Each bushel contains 126 apples. If she sells 2 and 1/2 bushels to a local store, how many apples does she have left?
Please help!
Answer:
693 apples
Step-by-step explanation:
126 x 8 = 1,008
1,008 - 126 (1 bushel) = 882
1,008 - 126 (another bushel) = 756
126/2 = 63
756 - 63 (1/2 bushel) = 693
sorry, the correct answer is 693 apples left
Mason wants to host a housewarming party. The following equation represents how the cost of party depends on the number of attendees.
The equation is d= 16a
The variable \mathrm{a}a represents the number of attendees, and the variable d represents the cost in dollars.
Find the number of attendees who could be invited if Mason budgets a total of $80 for his party.
HEEEELPPPPPPPPP Which properties describe the graph of (x + 5)2 + (y – 10)2 < 169?
Answer:
circle with center at (–5, 10), shading inside the circle
Step-by-step explanation:
edge2021
Answer:
A. circle with center at (–5, 10), shading inside the circle
please help me with roots
Answer and Step-by-step explanation:
There aren't any real roots.
This is because the equation isn't factorable. You would have to use the quadratic formula to find the roots, which would be imaginary roots, and not real roots.
#teamtrees #PAW (Plant And Water)
Given the following formula, solve for n. S = (n − 2)180
answers
A) n=5/180-2
B) n=5/180+2
C) n=5-2/180
D)n=5+2/180
Answer: B
Step-by-step explanation:
Solve the equation.
h-3.5 =9h−3.5=9
i am a legend
dont ask i am just a lengnd
The value of h in the equation h - 3.5 = 9 is 12.5.
Mathematically, an equation is a statement that asserts the equivalency of two expressions. It consists of two hands, the left-hand side( LHS) and the right-hand side( RHS), separated by an equal sign( =). The LHS and RHS can be numbers, variables, constants, or further complex fine expressions.
Equations can be classified based on their degree, which corresponds to the highest power of the variables involved. For example, linear equations have a degree of 1, quadratic equations have a degree of 2, and so on.
Given that
h - 3.5 = 9,
Add 3.5 on both sides,
h - 3.5 + 3.5 = 9 + 3.5,
h = 12.5.
So, the value of h is 12.5.
Learn more about Equations here:
https://brainly.com/question/28953876
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The complete question is as follows:
Solve the following equation for h:
h-3.5 =9
determine the scale factor
Answer:
The scale factor is (2/3)
Step-by-step explanation:
[tex]9 \times \frac{2}{3} = 6 \\ 12 \times \frac{2}{3} = 8[/tex]
I hope that is useful for you :)