How many solutions does this system have?
->
2x-3y = 10
-4x+6y=-20
one
two
an infinite number
no solution
Answer: I think there is only one
Step-by-step explanation:
Answer:
an infinite number
Step-by-step explanation:
Let's solve for y for both equations.
[tex]2x-3y=10\\-3y=10-2x\\y=\frac{2}{3}x-\frac{10}{3}[/tex]
[tex]-4x+6y=-20\\6y=4x-20\\y=\frac{4}{6} x-\frac{20}{6}[/tex]
By reducing fractions we get:
[tex]y=\frac{2}{3}x- \frac{10}{3}[/tex]
These two equations are EXACTLY the same.
Therefore, this system has an infinite number amount of solutions.
Using desmos graphing calculator, you can't see both lines because they're exactly the same line.
this stuff is kinda hard please help me find the answer
Answer: 1 is D and 2 is B I think
Step-by-step explanation: 1 is D because 59.2 + (-84.7) because D is the same thing as 59.2-84.7, just written differently. 2 is B because the longer line resembles -15 and the smaller line resembles 6. -9 is circled because its supposed to add up to -9, hence why it would be 6+(-15)=-9. Hope this helped :)
Individual bottles of water are filled by a machine at a factory with an amount of water that is approximately normal with a mean of 505\,\text{mL}505mL505, start text, m, L, end text and a standard deviation of 10\,\text{mL}10mL10, start text, m, L, end text. A random sample of 161616 bottles is selected for a quality inspection. What is the probability that the mean amount of water in these 161616 bottles \bar x x ˉ x, with, \bar, on top is within 5\,\text{mL}5mL5, start text, m, L, end text of the population mean?
Answer:
P(500< xˉ <510)≈0.95
Step-by-step explanation:
Khan Academy
PLEASE HELP ME BRAINLIEST WILL BE GIVEN!!
This is an example of a random sample: Marley surveys her swim teammates about their favorite sport.
True
False
Answer:
False
Step-by-step explanation:
The people arent random
Rosie bought 1 2/5 pounds of cantaloupe. She also bought watermelons that were 3 1/3 times the weight of the cantaloupes. How much did the watermelons weigh?
Answer:
4 2/3 pounds of watermelon.
--
I hope this helped you!
The national weather service reports the daily temperature in degrees
Fahrenheit. The scientific community reports temperature in degrees Celsius.
The formula F = 1.8C + 32 relates Celsius, C, to Fahrenheit F Solve the formula
for C.
Answer:
[tex]C =\frac{5}{9}(F - 32)[/tex]
Step-by-step explanation:
Given
[tex]F = 1.8C + 32[/tex]
Required
Solve for C
[tex]F = 1.8C + 32[/tex]
Subtract 32 from both sides
[tex]F-32 = 1.8C + 32-32[/tex]
[tex]F-32 = 1.8C[/tex]
Divide both sides by 1.8
[tex]\frac{1}{1.8}(F - 32) = C[/tex]
Express the decimal as fraction
[tex]\frac{1}{18/10}(F - 32) = C[/tex]
[tex]\frac{10}{18}(F - 32) = C[/tex]
Simplify
[tex]\frac{5}{9}(F - 32) = C[/tex]
[tex]C =\frac{5}{9}(F - 32)[/tex]
Riley bought 50 foot or rope. He cut off pieces that total 34’8” so far. How much rope does he have left
Answer:
the answer is 15'2" of the rope that is left
Step-by-step explanation:
Can you please help me
no xdxdxdxdxdxxdxdxdxdxdxdxdxdxddxd
help with number 5 please
Answer:
60
Step-by-step explanation:
A circle has radius 29.5 cm. What is the diameter?
Answer:
59cm
Step-by-step explanation:
Juhi sells a washing machine for Rs 13500. She loses 20% in the bargain . What was the price at which she bought it
➽ Let the cost price of the washing machine be a variable and apply the condition that the loss Juhi faced was 20% of the cost price, i.e., Rs. 13,500 is 80% of the cost price to form an equation. Solve the equation to get the answer.
Solution :➽ The selling price of the washing machine after bargain = Rs 13, 500
➽ percentage of loss she had in the bargain = 20 %
let the price paid by juhi be x
➽ Now interpreting the statement in the question
in mathematical form we get :
[tex] \implies[/tex] loss = Rs 2 / 10 × 2
[tex] \implies[/tex] Loss = Rs 2 / 10 × x
➽ According to the simple marketing norm, if we subtract the loss from the buying price, we will be getting the selling price for which Juhi sold the washing machine.
Profit / loss = purchasing price - Selling price
Substituting the values the above equation, we get;
[tex] \implies[/tex] 2 x / 10 = x - 13500
[tex] \implies[/tex] 2 x / 10 = x - 13500 / 2
On cross-multiplication, we get;
2 x = 10 ( x - 13500 )
[tex] \implies[/tex] 2 x = 10 x - 13500
[tex] \implies[/tex] 8 x = 13500
∴ x = 13500 / 8 = 16875
∴ Hence the price that Juhi paid for buying the Washing machine was Rs. 16,875.Additional information :
❑ Don’t get confused and take the 20% of the selling price while you solve, as you should be very clear that the percentage loss or profit are terms related to the actual pricing not to the price for which you crack the deal. The other way of thinking of this is that the selling price might vary from buyer to buyer depending on the bargain they put in, but the percentage should be defined from a fixed mark so that you can easily handle it. The reason that most products in the market have an MRP tag on it making it easier for all the sellers to handle their margins.
PLSSS HELP Due in 5 mins!!!
Answer:
a 15
b 42
c 12
trust me
What’s the meaning of elimination in English?
[tex] \huge \sf \ \star \purple{Answer} \star[/tex]
the act, process, or an instance of eliminating or discharging: such as. a : the act of discharging or excreting waste products from the body
the act, process, or an instance of eliminating or discharging: such as. a : the act of discharging or excreting waste products from the body.
orElimination is the process of getting rid of something, whether it's waste, errors, or the competition. Elimination comes from the Latin word limen, which means threshold. The Romans added an “e” to the beginning and created the verb eliminare, which means to banish or to push over the threshold and out the door.
[tex] \huge{ \bf \color{red}{hope \: it \: helps}}[/tex]
If a translation maps zl onto ZK, which of the following statements is true? G HS 1 K НІ is twice the measure of 2JK: GH is twice the measure of 2GJ: Triangles AGHI and AGJK are not similar. OCH = J
9514 1404 393
Answer:
(d) ∠H ≅ ∠J
Step-by-step explanation:
We already know that ∠G is congruent to itself. If we show (by translation or other means) that ∠I ≅ ∠K, then we know that ΔGHI ~ ΔGJK. The third angle in each triangle will be congruent, too.
∠H ≅ ∠J
_____
The problem is concerned with angles, so the first two answer choices are irrelevant. If two angles are shown congruent, the triangles are congruent by AA similarity, so the third answer choice is incorrect.
Answer: D
Step-by-step explanation:
dy/dx=2xy/x²+y² solve
Answer:
[tex]y=\frac{-1}{2} \sqrt[]{4x^2+4c_{1}^2} -c_{1}\ or \ \frac{1}{2} \sqrt[]{4x^2+4c_{1}^2} -c_{1}[/tex]
Step-by-step explanation:
As it is first order nonlinear ordinary differential equation
Let y(x) = x v(x)
2xy/(x²+y²)=2v/(v^2+1)
dy=xdv+vdx
dy/dx=d(dv/dx)+v
x(dv/dx)+v=(2v)/(v^2+1)
dv/dx=[(2v)/(v^2+1)-v]/x
[tex]\frac{dv}{dx}=\frac{-(v^2-1)v}{x(v^2+1)}[/tex]
[tex]\frac{v^2+1}{(v^2-1)v}dv=\frac{-1}{x}dx[/tex]
∫[tex]\frac{v^2+1}{(v^2-1)v}dv[/tex] = ∫[tex]\frac{-1}{x}dx[/tex]u=v^2
du=2vdv
Left hand side:
∫[tex]\frac{v^2+1}{v(v^2-1)}dv[/tex]
=∫[tex]\frac{u+1}{2u(u-1)}du[/tex]
=[tex]\frac{1}{2}[/tex]∫[tex](\frac{2}{u-1} -\frac{1}{u} )du[/tex]
=[tex]ln(u-1)-\frac{ln(u)}{2} +c[/tex]
=[tex]ln(v^2-1)-\frac{ln(v^2)}{2}+c[/tex]
Right hand side:
[tex]=-ln(x)[/tex]
Solve for v:
[tex]v=-\frac{-c_{1}+\sqrt{c_{2}+4x^2 } }{2x} \ or \ \frac{-c_{1}+\sqrt{c_{2}+4x^2 } }{2x}\\[/tex]
[tex]y=\frac{-1}{2} \sqrt[]{4x^2+4c_{1}^2} -c_{1}\ or \ \frac{1}{2} \sqrt[]{4x^2+4c_{1}^2} -c_{1}[/tex]
What is the radius of a circular lid with a diameter of 5 centimeters?
radius
Answer:
5/2 =
2.5
Step-by-step explanation:
What is the slope of the line that passes through the points
(-16, -5) & (-15, -7)
Answer:
slope=-2
Step-by-step explanation:
Okay so we just take those coordinates and apply them to this formula:
y2-y1/x2-1
then simplify to get -2
if you want me to elaborate just say the word
Marco bounces a basketball 45 times in 60 seconds.at the rate approximately how many times will Marco bounce the ball 150 seconds?
Answer:
Approximately : 135
Step-by-step explanation:
60sec x 3 = 180sec
45 x 3 = 135
Can some please help and if you get it right I will mark Brainly!!!
Answer:
(2, 7)
Step-by-step explanation:
bc if you plug in the points into the equation you get 3(2)+4(7) is greater or equal to 20. 3(2)+4(7) is 34 and that is greater than 20
A triangle has side lengths of 13 cm and 6 cm. Which could be the value of the third side, 21 cm or 17 cm?
Answer:
No
FDSAdsadasdsadaaaaaaaaaaaaaaa
leeeeeeeeetttt'ssssssssss gooooooo gurl get your groov
Answer:
yaaa groooov
Step-by-step explanation:
x-8= -12 what is x in the equation
Answer:
-4
Step-by-step explanation:
Answer:
x = -4
Step-by-step explanation:
Isolate the variable x
x - 8 = -12
To isolate the variable, add 8 to both sides (this cancels the 8 out on the left side)
x - 8 + 8 = -12 + 8
x + 0 = -4
x = -4
Sarah makes small purses (x) and big purses (y). She can make no more than 8 purses a week. Which inequality represents the situation?
The inequality that represents this situation is x + y ≤ 8
Inequalities shows the non equal comparison between numbers or expressions.
Let x represent the number of small purses and y represent the number of big purses.
Given that She can make no more than 8 purses a week, hence:
x + y ≤ 8
The inequality that represents this situation is x + y ≤ 8
Find out more at: https://brainly.com/question/25285332
8,626 round to the nearest thousand?
Answer:
9000
Step-by-step explanation:
Jayden has $10 in a savings account. The interest rate is 5%, compounded annually.
To the nearest cent, how much interest will he earn in 2 years?
$
Submit
Answer:
$1
Step-by-step explanation:
First, converting R percent to r a decimal
r = R/100 = 5%/100 = 0.05 per year,
then, solving our equation
I = 10 × 0.05 × 2 = 1
I = $ 1.00
The simple interest accumulated
on a principal of $ 10.00
at a rate of 5% per year
for 2 years is $ 1.00.
can somebody help me?
Answer:
1 and 2
Step-by-step explanation:
PROCESSING BASE ANGLES
OF AN ISOSCELES TRIANGLE
Answer:
m<A = 69°
m<C = 69°
Step-by-step explanation:
From the question given above, the following data were obtained:
AB = AC
m<B = 42°
m<A =?
m<C =?
Since:
AB = AC
Therefore,
m<A = m<C
A + B + C = 180 (sum of angles in a triangle)
C + 42 + C = 180
Collect like terms
C + C = 180 – 42
2C = 138
Divide both side by 2
C = 138 / 2
C = 69°
Finally, we shall determine m<A. This can be obtained as follow:
m<A = m<C
m<C = 69°
Therefore,
m<A = 69°
James had a large bag of raisins. He ate
3/4
of it. Then, he shared the rest of the raisins with 2 friends and himself (3 people in total). What portion of the whole bag of raisins did each of his friends get? Choose the numbers to complete the fraction?
Choose...
Choose...
PLEASE HELP ASAP
Answer:
1/12
Step-by-step explanation:
3/4=9/12
12/12-9/12=3/12
(3/12)/3=1/12
Answer:
The friend both get 1/12
Step-by-step explanation:
Hope this helps!
Given a function described as the graph below, what is y when x is 3?
WHERE IS THE GRAPH. there needs to be a graph to answer the question
Answer:6
Step-by-step explanation:
Uop
2/4 of Zaria's hair bows are pink, 1/4 are purple, and the rest are orange. What fraction of Zaria's hair bows are orange?