MATHEMATICS MIDDLE SCHOOL

Solve the system of equations.{y=x−6
{3x+2y=8

Use the substitution method.

Answers

Answer 1
Answer: the answer is y=-2 and x=4 ,,, tell me if you need the work

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- 8x-10y=20
-8x - 6y=-4

Answers

Answer:

x=5 y =-6

Step-by-step explanation:

- 8x-10y=20

-8x - 6y=-4

Multiply the first equation by -1

8x +10y=-20

Add this to the second equation

8x +10y=-20

-8x - 6y=-4

------------------

      4y = -24

Divide each side by 4

4y/4 = -24/4

y = -6

Now we need to solve for x

8x +10(-6) = -20

8x -60 = -20

Add 60 to each side

8x -60+60 = -20+60

8x = 40

Divide each side by 8

8x/8 = 40/8

x =5

Two numbers with the sum of -19 and product of 48

Answers


-16  and  -3  will do that job.

What's the simplest form of 28/49, 96/144, 40/45

Answers

4/7 for the 1st one., 8/9 for he 3rd dunno about middle one soz
28/49 = 4/7 
96/144= 2/3
40/45= 8/9

The lengths of three line segments are 4 centimeters, 5 centimeters, and 9 centimeters.Using this information, how many triangles can be constructed.

Answers

I m pretty sure it's 1

Answer:

none

Step-by-step explanation:

The vertices of a right triangle are (6, 2), (–2, –4), and (–2, y). What is the value of y?



A.
–4


B.
–2


C.
2


D.
4

Answers

It switches 2, -4, 2
so it should be?

Two stores sell the same computer for the same original price. Store A advertises that the computer is on sale for 25% off the original price. Store B advertises that it is reducing the computer’s price by $180. When Brittany compares the sale prices of the computer in both stores, she concludes that the sale prices are equal.Which equation models this situation?


Let p represent the computer’s original price.

A. 0.25p = p – 180
B. 0.75p = p + 180
C. 0.25(p – 180) = p
D. 0.75p = p − 180

Answers

We are required to find equation which compare the price of computer in both stores.

The equation that represents the expression is 0.75p = p - 180 and the value of the computer's original price is $720

Let

p = the computer’s original price.

Store A = 25% off the original price.

= p - (25% of p)

= p - (25/100 × p)

= p - (0.25 × p)

= p - 0.25p

= 0.75p

Store B = p - 180

The equation:

Store A = store B

0.75p = p - 180

0.75p - p = -180

-0.25p = -180

divide both sides by -0.25

p = -180 / -0.25

p = $720

Read more:

brainly.com/question/1815531

Answer:

d

Step-by-step explanation:
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