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3 years ago

13

6x - 3y = 15 x + 3y = -8 Complete the description for three different substitution methods that can be used to solve this system

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1 answer:

PolarNik [594]3 years ago

5 0

Answer:

x 2 − y = 2 , 2 x − y = − 1

x + y = 3 , 2 x − 8 y = 19

x + 2 y = 4 , x − y = − 3

Step-by-step explanation:

HOPE IT HELPS

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4 years ago

Read 2 more answers

Solve for j.<br> j/-2+7=-12<br> j=

tangare [24]

J/-2 + 7 = -12 multiply both sides with 2

-j + 14 = -24 move -14 to the other side and change sign

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4 years ago

The area of a circle varies directly as the square of its radius. A circle with radius 2 in. Has area 12.568 in.^2 . What is the

Dafna11 [192]

Answer:

$A_2=128.69\ in^2$

Step-by-step explanation:

The area of a circle varies directly as the square of its radius.

$A=\pi r^2$

If r₁ = 2in, A₁ = 12.568 in₂, r₂ = 6.4 in, A₂ = ?

ATQ,

$\dfrac{A_1}{A_2}=\dfrac{r_1^2}{r_2^2}\\\\A_2=\dfrac{A_1r_2^2}{r_1^2}\\\\A_2=\dfrac{12.568 \times 6.4^2}{2^2}\\\\=128.69\ in^2$

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3 years ago

Find the area for 5 and 6 and please explain the steps

nydimaria [60]

For number 5, the area is 195
because Area = Base x Height
so 13 x 15 = 195

I don’t know number 6 yet

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3 years ago

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ehidna [41]

Answer:

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Step-by-step explanation:

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3 years ago