3 years ago

1) 4x + 3y = -13-5x + 2y = -24

1 answer:

6 0

(4x+3y=-13) * 2
(-5x+2y=-24)*3
_____________
8x+6y=-26
-
-15x+6y=-72
___________
23x=46
X=2

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Marina CMI [18]

If that’s the right equation... hopefully this helps

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3 years ago

S_A_V [24]

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yes what is it

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3 years ago

Anvisha [2.4K]

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I think its B and D

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3 years ago

dybincka [34]

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X must be negative

because the answer is x=-8

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3 years ago

kirill115 [55]

We can use the arc length formula to solve this.

Arc length = $\frac{q}{360}*2\pi r$

Given arc length is 7 and radius is 5, we can plug in the values and solve for q.

$7=\frac{q}{360}*2\pi (5)\\7=\frac{q}{360}*10\pi \\7=\frac{10\pi q}{360}\\7=\frac{\pi q}{36}\\7*36=\pi q\\252=\pi q\\q=\frac{252}{\pi}\\q=80.21$

ANSWER:

We can use the equation $7=\frac{q}{360}*2\pi (5)$ to find the value of q. And, the value of q is 80.21°.

3 0

3 years ago

1) 4x + 3y = -13-5x + 2y = -24​