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3 years ago

Help!!! I will give brainliest.

Mathematics

1 answer:

iVinArrow [24]3 years ago

7 0

4x - 4y = -36
3x + 4y = 8
7x = -28
/7 /7
x = -4

-4 - y = -9
+4 +4
-y = -5
/-1 /-1
y = 5

(-4 , 5)

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3 years ago

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4 years ago

Hat is the solution to the equation 3/3(4c + 16)=2c+9 ?<br><br> c =

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If it is $\frac{3}{3(4c+16)}$ =2c+9, go to AAAAAA
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$\frac{3}{3(4c+16)}$ =2c+9
$\frac{1}{4c+16}$ =2c+9
times 4c+16 to both sides
1=(2c+9)(4c+16)
distribute
1=8c^2+68c+144
minus 1 both sides
0=8c^2+68c+143
use quadratic formula
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(3/3)(4c+16)=2c+9
1(4c+16)=2c+9
4c+16=2c+9
minus 2c both sides
2c+16=9
minus 16 both sides
2c=-7
divide both sides by 2
c=-7/2
c=-3.5

if it is $\frac{3}{3(4c+16)}$ =2c+9,
c= $\frac{-17- \sqrt{3} }{4}$ or $\frac{-17+ \sqrt{3} }{4}$

if it is ( $\frac{3}{3}$ )(4c+16)=2c+9, c=-3.5

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