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IRINA_888 [86]
3 years ago
9

PLEASE HELP simple geometry problem

Mathematics
1 answer:
vlabodo [156]3 years ago
5 0

Perimeter is adding the 3 sides together. Since both triangles have the same perimeter set both triangles to equal:


(x+3 + x+3 + x+3) = (x+3 + 2x-3 + x)

Simplify each side:

3x+9 = 4x

Subtract 3x from each side:

x=9



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Steve had 7 more than twice as many quarters as dimes. if the total value of her coins was $10.15, how many of each kind of coin
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X=quarters, y=dimes
7+2x=y
0.25x+0.1y=10.15
we substitute the first equation into the second equation
0.25x+0.1(7+2x)=10.15
0.25x+0.7+0.2x=10.15
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0.45x=9.45
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x=21 quarters
7+2x=y, x=21
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y=49 dimes
check: 0.25x+0.1y=10.15 when x=21, y=49
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49(0.1)=4.90 in dimes 
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Answer:

See the explanation

Step-by-step explanation:

Given function

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Now in next part of question it ask us to check each ordered pair.

Let us plug each x value and y value in the function y=-3x-5

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we can see ordered pair (1,8),(-2,1)and(-1,-2) true for function y=-3x-5

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