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Sonja [21]
3 years ago
9

I have to find the value of x​

Mathematics
1 answer:
Debora [2.8K]3 years ago
4 0

Answer:

x = 10

Step-by-step explanation:

To find x, write a proportion between the side lengths for the similar triangles in the figure.

\frac{x+5}{x}=\frac{18}{12}

To solve, cross multiply and isolate x.

(x+5)(12) = 18(x)

12x + 60 = 18x

60 = 6x

10 = x

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7 0
3 years ago
Evaluate f(x) = 4x + 3x^2 − 5 when x = -2.<br> 23<br><br><br> -1<br><br><br> -25<br><br><br> -49
frozen [14]

Answer:

f(-2) = -1

Step-by-step explanation:

One way of doing this is to substitute -2 for x in every place where x shows up:

f(x) = 4x + 3x^2 − 5  →  f(-2) = 4(-2) + 3(-2)^2 − 5  

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5 0
3 years ago
I'm confused how to solve this, can someone help??
frutty [35]
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6 0
3 years ago
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Simplify the expression 4(6x)
xxMikexx [17]
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3 years ago
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Dennis_Churaev [7]

Answer:

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3 years ago
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