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Anton [14]
3 years ago
6

40pts! Find the value of X

Mathematics
2 answers:
Gelneren [198K]3 years ago
8 0

Answer:

x=9

Step-by-step explanation:

First, find divide 72/9 to get 8. Then divide 56 by 8 to get 7.

Solve the equation 7=3x-20. -->3x=27-->x=9.

Hope this helps!

mihalych1998 [28]3 years ago
3 0

i belive the answer is 10

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Answer:

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Step-by-step explanation:

If h(x) =4f(x)+3g(x), to find h(7) we can substitute the values of f(7) and g(7) and we get:

h(7)=4f(7)+3g(7)\\h(7)=4(5)+3(3)\\h(7)=20+9\\h(7)=29

To find the derivative, we know that the derivative of a sum of functions equals the sum of the derivatives of those functions.

This would mean that h'(x)=4f'(x)+3g'(x), we can substitute the values for f'(7) and g'(7)

h'(7)=4f'(7)+3g'(7)\\h'(7)=4(8)+3(4)\\h'(7)=32+12\\h'(7)=44

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3 years ago
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