3 years ago

7. Find the value of the direct squared variation y = 12x2 if x = 3. A. 1,296 B. 432 C. 108 D. 36

Mathematics

1 answer:

mojhsa [17]3 years ago

6 0

Y=12x^2
y=12(3)^2
y=12*9
y=108
Therefore, the answer is C.

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Answer:

Equation: $\frac{3}{4}n+8=n-20$

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Step-by-step explanation:

To first set up the equation, you need to look at the verbal description and translate into numbers and operations:

'three fourths a number' = $\frac{3}{4} n$

'plus 8' = + 8

'is' =

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'the number' = n

Put the expressions together:

'three fourths a number plus 8': $\frac{3}{4}n+8$

'20 less than the number': n - 20

Set them equal to each other and solve: $\frac{3}{4}n+8=n-20$

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Multiply both sides by $\frac{4}{1}$ : $\frac{4}{1}28=\frac{1}{4}n\frac{4}{1}$

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