3 years ago

100 is the sum of 25 and Num

Mathematics

1 answer:

Slav-nsk [51]3 years ago

7 0

Algebraic expression: 100 = 25 + n

Answer: n = 75

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8$ in tax will be paid

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Lucy wants to be exempt from her semester exam. In order for that to happen, she has to average an 85 over 3 test grades. Her fi

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Answer:

<em>Grades to be scored in 3rd exam = 88</em>

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$Average = \dfrac{Sum\ of\ numbers}{Total\ count\ of\ numbers}$

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3 years ago

Please help! Given the function problem

dedylja [7]

Answer:

Step-by-step explanation:

So we have the function:

$f(x)=\frac{9}{5}x+32$

To find the inverse, flip f(x) and x, change f(x) to f⁻¹(x), and solve for it. Thus:

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Subtract 32 from both sides:

$x-32=\frac{9}{5}f^{-1}(x)$

Multiply both sides by 5/9. The right side will cancel. Thus:

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Our answer is B.

And we're done!

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