3 years ago

What is _- 20 - 3 1/4 = 14 5/8

Mathematics

1 answer:

dem82 [27]3 years ago

4 0

Answer:

x=303/8

Step-by-step explanation: Yes, I know it looks weird but this is what my calculations have told me. I plugged that number back into the equation and it works so it should be correct unless I misread your question.

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luda_lava [24]

Answer:

64in

Step-by-step explanation:

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3 years ago

The product of 9 and the sum of three times a number and 8 is 180. What is the number?

Nataliya [291]

9(3n + 8) = 180
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4 0

3 years ago

If f(x) = 4(3x - 5), find f-1(x)

deff fn [24]

Answer:

$f^{-1}(x) = \frac{1}{12}(x+20)$

Step-by-step explanation:

Given: f(x) = 4(3x - 5)

Is required to find f⁻¹(x)

f(x) = y = 4(3x - 5)

∴ y = 4 * 3x - 4 * 5

∴ y = 12x - 20 ⇒ add 20 to both sides

∴ y + 20 = 12x ⇒ divide both sides by 12

∴ $\frac{1}{12} (y+20) = x$

Replace the places of x and y.

∴ $y=\frac{1}{12} (x+20)$

∴ $f^{-1}(x) = \frac{1}{12}(x+20)$

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3 years ago