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3 years ago

If f(x) = 5x + 4, which of the following is the inverse of Ax)?

Mathematics

1 answer:

Levart [38]3 years ago

6 0

Answer:

$f^{-1}$ (x) = $\frac{x-4}{5}$

Step-by-step explanation:

let y = f(x) and rearrange making x the subject, that is

y = 5x + 4 ( subtract 4 from both sides )

y - 4 = 5x ( divide both sides by 5 )

$\frac{y-4}{5}$ = x

change x to $f^{-1}$ (x) and y back to x, thus

$f^{-1}$ (x) = $\frac{x-4}{5}$

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Eva8 [605]

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3 years ago

Solve for b .<br> Simplify your answer as much as possible.<br> 40=25b

Anit [1.1K]

8/5
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3 0

2 years ago

I really need help with b I have already done a

marishachu [46]

Answer:

Step-by-step explanation:

In the first pattern, there were 6 sticks

In the second pattern, there were 10 sticks.

In the third pattern, there were 14 sticks.

Based on the pattern, we see that each time, 4 more sticks are added and that the initial amount of stick is 6.

Thus: the equation for how many sticks there would be in pattern n is:

# of sticks in pattern n = 6 + 4n

Hope that helps!

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2 years ago

Which of the following expressions are equivalent to 20t5⋅2−4t?

avanturin [10]

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3 years ago

Find the value of x. round the length to the nearest tenth

Ronch [10]

Answer:

777.9 meters

Step-by-step explanation:

Notice that the angles of the right triangle are 40 and 50 degrees, with the 500 meter side adjacent to the 50 degree angle. Now, we can set up an equation: cos (50 degrees) = 500 / x. Use a calculator to find that the answer is 777.9.

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3 years ago

Read 2 more answers