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3 years ago

What is the inverse of function f?

Mathematics

1 answer:

kari74 [83]3 years ago

5 0

9514 1404 393

Answer:

D. f^-1(x) = 3 -7x

Step-by-step explanation:

Solve x = f(y) for y to find the inverse function.

x = f(y)

x = (3 -y)/7 . . . . . . use the function definition

7x = 3 -y . . . . . . . .multiply by 7

y = 3 -7x . . . . . . . add y-7x to both sides

Then the inverse function is ...

$\boxed{f^{-1}(x)=3-7x}$

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the earth rotates about its axis once every 23 hours, 56 minutes and 4 seconds. Approximate the number of radians the earth rota

marishachu [46]

Answer:

$\frac{\pi}{43082}\text{ radians per second}$

Step-by-step explanation:

Given,

Time taken in one rotation of earth = 23 hours, 56 minutes and 4 seconds.

Since, 1 minute = 60 seconds and 1 hour = 3600 seconds,

⇒ Time taken in one rotation of earth = (23 × 3600 + 56 × 60 + 4) seconds

= 86164 seconds,

Now, the number of radians in one rotation = 2π,

That is, 86164 seconds = 2π radians

$\implies 1\text{ second }=\frac{2\pi}{86164}=\frac{\pi}{43082}\text{ radians}$

Hence, the number of radians in one second is $\frac{\pi}{43082}$

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3 years ago

Nineteen students were invited to michelle's party. Three more boys than girls were invited. How many boys were invited?

bekas [8.4K]

11 boys and 8 girls because you divide it in half the add 2 and subtract 1. That isn't the wy you are supposed to do it but it works and makes since in my head.

7 0

4 years ago

Read 2 more answers

X^2+2x-8=0 in simplest radical form

madreJ [45]

2⃣, -4⃣ = x; no radical necessary.

6 0

3 years ago

HELP ME IM TERRIBLE AT THIS

OLEGan [10]

Answer:

a. $14.50

b. $43.5

Step-by-step explanation:

a. $7.00 + $7.50 = $14.50

b. y = 14.5x x=3

y = $14.5 x 3 = $43.5

8 0

3 years ago

oliver is training for a marathon. In practice, he runs 15 kilometers in 72 minutes. What is the speed in kilometers per hour?

34kurt

72/15=4.8
4.8 is the answer

8 0

4 years ago