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Angelina_Jolie [31]

3 years ago

5

Which function has an inverse function?

2 answers:

denis23 [38]3 years ago

7 0

<span>Example 5: If f(x) = 2x – 5, find the inverse. This function passes the Horizontal Line Test which means it is a onetoone function that has an inverse. y = 2x – 5 Change f(x) to y. x = 2y – 5 Switch x and y. Solve for y by adding 5 to each side and then dividing each side by 2.</span>

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murzikaleks [220]3 years ago

3 0

The inverse of (x+5)/5 ===>5x - 5

the inverse of x^5-3 ===>(x+3)^(1/5)

the inverse of x^4/7+27===>to solve it need to know if it's (x^4)/7 or x^(4/7)

the inverse of 1/x^2====> 1/(√x)

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4 years ago

You are researching the average emails received per day. You want to know how many employees you should survey if you want to kn

IrinaK [193]

Answer:

The value is $n =29 \ employees$

Step-by-step explanation:

Generally the number of employee to survey(sample size) is mathematically represented as

$n = [ \frac{z * \sigma }{E} ]^2$

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5 0

4 years ago

After Marshall's alarm went off, he spent 3/4 hr getting ready for school. He walked 1/6 hr to the bus stop, waited 1/12 hr, rod

natka813 [3]

Answer:

7:15 am

Step-by-step explanation:

1. Add the times together by finding a common denominator

3/4 = 9/12

1/6 = 2/12

1/12 = 1/12

1/4 = 3/12

9/12 + 2/12 + 1/12 + 3/12 = 15/12

It took him 15/12 of an hour in total.

2. Convert to hours

15/12 = 1 3/12

3/12 = 1/4

1/4 of an hour is 15 minutes.

I took him a total of 1 hour and 15 minutes.

3. Subtract 1 hour and 15 minutes from 8:30

8:30 - 1:15 = 7:15

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3 years ago