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Brilliant_brown [7]

2 years ago

6

The ages of the 32 recruits in police academy are normally distributed with a mean of 27 with a standard deviation of 2. What pe

rcent of the recruits are between ages 23 and 27?

1 answer:

Natalka [10]2 years ago

8 0

Z scores are (age - mean) / std dev

= 23 - 27 / 2 = -2 and 27-27 / 2 = 0

Using the standard normal tables we find the required percentage is 47.73%

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Suppose that there are two types of tickets to a show: advance and same-day. The combined cost of one advance ticket and one sam

____ [38]

We can set up 2 equations given the information.
Let the price of advance ticket be represented by A and same day ticket by S

A + S = 50
20A + 40S = 1700

Solve for A in the first equation by subtracting S on both sides.
U will get A = 50 - S

Now substitute 50 - S for A in the second equation.

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6 0

3 years ago

What element in the domain has image 7 in the function f(x) = x²– 2?<br><br>a. 3 b) 9 c) -1 d) 4

blagie [28]

Here,

f(x) = 7

x = ?

Now,

f(x) = x^2 - 2

or, 7 = x^2 - 2

or, 7 + 2 = x^2

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a) 3

I hope it's help you...

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6 0

3 years ago

Read 2 more answers

How do I do this....?

ioda

Answer:

you plot the coordinates you have been given

Step-by-step explanation:

6 0

3 years ago

F equals to 2 f - 20

ICE Princess25 [194]

Answer:

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7 0

3 years ago

Rewrite as difference of squares (2x+5)(2x-5)

andre [41]

4x^2-25

I got u homie wherever in the world u r

4 0

2 years ago