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Yuliya22 [10]
3 years ago
10

Assume the random variable X is normally distributed, with mean 45 and standard deviation is 8. Find the 9th percentile

Mathematics
1 answer:
Maksim231197 [3]3 years ago
5 0

Answer:

the 9th percentile, i dont even know the first percentile

Step-by-step explanation:

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5 + 2n2 when n = 3. <br><br> (The 2 after the n is an exponent)
Pani-rosa [81]

Answer:

23

Step-by-step explanation:

5 0
3 years ago
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Please answer numbers 32 and 33! Please show work and explain your answer!
mrs_skeptik [129]
12.
Add like terms from both trinomials:

4x^{2} + -2x^{2} = 2x^{2}
2x + -5x = -3x
-1 + 3 = 2

Combine these terms to get a new trinomial as your answer:

2x^{2} - 3x + 2


13. 
Subtract like terms from both trinomials (note that subtracting a negative is the same as adding it as a positive):

3x^{2} - 5x^{2} = -2x^{2}
-8x - -11x = -8x + 11x = 3x
-1 - -1 = -1 + 1 = 0

0 can be left out of the answer.

Combine these terms to get a binomial as your answer:

-2x^{2} + 3x
3 0
3 years ago
10) The second angle in a triangle is 3° less than twice the first angle. The third angle measure 8° more than
andre [41]

Answer:

35, 67 and 78

Step-by-step explanation:

the angles are:

n, 2n-3 and 2n+8

there are 180 degrees in a triangle, so adding those terms together will give us 180

5n + 5 = 180

180 - 5 = 175

5n = 175

175 / 5 = 35

n = 35

now we have n we can put it in to the formula we have for the angles at the start:

n = 35

2n - 3 = 67

2n + 8 = 78

so the angles are

35, 67 and 78

8 0
3 years ago
Jim’s football team started a play on the 50 yard line. On the first play, the team had a 7-yard gain. On the second play, they
lawyer [7]

This is a basic addition/subtraction question. It's saying that they started at the 50 yard line. On the play, they gained 7 yards. So, we'll add 50+7 = 57.

They're at the 57 yard line at this point. On the second play they lost 10 yards (how unfortunate). Thereby, we will subtract 57-10=47.

50 yards +7 yards. -10 yards.

The answer will be that they'll be on the 47 yard line on the next play.

5 0
3 years ago
Read 2 more answers
A cone-shaped paper drinking cup is to be made to hold 33 cm3 of water. find the height and radius of the cup that will use the
alekssr [168]
The height and radius that will give us the smallest amount of paper, should have should have the perfect dimension, in that the diameter should be equal to the height. thus let the diameter be x, the height will be x and the radius will be x/2
thus the volume of the cone will be:
V=1/3πr^2h
=1/3*π*(x/2)^2*x
=0.262x^3
hence the value of x will be:
33=0.262x^3
x^3=125.95
x=(125.95)^(1/3)
x=5.0126=5.01 cm
thus the diameter=height=5.01cm
6 0
3 years ago
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