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PolarNik [594]
3 years ago
13

The amount of jen's monthly phone bill is normally distributed with a mean of $65 and a standard deviation of 11. what percentag

e of her phone bills are between 32 and 98
Mathematics
1 answer:
stepan [7]3 years ago
4 0
It would be 99%. If you draw the normal distribution curve and plot the mean and standard deviation, it might help you visually.

:)



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Write the equation in vertext form<br><br> Vertex: (3,6) ; y-intercept: 2
olganol [36]
Y= a(x-3)^2+6
2= a(0-3)^2+6
2=a(-3)^2+6
2=a(9)+6
2-6=9a
-4=9a
-4/9=a

Therefore the equation in vertex form is
y = -4/9 (x-3)^2+6
8 0
3 years ago
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Juli2301 [7.4K]

Answer:

4/8

Step-by-step explanation:

8 is how many cookies in total and 4 is how many that needs to be distributed.

7 0
3 years ago
Suppose that a certain college class contains students. Of these, are juniors, are mathematics majors, and are neither. A studen
ipn [44]

Answer:

<h2>2/5</h2>

Step-by-step explanation:

The question is not correctly outlined, here is the correct question

<em>"Suppose that a certain college class contains 35 students. of these, 17 are juniors, 20 are mathematics majors, and 12 are neither. a student is selected at random from the class. (a) what is the probability that the student is both a junior and a mathematics majors?"</em>

Given data

Total students in class= 35 students

Suppose M is the set of juniors and N is the set of mathematics majors. There are 35 students in all, but 12 of them don't belong to either set, so

|M ∪ N|= 35-12= 23

|M∩N|=  |M|+N- |MUN|= 17+20-23

           =37-23=14

So the probability that a random student is both a junior and social science major is

=P(M∩N)= 14/35

=2/5

7 0
2 years ago
PLEASE I really need help
fredd [130]
I would say Jupiter but i may be wrong
6 0
3 years ago
Tom rode his horse for 4/6 mile. Liz rode her horse for and equal distance. what is an equivalent fraction that describes how fa
Tpy6a [65]
I saw the images that accompanied this problem. 

2 circles: circle 1 has 6 slices ; circle 2 has 3 slices

Circle 1 is for Tom: you can shade 4 slices out of the 6 slices.
Circle 2 is for Liz: you can shade 2 slices out of the 3 slices.

4/6 is equal to 2/3 because when 4 and 6 are both divided by 2, they give quotient of 2 and 3, respectively.

4 ÷ 2 = 2
6 ÷ 2 = 3
 
3 0
3 years ago
Read 2 more answers
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