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GrogVix [38]
3 years ago
13

Plez help with math!!

Mathematics
1 answer:
ruslelena [56]3 years ago
8 0
I don’t know I really don’t know, I am very confused ahhhhhhh!
You might be interested in
The commuting time for a student to travel from home to a college campus is normally distributed with a mean of 30 minutes and a
Rainbow [258]

Answer:

0.1587

Step-by-step explanation:

Let X be the commuting time for the student. We know that X\sim N(30, (5)^2). Then, the normal probability density function for the random variable X is given by

f(x) = \frac{1}{\sqrt{2\pi(5)^{2}}}\exp[-\frac{(x-\mu)^{2}}{2(5)^{2}}]. We are seeking the probability P(X>35) because the student leaves home at 8:25 A.M., we want to know the probability that the student will arrive at the college campus later than 9 A.M. and between 8:25 A.M. and 9 A.M. there are 35 minutes of difference. So,

 

P(X>35) = \int\limits_{35}^{\infty}f(x)dx = 0.1587

To find this probability you can use either a table from a book or a programming language. We have used the R statistical programming language an the instruction pnorm(35, mean = 30, sd = 5, lower.tail = F)

6 0
3 years ago
Hey guys! Can you simplify this? Be sure to show your work so i know you aren't guessing! Also remember when you answer a questi
Svetlanka [38]

Answer:

x≤−11

Step-by-step explanation:

−99≥18x−9x

−99≥9x

−

​9

​

​99

​​ ≥x

−11≥x

x≤−11

5 0
2 years ago
PLEASE HELP 40 POINTS
irinina [24]
(A) The value of x is 90 degrees. (B) The angle is a right angle.
5 0
3 years ago
On Monday, Mrs. Smith drove 3.56 miles to go to the grocery store, 5.9 miles to go to the bank, and 12.087 miles to go out to di
Yuki888 [10]

Answer:

22

Step-by-step explanation:

3.56 = 4

5.9 = 6

12.087 = 12

4+6+12 = 22

6 0
3 years ago
If a single one of these can be answered, can someone help me? I put my book somewhere. I’ll mark brainliest to actual answers :
Alisiya [41]
16. Anaerobic means Without oxygen
5 0
2 years ago
Read 2 more answers
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