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Elena-2011 [213]

3 years ago

5

HELP ! I have math soon

1 answer:

frosja888 [35]3 years ago

6 0

X=12 or 12+x or x+12 let me know if that gave u a idea and helped thanks

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Nuetrik [128]

the answer are b,d and e....

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2 years ago

The temperature at 10 A.M is 12 degrees Fahrenheit. The temperature at 6:00 A.M. was -7 degrees Fahrenheit. How many degrees did

scoundrel [369]

12 degrees Fahrenheit

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2 years ago

Read 2 more answers

Please help with this. 13 points and brainly PLEASE

Katyanochek1 [597]

Answer:

100 im pretty sure because 10 x 10 = 100

7 0

2 years ago

felice bought 3/4 of a pound of american cheese at the dell she used 1/2 of the cheese to make sandwhiches how much cheese did s

andrew11 [14]

She used 2/4 pou.ds of cheese, or 8 ounces, or just a half-pound.

3 0

3 years ago

The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes

mixer [17]

Answer:

0.02275

Step-by-step explanation:

We have been given that the time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. We are asked to find the probability of completing the exam in one hour or less.

We know that 1 hour equals 60 minutes. First of all, we will find the z-score corresponding to 60 minutes.

$z=\frac{x-\mu}{\sigma}$

z = z-score,

x = Sample score,

$\mu$ = Mean,

$\sigma$ = Standard deviation.

$z=\frac{60-80}{10}$

$z=\frac{-20}{10}$

$z=-2$

Now, we will use normal distribution table to find area under z-score of $-2$ as:

$P(z< -2)$

$P(z< -2)=0.02275$

Therefore, the probability of completing the exam in one hour or less is 0.02275.

7 0

2 years ago