2 years ago

PLEASE HELP I GIVE BRAINLIEST

Mathematics

1 answer:

Galina-37 [17]2 years ago

4 0

I Think it would either be D or C

(I’m not sure, let me know if I’m wrong)

You might be interested in

Length times width is the formula for what quadrilateral?

Zarrin [17]

Answer:

area of rectangle and square

7 0

2 years ago

Scores from an exam are normally distributed with a mean of 85 and a standard deviation of 5. Suppose 188 students take the exam

charle [14.2K]

The mean is $\mu=85$ and standard deviation is $\sigma=5$ . Then the variable $X\sim N(85,5)$ .

Use substitution $Z=\dfrac{X-\mu}{\sigma}=\dfrac{X-85}{5}$ , then the variable $Z\sim N(0,1)$ .

The probability $Pr(X>80)$ can be calculated in the following way:

for X=80, $Z=\dfrac{80-85}{5} =-1$ and $Pr(X>80)=Pr(Z>-1)$ . From the diagram $Pr(Z>-1)=0.34+0.34+0.135+0.025=0.84$ .

Conclusion: if 188 students take the exam, then 188·0.84=157.92 (157) would receive a score above 80

4 0

3 years ago

Read 2 more answers

Select whether each equation has no solution, one solution, or infinitely many solutions. No Solution One Solution Infinitely Ma

Lyrx [107]

Answer:

Step-by-step explanation:

7x + 14 = 14 x + 7

-7x = -7

x = 1 (one solution)

~~~~~~~~~~~~~~~~~

5 x + 8 = 8 + 5 x

0 =0 (infinite solutions)

~~~~~~~~~~~~~~~~

9x = 9 x + 5 17

0 = 517 (no solution)

7 0

2 years ago

Can i have help soon please?

zavuch27 [327]

M<1 = 1/2(b-d)

answer is C. third choice

3 0

3 years ago

Neal used magnetic letters to spell the word communication on his file cabinet. One of the magnets fell on the floor. What is th

Nataliya [291]

Answer:

the likehood that an n fell on the floor is 2 in 13.

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers