Ask question

Ask question

All categories

2 years ago

13

One thousand students took a test resulting in a normal distribution of the scores with a mean of 80 and a standard deviation of

5. How many students scored between 70 and 90

1 answer:

zavuch27 [327]2 years ago

5 0

63 I believe is the answer

You might be interested in

Charra [1.4K]

Answer:

$FH=73$

Step-by-step explanation:

We are given that a segment FH and G is the midpoint of FH.

FH= $14x-4$

$FG=5x+9$

We have to find the measure of FH.

When G is the midpoint of segment FH

Then , FG=GH

$FH=FG+GH$

Segment addition property

$14x-4=FG+FG$

Substitution property

$14x-4=2FG$

$14x-4=2(5x+9)$

$14x-4=10x+18$

$14x-10x=18+4$

$4x=22$

$x=\frac{22}{4}=5.5$

Substitute the values then we get

$FG=5(5.5)+9=36.5$

$FG=GH=36.5$

$FH=14(5.5)-4=73$

8 0

3 years ago

What is the value of x?

ser-zykov [4K]

Answer:

C

24Step-by-step explanation:

Trust me on this one.

4 0

3 years ago

2/5 of a number is what percantage of that number

iragen [17]

Answer:

40% of that number

8 0

4 years ago

Read 2 more answers

Piper has a points card for a movie theater. she receives 60 rewards points just for signing up. she earns 13.5 points for each

Arisa [49]

Answer:

10

Step-by-step explanation:

I first took away 60 from 195, as she already had 60 points. Than we were left with 135 points and since she gets 13.5 points every time she visits, I divided 135 by 13, which gives us 10.

3 0

2 years ago

PLEASE ANSWER FAST! WILL GIVE BRAINLIEST!

NemiM [27]

Answer:

Step-by-step explanation:

You need to find the area of each of the shapes by multiplying the length by the width. Then, you need to add them all together. I won't do it for you because it will make it harder to learn stuff in the future but I told you the formula!!

8 0

2 years ago