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Rzqust [24]
3 years ago
6

He distribution of scores on the sat is approximately normal with a mean of m = 500 and a standard deviation of sd = 100. for th

e population of students have taken the sat. (c) what is the minimum sat score needed to be in the highest 10% of the population?
Mathematics
1 answer:
Pavlova-9 [17]3 years ago
4 0
A<span>. What proportion have SAT scores greater than 700? Z= 2 ; 2.28%
B. What proportion have SAT scores greater than 500? 50%
C. What is the minimum SAT score needed to be in the highest
10% of the population? Z= 1.28; 628
D. If the state college only accepts students from the top 60% of the SAT distribution, what is the minimum SAT score needed to be accepted? Z= .26; 474</span><span> </span>
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Please help me!!!! I need to hand it in rn!!
Maurinko [17]

Answer:

12

Step-by-step explanation:

no \: of \: side \: of \: polygon \\  =  \frac{360 \degree}{ measure \: of \: exterior \: angle}  \\  \\  =  \frac{360 \degree}{ 30 \degree} \\  \\  = 12

8 0
4 years ago
PLEASE HELP
marta [7]
Let's begin by putting together some equations:

Seth has charges $39 and then $13 per hour. Since "hour" is our variable, let's write that as $13h where h = the number of hours.

Seth = 39 + 13h, $39 plus $13 times the number of hours

Malcolm charges $55 and then $11 per hour. So:

Malcolm = 55 + 11h, $55 plus $11 times the number of hours

Our goal is to find out how many hours both have to work before they charge the same amount. So let's set our Seth and Malcolm equations equal to one another.

39 + 13h = 55 + 11h, because we want to solve for h to see the number of hours.

First let's subtract 39 from each side:

(39 + 13h) - 39 = (55 + 11h) - 39
13h = 16 + 11h

Now let's subtract 11h from each side:

(13h) - 11h = (16 + 11h) - 11h
2h = 16

Simplify and solve for h by dividing each side by two:

(2h)/2 = (16)/2
h = 8

So Malcolm and Seth would have to work for 8 hours before both earn the same amount. After 8 hours, Seth would earn more than Malcolm. Before 8 hours, Malcolm would earn more than Seth.
3 0
4 years ago
Solve for b and simplify your answer. 10=2/3 b​
MrMuchimi

Answer:

b=15

Step-by-step explanation:

2/3b=10

3×2/3b=10×3

2b=30

÷2. ÷2

b=15

7 0
3 years ago
5 (3y-4) and 15y -20 equivalent or not equivalent
kiruha [24]

Answer:

The  answer and step by step explanation is in the picture below. Thank you! :)

Step-by-step explanation:

5 0
3 years ago
Simplify the expression<br> 4a<br> 6(a + b)<br> Enter the correct answer.<br> Someone help plz
shutvik [7]

Answer:

4 7 + 4 6

Explanation:

4 0
3 years ago
Read 2 more answers
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