3 years ago

I need some help with this please

Mathematics

1 answer:

dem82 [27]3 years ago

5 0

What is the question

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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

Pavlova-9 [17]

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>

4 0

3 years ago

Help me pls i will make u a brinliest

olya-2409 [2.1K]

Answer:871

1)560;

2)800

3)871

6 0

3 years ago

Read 2 more answers

Having trouble with proving Lines Parallel on this page. Help?

snow_tiger [21]

For #1. Step 1: Set the equations equal to one another: (3x + 20) = (2x + 40)

Step 2: Subtract 2x on both sides of the equal sign: (3x-2x + 20) = (2x-2x + 40)

x + 20=40

Step 3: Subtract 20 on both sides of the equal sign: x + 20-20= 40-20

x=20

Step 4: plug in 20 for x: 3(20) + 20= 80 & 2(20) + 40= 80