2 years ago

A set of scores with a normal distribution has a mean of 50 and a

1 answer:

4 0

36, 43, 50, 57, 64

36 and 64 are two standard deviations out, so the empirical rule tells us 95% of scores will fall here with a normal distribution

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I really need the answers for these I don't understand this

Yuri [45]

I tryed my best to figure out what all of the numbers were. if i got any wrong then please tell me and i will put the right answer in the comments.

1) 3/5= 5/x (cross multiply)
3x=5(5)
3x=25
x= 25/3 -or- 8.33

2) 2/4=x/12 (cross multiply)
 2(12)=4x
 24=4x
 6=x
3) 10/x=5/9 (cross multiply)
10(9)=5x
90=5x
18=x
4) 5/5=x/18 (cross multiply)
5(18)=18x
90=18x
5=x

8 0

2 years ago

2. Jack and Tim are racing remote-controlled cars. Jack's car travels 3.5 feet per

gregori [183]

D. 3.55s - 10 < 5.25s

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2 years ago

Which inequality is best represented by the graph? Picture down below

pshichka [43]

Answer: D

Step-by-step explanation:

When you convert the equation to y-intercept form it becomes y > $\frac{1}{2}$ x +3 and the sign is > because the line is dotted and the shaded portion is above the graph.