The height is 14 cm.
A=bh/2
42=6h/2
42(2/6)=h
(42÷6)x2=h
7x2=h
h=14
The third one just like the previous question
Answer:
Step-by-step explanation:
One
EH = FG
<F = <H
Two
1. DB divides AC into two right angles: BDA and BDC
2. <ABD = CBD
Answer: B. This student's test grade was 2.4 standard deviations above the mean test grade.
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Explanation:
The z score tells us how far away the raw score is from the mean. This distance is in terms of standard deviations.
- z = 1 means we're 1 standard deviation above the mean
- z = 2 means we're 2 standard deviations above the mean
and so on.
Negative z scores indicate the raw score is below the mean.
- z = -1 means we're 1 standard deviation below the mean
- z = -2 means we're 2 standard deviations below the mean
and so on. So that's why z = 2.4 indicates the students test grade was 2.4 standard deviations above the mean.