Answer:
16.69°
Step-by-step explanation:
Given that,
Height of the building, h = 60 foot
Distance from the base of the building, b = 60 foot
We need to find the angle of elevation must the plane takes off in order to avoid crashing into the building. So,

So, the required angle is 16.69°.
Answer:
(4,-2)
Step-by-step explanation:
Answer: Standard error.
Step-by-step explanation:
If the population is normally distributed , then the standard deviation of a sampling distribution of the sample mean
[/tex] is known as standard error which depends on population standard deviation
and the sample size (n).

It measure the variability in the sample statistics that happens by chance.
Thus, the standard deviation of a sampling distribution is called the <u>standard error</u>.
(5x-20) - median of a trapezoid <span>
</span>
2(5x-20) = 2x+6 + 4x+2
10x - 40 = 6x + 8
10x - 6x = 8 + 40
4x = 48
x = 48 : 4
x = 12
Answer:
18
Step-by-step explanation:
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