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3 years ago

Variance is_________.

Mathematics

1 answer:

katrin [286]3 years ago

3 0

Answer:

Step-by-step explanation:

Variance can be said to be a measure of dispersion for a random sample.

Variance = pq/n

When given the variance, we can find the standard deviation.

Standard deviation = √variance

= √pq/n

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What’s is the radius of a circle with a area of 3.21 square feet

Rus_ich [418]

approx 1 foot

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2 years ago

Write an equation for the translation of y = |x|. 6 units down A.y = |x| + 6 B.y = |x| – 6 C. y – 6 = |x| D.y = |–6x|

MrRa [10]

I believe it is B, because going down would be negative, and it is subtracting 6.

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3 years ago

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Solve the word problem.

Natasha2012 [34]

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3 years ago

A cell phone tower that is 150 ft tall sits on a mountain that

aliina [53]

Answer:

angle of elevation will be $2.14^o.$

Step-by-step explanation:

Given,

height of tower = 150 ft

height of tower = 1200 ft

So, total height of peak of tower = 1200 + 150

= 1350 ft

distance of user from cell tower = 5 miles

= 5 x 5280 feet

= 26,400 feet

Since the height of user from sea level = 400 ft

so, height of peak of tower with respect to user = 1350 - 400 ft

= 950 ft

If the angle of depression is assumed as $\theta$ , then we can write

$tan\theta\ =\ \dfrac{\textrm{height of peak of tower w.r.t user}}{\textrm{distance of user from tower}}$

$=>\ tan\theta\ =\ \dfrac{950}{26400}$

$=>\ tan\theta\ =\ 0.374$

$=>\ \theta\ =\ 2.14^o$

So, the angle of elevation will be $2.14^o.$

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2 years ago

What is the fifth term of a sequence whose first term is 5 and whose common ratio is 3?

Deffense [45]

<span>a=first term
r=common ratio
n=the term
a(5)=5*3(5-1)
a(5)=5*81
a(5)=405
The answer is B)</span>

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3 years ago

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