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Given information
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Area = 40ft²
Length = √20 ft
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Formula
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Area = Length x Width
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Find Width
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40 = √20 x width
Width = 40 ÷ √20
Width = 40 ÷ 2√5
Width = 20 ÷ √5

The diameter is 12 cm and the radius is alsays half of the diameter so it will be 6 cm
Answer:
If a person is randomly selected from this group, the probability that they have both high blood pressure and high cholesterol is P=0.25.
Step-by-step explanation:
We can calculate the number of people from the sample that has both high blood pressure (HBP) and high cholesterol (HC) using this identity:

We can calculate the probability that a random person has both high blood pressure and high cholesterol as:

The correct answer is A.
The independent variable is time and the dependent variable is distance; this means the slope tells us how far she goes per minute. Since the slope is negative and we are referring to her distance from her house, this means the distance from her house is decreasing, which means she is getting closer to her house.
42% of what is 63
0.42x = 63
x = 63/0.42
x = 150...so there are 150 dancers in the school