Answer:
78.5%
Step-by-step explanation:
The area of the square is equal to diameter squared
i.e 4 in × 4 in = 16 square inches
The area of the circle is π × r²
i.e π × 2² = 12.56637061
The percent of the time the point will be in the circle = (Area of the circle) ÷ (Area of the square) × 100
i.e 
× 100 = 78.53981631%
And is equal to 78.5% (rounded up to the nearest tenth of a percent)
Answer: 
Step-by-step explanation:
An null hypothesis (
) is a statement of equality which shows that there is no statistical difference between the groups being tested.
An alternative hypothesis (
) is a statement of inequality which shows that there is statistical difference between the groups being tested.
Let 
be the population mean amount of garbage per bin .
Given : A sanitation supervisor is interested in testing to see if the mean amount of garbage per bin is different from 50.
i.e. 
→ Alternative
Thus , the appropriate null and alternative hypotheses :
In the case of a circle, the formula for area, A, is A = pi * r^2, where r is the circle's radius. Since we know that a semicircle is half of a circle, we can simply divide that equation by two to calculate the area of a semicircle. So, the formula for the area of a semicircle is A = pi * r^2/2
Answer:
-19
Step-by-step explanation:
3x+2 = -55
-2 -2
3x = -55-2
3x = -55+-2
3x = -57
/3 /3
x=-19
