Answer:
x+5
Step-by-step explanation:
Answer:
They need to survey 4145 residents.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence level of
, we have the following confidence interval of proportions.

In which
z is the z-score that has a p-value of
.
The margin of error is given by:

99% confidence level
So
, z is the value of Z that has a p-value of
, so
.
At least how many residents do they need to survey if they want to be at least 99% confident that the sample proportion is within 0.02 of the true proportion?
This is n for which
. As we have no estimate for the proportion, we use
. So






Rounding up:
They need to survey 4145 residents.
This distance can be computed by use of a formula; the distance fallen after a time of t seconds is given by the formula. where g is the acceleration of gravity (9.8 m/s/s on Earth). Since there is no information given aside from time, we'll use this formula d = 0.5gt^2<span>
</span> d = 0.5gt^2
d = 0.5 (9.8) (2.3^2)
d = 25.921 m convert to feet (1 m = 3.28084ft) = 85.0426509 = 85.043 feet
Answer:
B. x = 62 because 147 – 85 = 62 and 85 + 62 = 147
Step-by-step explanation:
We are given that

Exterior angle=
We have to find the value of x.
We know that
Exterior angle=Sum of opposite interior angles of triangle
Using the property

Subtract 85 from both sides we get


Option B is true.
B. x = 62 because 147 – 85 = 62 and 85 + 62 = 147
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