Answer:
this is confused me so much is it supposed to be a trick or is that a actual question-
Answer:
Unit rate: 21feet / 7seconds = 3 feet per second.
3 feet per second * 5 seconds = 15 feet
21 feet + 15 feet =36 feet
You are 36 feet from the surface.
Step-by-step explanation:
Answer:
5 inches is <u>5</u> times as big as 1 inch
Answer:
The 80% confidence interval for the population proportion of tenth graders reading at or below the eighth grade level is (0.149, 0.207).
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 zscore that has a pvalue of
.
Suppose a sample of 292 tenth graders is drawn. Of the students sampled, 240 read above the eighth grade level.
So 292 - 240 = 52 read below or at eight grade level, and that 
80% confidence level
So
, z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:

The upper limit of this interval is:

The 80% confidence interval for the population proportion of tenth graders reading at or below the eighth grade level is (0.149, 0.207).
Answer:
12 feet.
Step-by-step explanation:
h= -(2)^2+8(2)
h= -4+16
h= 12