21n + 7
Combine like terms.
n, 7n, 7n, 3n, and 3n are all like terms. These can be added together as 21n.
7 is the only term by itself.
Put these together to get 21n + 7.
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Answer:
Your 3 answers are
- A) y=0.25x
- C) Graph
- E) Table
Step-by-step explanation:
If you were to graph them and compare the original graph they are exactly the same.
A) y=0.25x is the same thing as y= 1/4 * x
slope m is 1/4 on the original graph and given decimal form.
C) Is the same graph but the point given is at (4,1)
E) is the points between 6<x<8 and 1.5<y<2 as the original graph.
Answer:
We must survey at least 48 people from this younger age group.
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 .
The margin of error is:
90% confidence level
So , z is the value of Z that has a pvalue of , so .
How many of this younger age group must we survey in order to estimate the proportion of non-grads to within .10 with 90% confidence? Use the value of p from the over-50 age group.
This is n when
So
Rouding up,
We must survey at least 48 people from this younger age group.
9514 1404 393
Answer:
C = 56.52 in
A = 256.34 in²
Step-by-step explanation:
The figure is trying to show you that d=18 in, so r=9 in. The formulas for C and A are given, so you only need to put the numbers in the formula and do the arithmetic. Apparently, you're supposed to use 3.14 for π.
C = πd = (3.14)(18 in) = 56.52 in
A = πr² = (3.14)(9 in)² = (3.14)(81) in² = 254.34 in²
Answer:1/3
Step-by-step explanation:
5/15