Answer:
see explanation
Step-by-step explanation:
Given
, ![\frac{7a}{a^2+11a+28}](https://tex.z-dn.net/?f=%5Cfrac%7B7a%7D%7Ba%5E2%2B11a%2B28%7D)
Factor the denominators of both fractions
, ![\frac{7a}{(a+4)(a+7)}](https://tex.z-dn.net/?f=%5Cfrac%7B7a%7D%7B%28a%2B4%29%28a%2B7%29%7D)
The lowest common denominator of both fractions is (a + 4)(a + 5)(a + 7)
Multiply numerator/denominator of first fraction by (a + 7)
Multiply numerator/denominator of second fraction by (a + 5 )
,
, then
, ![\frac{7a^2+35a}{(a+4)(a+5)(a+7)}](https://tex.z-dn.net/?f=%5Cfrac%7B7a%5E2%2B35a%7D%7B%28a%2B4%29%28a%2B5%29%28a%2B7%29%7D)
Answer:
10% of 63 is 6.3 so 63+6.3=69.3
Step-by-step explanation:
Answer:
10.75
Step-by-step explanation:
To get the average, we always SUM UP all the numbers and divide by the number of numbers.
We do this for "change" row since we want average of "change".
Let's add up all the changes:
11 + 12 + 10 + 10 + 11 + 10 + 11 = 75
How many numbers are there?
There are 7 numbers
Now, the average:
Average = Sum/Number of Numbers
Average = ![\frac{75}{7}=10.75](https://tex.z-dn.net/?f=%5Cfrac%7B75%7D%7B7%7D%3D10.75)
The average = 10.75
Answer:
The answer to the given problem is given below.
Step-by-step explanation:
What values do p, q,n,E and p represents?
The value of p is the sample proportion.
The value of q is found from evaluating 1− p.
The value of n is the sample size.
The value of E is the margin of error.
The value of p is the population proportion.
If the confidence level is 90%, what is the value of α?
α = 1- 0.90
α = 0.10
Answer: 1st one is no solution
and then i cant see the question for the 2nd one
Step-by-step explanation: