S=-1 see attachment for explanation
Step-by-step explanation:
Here, we'll need to multiply these two values together. I'll use the expansion formula, which goes as follows:


Lets apply this to the following equation:



- Remove parenthesis and add.

Answer:
x^2+10x+21
Answer: 26
Step-by-step explanation:
divide 19.5 by 3/4 (0.75)
Just do this to find the percentage:
13/25 * 100%
= 0.52 *100%
= 52%
Answer:
95% Confidence interval: (0.73,0.79)
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 1021
Percentage of Americans believe that high achieving students should be recruited to become teachers

95% Confidence interval:


Putting the values, we get: