Answer:
The answer is 21
Step-by-step explanation:
ANSWER

EXPLANATION
The given rectangle has area,

It was given to us that, the length of the rectangle is l=(x+8)
To find the width, we need to factor, the expression for the area.
We split the middle term to get,

We now factor by grouping;


We know that area of a rectangle is

Hence the width of the rectangle is,
Answer:
Sample size should be atleast 617
Step-by-step explanation:
given that a 95% confidence interval for the mean of a population is to be constructed and must be accurate to within 0.3 unit.
i.e. margin of error <0.3
Std devition sample = 3.8
For 95% assuming sample size large we can use z critical value
Z critical = 1.96
we have

Sample size should be atleast 617 to get an accurate margin of error 0.3
0, 1, 2
sorry im not sure i think thsi may be missing some information
Answer:
B
Step-by-step explanation:
The rulers tell you the length of the sides