Answer:
13
Step-by-step explanation:
Answer:
3.25 cm is the answer to
of a cm.
Step-by-step explanation:
Given:
of a cm.
Solution:
Type I:
First we will see what is
i.e
And 0.25 is SAME.
Now,
Type II:

Answer:

Step-by-step explanation:
The formula to find the error is:

Where:
is the standard deviation
n is the sample size
So
n = 80 people
= 12 movies
Then
= confidence level = 0.99


We look for the Z value: 
Looking in the normal standard tables
Therefore:

Answer:
c
Step-by-step explanation:
Since the perimeters are equal, then equate the perimeter expressions, that is
4(x - 2) = 6(
x + 5) ← distribute parenthesis on both sides
4x - 8 = 3x + 30 ( subtract 3x from both sides )
x - 8 = 30 ( add 8 to both sides )
x = 38
Substitute x = 38 into either of the 2 perimeter expressions
perimeter = 4(x - 2) = 4(38 - 2) = 4 × 36 = 144 in → c