8 over 45.
Hope this helped
Answer:
x= -1, x=4
Step-by-step explanation:
5x²-15x-20
5x²-20x+5x-20=0
5x(x-4) +5(x-4)
(5x+5) (x-4) =0
5x=-5 or x=4
x= -5/5. or x=4
x= -1 or x=4
The area of the cross section of the column is 
Explanation:
Given that a building engineer analyzes a concrete column with a circular cross section.
Also, given that the circumference of the column is
meters.
We need to determine the area of the cross section of the column.
The area of the cross section of the column can be determined using the formula,

First, we shall determine the value of the radius r.
Since, given that circumference is
meters.
We have,

Thus, the radius is 
Now, substituting the value
in the formula
, we get,


Thus, the area of the cross section of the column is 
Answer:
78% probability that a randomly selected online customer does not live within 50 miles of a physical store.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
In this problem, we have that:
Total outcomes:
100 customers
Desired outcomes:
A clothing vendor estimates that 78 out of every 100 of its online customers do not live within 50 miles of one of its physical stores. So the number of desired outcomes is 78 customers.
Using this estimate, what is the probability that a randomly selected online customer does not live within 50 miles of a physical store?

78% probability that a randomly selected online customer does not live within 50 miles of a physical store.
Answer:
1/4 of the credit
Step-by-step explanation:
The problem statement tells you n=5. Putting that into the expression for lost credit, you get ...
1/(5-1) = 1/4
of the credit is lost for a question with 1 wrong answer.
You will lose 1/4 of the credit.