You take 56 and divide it by 7 leaving you with 8 than you times it by 3 because the fabric is 3 inches wide leaving you with 24
the answer to your question is
D. 24
Answer:
x=1 and y=5
Step-by-step explanation:
simultaneous equations: substitution method
2x+4y=22----equation 1
7x+y=12---equation 2
from equation 2 make y the subject
y=12-7x----equation 3
substitute y into equation 1 to find x
2x+4(12-7x)=22
2x+48-28x=22
collect like terms
2x-28x=22-48
-26x=-26
divide by -26
-26x/-26=-26/-26
x=1
substitute x=1 into equation 3
y=12-7(1)
y=12-7
y=5
therefore, x=1 and y=5
Use FOIL (First, Outside, Inside, Last)
x(x) = x²
x(9) = 9x
-2(x) = -2x
-2(9) = -18
x² + 9x - 2x - 18
simplify by combining like terms
x² + 9x - 2x - 18
x² + 7x - 18
x² + 7x - 18 is your answer
hope this helps
Answer:
Step-by-step explanation:
Given
See attachment for probability distribution
Required
Determine the mean and the standard deviation
The mean of the distribution is:
and
So, we have:
So:
The standard deviation of the distribution is:
Where:
So, we have:
So:
Where
Recall that:
