Answer:
ok it is very hardest app
Answer:
The percentage of increase in fuel expenses is 20%
Step-by-step explanation:
Given:
Fuel expense in last year = $800
Fuel expense in this year = $960
To Find:
The percentage of increase
Solution:
Let the percentage increase be X
Then X =
Now substituting the values we get,
X= 20%
It depends on the systems of equations. I would stay away from elimination, go for substitution and graph only if asked.
49w² -112w + 64
first, you have to find 2 numbers that add up to equal -112, but also multiply together to get a product of 3136 (49 * 64)
two numbers that add to -112 and multiply to equal 3136 is -56 and -56
we can add them into the equation by putting them in for -112x
49w²-56w-56w+64
we now look at what the first 2 numbers have in common and what the last two numbers have in common
49w² and -56w both have w and 7 in common so we can divide 7w
7w(7w -8)
-56w and 64 both have -8 in common so we can divide by -8
-8(7w-8)
now we take the 2 numbers on the outside and bring down the numbers in the brackets
(7w-8)(7w-8)
(7w-8)²
Answer:
Step-by-step explanation: