You can use the FOIL method to solve: multiply FIRST, multiply OUTSIDE, multiply INSIDE, multiply LAST to help remember to multiply all terms.
=(7x – 6)(8x + 3)
multiply first term by first term, multiply outside by outside, inside by inside, last by last
=(7x*8x) + (7x*3) + (-6*8x) + (-6*3)
multiply terms
=56x^2 + 21x - 48x - 18
combine like terms
=56x^2 - 27x - 18
ANSWER: A) 56x^2 - 27x - 18
Hope this helps! :)
Answer:
The perimeter is 100 ft
Step-by-step explanation:
Width = 9 ft
It is five times as long as it is wide
Length = 5*width = 5*9 = 45 ft
P = 2(l+w)
=2(45+5)
=2(50)
= 100 ft
Answer:
scale factor: 1.16
perimeters: 21.84 ft and 25.36 ft
Step-by-step explanation:
The area for an octagon is as follows:
solved for "l":
now we calculate the value of each side:
l1 = 2.73
l2 = 3.17
The scale would be:
3.17 / 2.73 = 1.16
And the value of the perimeter of the first would be:
2.73 * 8 = 21.84
and the second:
3.17 * 8 = 25.36
Answer:
No
Step-by-step explanation:
It is not a fair test because the test sample is not equal.
hope it helps.
