The answer to question 3 is D. 15(4a+3). And the answer to question 4 is A. 90. Have a great day
-7 - 3x = 9x(x + 2)
Standard Form:
-9x^2 - 21x - 7 = 0
Let the base of the ladder be x ft and the extension be y ft.
"when fully extended, a ladder is 28 feet in length."
means: x+y=28
"<span>the extension is 4 feet shorter than the base</span>"
means: y=x-4, that is x-y = 4, (taking y to the side of x, and -4 to the other side of x and y)
thus, we have the system of equations:
1) x+y= 28
2) x-y=4
adding the 2 equations, we have:
(x+y)+(x-y)=28+4
2x=32
x=32/2=16
x+y=28, so 16+y=28, thus y=12
Answer: Base: 16, Extension 12
Answer:
B
Step-by-step explanation:
=3+(-7)
=3-7
As 3 is a positive number(+), it is referred as it gained yards. 7 is referred as lost yards because it's a negative number(-).
Hope this will help ya!
Answer:
22
Step-by-step explanation:
just add 8 to 14, then there is your number that would equal 14 if 8 was subtracted from it
