U would replace ur -4 with the x’s so ur problem would look like <-2(-4)-10> and then solve that and u would get (2) for ur answer...
Answer:
the answer is 50
Step-by-step explanation:
let the width be x
the length will be x+5
perimeter=2l+2w
=2x+10+2x
4x+10=30
4x=20
x=5(width)
length=5+5=10
area =length*width
area=10*5=50 squared units
Answer:
graph A
Step-by-step explanation:
(x+3)(x+3) is the x-intercepts of the parabola.
x+3=0 is how to determine the x-intercept.
x= -3
Since both of them are -3, the graph would be A, because the part where the graph touches the x axis is -3.
Answer:
27x +42+ 3x²
Step-by-step explanation:
so im learning this rn in class and what you do is FOIL
So its stands for
First
Outside
Inside
Last
(3x+6)(x+7)
(3x+6)(x+7) -- 3x² (if you have x times x it is x to the second power)
(3x+6)(x+7) -- 21x
(3x+6)(x+7) -- 6x
(3x+6)(x+7) -- 42
Now add 21x and 6x
27x +42+ 3x²
you must have added the 21 and 6 incorrectly.
Answer: B) (96pi + 160) cm2
Step-by-step explanation: