1.
the line of symmetry is x=2, means that the x coordinate of the vertex is x=2.
the point x=2 is the midpoint of the roots
and
.
so
Remark: in the x-axis, if c is the midpoint of a and b, then
2.
since
and
are roots
and
3.
equalizing:
in the left side factorize a, in the left side factorize 8:
![a[(x_1)^{2}-(x_2)^{2}] =8(x_1 -x_2)](https://tex.z-dn.net/?f=a%5B%28x_1%29%5E%7B2%7D-%28x_2%29%5E%7B2%7D%5D%20%3D8%28x_1%20-x_2%29)
in the right side use the difference of squares formula:
simplify by
substitute
with 4:
a=2
Answer: C)2
Answer:
10 and 15, 20 and 25, and 35 and 45.
Step-by-step explanation:
Answer:
A model that shows a pitcher holding 8 times the amount of a glass
Step-by-step explanation:
I would need a picture of the models, but I think I can still help.
Any model that shows a pitcher holding 8 times as much as a glass is the correct model. Be sure to read carefully so you pick the right model.
Answer:
-13 5/7 divided by -56/91 is 22 2/7
Step-by-step explanation:
By checking, (don't do it my way)
#1. 13 5/7 is 96/7 as an improper fraction.
#2 Then, make it negative.
#3 -56/91 is simplified as -8/13
#4 Divide. --> -96/7 :(-8/13)=-96/7*-13/8= -96/*(-13)/7*8=1248/56=156/7
=22 2/7
Answer:
x=4
Step-by-step explanation:
5-3x=-7
1) you subtract the 5 from both sides
-3x=-12
2) then you divide both sides by -3
x=4
