Answer:
x=2 true solution
x=-3 extraneous
Step-by-step explanation:
sqrt(x+7) -1 = x
Add 1 to each side
sqrt(x+7) -1+1 = x+1
sqrt(x+7) = x+1
Square each side
(sqrt(x+7))^2 = (x+1)^2
x+7 = x^2 +2x+1
Subtract x from each side
7 = x^2 +x +1
Subtract 7 from each side
0 = x^2 +x - 6
Factor
0 = (x+3)(x-2)
Using the zero product property
x+3 = 0 x-2 =0
x=-3 x=2
Check solutions
x=-3
sqrt(-3+7) -1 = -3
sqrt(4) -1 = -3
3 =-3 extraneous
x=2
sqrt(2+7) -1 = 2
sqrt(9) -1 = 2
3 -1 =2
2 =2 true
Will be the square root of 9 squared plus 12 squared.
that is square root of 81 plus 144.
square root of 225.
answer is 15
Answer:
NOPE IM STILL HERE
Step-by-step explanation:
Answer/Step-by-step explanation:
The corresponding segments of two similar figures are always proportional to each other. I'm other words, the ratio of their corresponding segments are equal.
The figures shown above in this question are not similar figures because their segments are not proportional to each other.
This is because:
DE/KL ≠ FG/MN
DE = 2 units
KL = 1 unit
FG = 1 unit
MN = 1 unit
DE/KL = 2/1 = 2
FG/MN = 1/1 = 1
Thus, DE/KL ≠ FG/MN.
Therefore, the figures are not similar.
Y-7=-2(x-4)
y-7=-2x+8
y=-2x+15