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
Answer:
24 feet 60-36=24
Step-by-step explanation:
Let me know if this is right.
Answer:
Step-by-step explanation:
Three digits
They add up to fifteen. (Example: 6 + 4 + 5 = 15.)
The Hundreds digit is 1 more than the units digit. (Example: 6 is 1 more than 5 in the example number.)
The Units digit is 1 more thn the tens digit. (Example: 5 is more then 4 in the example number.)
One digit in her number is 4.
Are YOU going to get candy?
Hope this helps :)
It would be a right scalene triangle.
hope this helped :)
Answer:
10
Step-by-step explanation: