This expression is equivalent to:
[ 7^(log to the base 7 of 3)]^(-2), or [3]^(-2)], or 1/9.
Answer:
Step-by-step explanation:
AD = DC and BE=EC ⇒
DE = 1/2AB
- 4x + 1 = 1/2(11x - 25)
- 2(4x + 1) = 11x - 25
- 8x + 2 = 11x - 25
- 11x - 8x = 2 + 25
- 3x = 27
- x = 27/3
- x = 9
DE = 4*9 + 1 = 36 + 1 = 37
Answer:
Step-by-step explanation
Answer:
4x^2-5x+1=0
=4x^2-x-4x+1=0
The second 4x is because of 5x=-x-4x
=xmultiply(4x-1)-4x-1)=0
=(4x-1)x(x-1)=0
=4x-1=0
Another value for x is
x-1=0
Final
=x=1/4
=x=1
Finally the answers are
Value of first X is
X=1/4
Value of second X is
X=1
Steps:
let “x” be number of hrs
let “y” be total cost
Abe:
50x + 75 = y
Plumbing Service:
65x=y
Since both equations are equal to y, you can set them equal to each other.
65x = 50x + 75
isolate for x:
65x - 50x = 75
15x = 75
x = 5
therefore it will take 5 hours for each to cost the same. you should call Abe for any task more than 5 hours because it will be cheaper and you should call the Plumbing Service for any task less than 5 hours because it will be cheaper.
Answer:
The answer is C i.e an=4n-7
