Answer:
f^-1(x)=1/5x-2
Step-by-step explanation:
f(x) = 5x + 10
Use substitution
y = 5x + 10
Interchange the variables
x = 5y + 10
Swap the sides
5y + 10 = x
Move the constant to the right
5y = x - 10
Divide both sides
y = 1/5x-2
Use substitution
f^-1(x)=1/5x-2
Final Answer
Hope this helped!
Area of a rectangle is A = L*W.
Here, A = 56 cm^2 (not 56 cm).
= (56 cm^2)=( L )( W ) = (x+2)*(2x-5) = 2x^2 - 5x + 4x - 10
Simplifying, 2x^2 - 5x + 4x - 10 = 56, or 2x^2 - x - 66 = 0.
Solve this using the quadratic formula:
-(-1) plus or minus sqrt ( (-1)^2 - 4(2)(-66) )
x = -------------------------------------------------------------
2(2)
Finish the work: find x. Most likely you will need to check both of the roots. Keep in mind that x will likely be a positive number.
Answer:
i think its twelve nine and five
Step-by-step explanation:
not one hundred percent sure
Answer:
3
Step-by-step explanation:
hours J G
1 50 0
2 100 75
3 150 150