Answer:
5.5
Step-by-step explanation:
5.5 times 2 equals 11 minus 2 equals 9
7 and 6 have the number 42 in common so 42 can be used as the denominator
Answer: The answer could be C because is the image of the rotation by 90 degrees clockwise. I hope its right
Answer:
The inverse of the function is ±sqrt( (x+4)/2
Step-by-step explanation:
Set the function equal to y
y = 2x^2 -4
Exchange x and y
x = 2y^2 -4
Solve for y
Add 4 to each side
x+4 = 2y^2 -4+4
x+4 = 2y^2
Divide each side by 2
(x+4)/2 = 2/2y^2
(x+4)/2 = y^2
Take the square root of each side
±sqrt( (x+4)/2 )= sqrt(y^2)
±sqrt( (x+4)/2 )= y
The inverse of the function is ±sqrt( (x+4)/2
