The invese switches x and y so basically
if
f(21)=z then f⁻¹(z)=21
therefor
f(z)=21 and f⁻¹(21)=z
basically solve for the value that makes the functino equal 21
21=6(x+2)-3
add 3 both sides
24=6(x+2)
divide by 6
4=x+2
minus 2
2=x
answer is 2
Answer:
b
Step-by-step explanation:
Pythagoras formula for the relation of the side lengths of a right-angled triangle :
c² = a² + b²
c is the Hypotenuse (the side opposite of the 90 degree angle). a and b are the "legs".
so, we have here
c² = 1² + 2² = 1 + 4 = 5
c = sqrt(5) = 2.236067977...
so, answer option c is too big (values bigger than 3).
answer options d and e are too small (values smaller than 2).
a
9/4 = 2.25
10/4 = 2.5
this is also too big .
that leaves us with b
17/8 = 2.125
18/8 = 9/4 = 2.25
that is correct
5 hours.....................
Step-by-step explanation:
Answer:
Original wage was $11.74/hr
Step-by-step explanation:
Let your beginning hourly rate be r.
Then 1.00r was your previous rate of pay.
Also, 0.15r was your pay increase.
Thus, 1.15r = $13.50. Solve this for r:
r = $13.50 / 1.15 = $11.74/hr
Check: Does $11.74 plus the raise 0.15($11.74) come to $13.50/hr?
$11.74/hr + $1.76/hr = $13.50. YES
