I believe you would have to divide 125 by 2 to get the miles per hour. I got 62.5mph I'm not sure if you need a proper rounded answer, but I think this is correct.
Answer:
x=2
Step-by-step explanation:
3x^2=12 divide both sides by three
x^2=4 now find the square root of both sides
x=2
Answer:
-11.3333
Step-by-step explanation:
Convert both fraction to decimals
- 2 2/3 = 2.66
- -4 1/4 = -4.25
Answer:
Inverse of a function
Step-by-step explanation:
If the x- and y-values in each pair of a set of ordered pairs are interchanged, the resulting set of ordered pairs is known as the inverse of a function.
For example, given the following function:
y = 2x
If x=0 → y= 0
If x=1 → y= 2
If x=2 → y= 4
Now, if we find the inverse of the function:
y = 2x → x = 2y → y = x/2
Now:
If x=0 → y= 0
If x=2 → y= 1
If x=4 → y= 2
Comparing both cases, you will notice that the ordered pairs are effectively interchanged.
A) x + y = 17
B) x * y = -308
B) y = -308 / x Substituting this into A)
A) x -308 / x = 17
A) x^2 -308 = 17x
A) x^2 -17x -308 = 0
x = 28
y = -11
