Answer:
y = 60 when x = 12
Step-by-step explanation:
Direct variation is
y = kx
15 = k3
Divide by 3
15/3 = k
5 =k
y = 5x
Let x = 12
y = 5*12
y = 60
Answer: 
Step-by-step explanation:
To find the inverse of a function, you want to replace x with y and y with x. Then, you solve for y.
[replace y with x and x with y]
[subtract both sides by 7/2]
[multiply both sides by -2/3]
[distribute]
Now, we have our inverse function.
Answer:
2.22 km
Step-by-step explanation:
Assuming initially both were at the same point ...
Distance from Rico = 5.98 km.
Distance from Josh = 8.2 km in the same direction.
If they were going in the same direction, then the final distance between the two can be written as follows:
d = 8.2 - 5.98 = 2.22 km
After 20 minutes, Rico and Josh were 2.22 km away. of distance between them.
I always like to start by removing the absolute value signs. Solving the two equations, -x+4 = 2x-2 we get 6 = 3x, x = 2
If we test ±2 we get the following:
x = 2; | -(2) + 4 | = | 2(2) - 2 |, | 2 | = | 2 |, 2 = 2
Now we test
X = -2; | -(-2) + 4 | = | 2(-2) - 2 |, | 6 | = | -6 |, 6 = 6
Both +2 and -2 work.
Answer:
18 +2 + 2.5 + 3 = 25.5
Step-by-step explanation:
just add
