I believe the equation would be 5(8+x) = 75
Answer:
See below.
Step-by-step explanation:
Convert to decimal form
7 3/5 = 7.6
7 7/10 = 7.7
10 2/5 = 10.4
8 1/2 = 8.5
So the answer is
7 3/5 , 7 7/10, 8.3, 8.1/2, 10.2 10 2/5, 11.1.
Given Information:
Distance = 160 miles
Required Information:
Rate = r = ?
Answer:
Rate = r = 20 mph
Step-by-step explanation:
Recall that the rate is given by
Rate = distance/time

It is given that the same trip would have taken 2 hours longer if he had decreased his speed by 4 mph.
Mathematically,

Simplify the equation

Now we are left with a quadratic equation.
We may solve the quadratic equation using the factorization method

So,

OR

Since rate cannot be negative, discard the negative value of r
Therefore, the rate is

The answer can be found by replacing x with 1 in 1 - x. Therefore f(1) equals 0
Hope that helps you
It would take the car 5 hours to travel 300km.
Equation used to solve: (120÷2)×6