The correct option is first option: x=t(y-4f)
Further explanation:
Given equation is:

In order to solve the equation for x, we have to isolate x on one side of the equation
Using Subtraction property of equality
Subtracting 4f from both sides

Multiplication property of equality
Multiplying both sides by t

Hence, the correct option is first option: x=t(y-4f)
Keywords: Linear equation, Equation solution
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Answer:

Step-by-step explanation:
<u>Cinematics
</u>
When an object moves at a constant speed, it can be computed as

Where x is the distance traveled and t the time needed to complete it at the constant speed v
If we wanted to compute t from the equation above, then

Elia rode her bicycle from her house to the beach at 18 km/h and then from the beach to the park at 15 km/h, taking 1 hour in the whole travel, each distance being equal. If we call b as the number of hours it took Elia to ride from her house to the beach, and p the number of hours it took her to ride from the beach to the park, then we can compute


The question doesn't ask for something in particular, so I'm helping you by solving the complete problem. We know the total time is 1 hour, so

Replacing b and p

Multiplying by 90

Simplifying and solving for x



We finally compute b and p

Answer:
Step-by-step explanation:
we know that
The simple interest formula is equal to
where
I is the Final Interest to pay
P is the amount of money borrowed
r is the rate of interest
t is Number of Time Periods
in this problem we have
substitute in the formula above