Answer:
yes it is essential
Explanation:
a switch is an electrical component that can disconnect or connect the conducting path in an electrical circuit; controls current flow into a circuit
B. trajectory
because it is a set projectile wether or not it was calculated
plz mark brainliest
what's up? this answer is D. best of luck with your studies
Answer:

Explanation:
<u>Function Modeling
</u>
We can express the relations between different variables and magnitudes in mathematics formulas. This allows us to better manipulate the field data and even make predictions and take decisions out of them.
We know Cortez spends a total of 65 minutes of running and swimming. Let's call r the minutes of running and s the minutes of swimming. The first condition implies that

Or, equivalently

The energy burnt when running are 15 calories per minute. It means that he burns 15r in r minutes. Similarly, Cortez burns 6s calories when swimming. The total energy he burns is

Replacing the formula for s, we get


That formula gives the total calories Cortez burns in r minutes of running