3 years ago

Which of the following is a positive statement?

Physics

1 answer:

Ainat [17]3 years ago

5 0

Answer:B

Explanation:

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Hi I’m having some difficulty with this question could really use some help!

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1 year ago

Which way does current always flow?

Phoenix [80]

Answer:

Electrons move through the wires in the opposite direction.

Explanation:

The direction of an electric current is by convention the direction in which a positive charge would move. Thus, the current in the external circuit is directed away from the positive terminal and toward the negative terminal of the battery.

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3 years ago

The continental crust is:

vlada-n [284]

the relatively thick part of the earth's crust that forms the large landmasses. It is generally older and more complex than the oceanic crust.

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3 years ago

Read 2 more answers

Express 2759 mockingbirds in kilomockingbirds. answer in units of kmockingbird

Nadya [2.5K]

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3 years ago

Cortez's workout plan involves a total of 65 minutes of running and swimming. He burns 15 calories per minute when running and 6

shutvik [7]

Answer:

$E=9r+390$

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

$r+s=65$

Or, equivalently

$s=65-r$

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

$E=15r+6s$

Replacing the formula for s, we get

$E=15r+6(65-r)$

$\boxed{E=9r+390}$

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

4 0

3 years ago