Question

The product of two numbers is 21. If the first number is -3, which equation represents this situation and what is the second number? A. The equation that represents this situation is x − 3 = 21. The second number is 24. B. The equation that represents this situation is 3x = 21. The second number is 7. C. The equation that represents this situation is -3x = 21. The second number is -7. D. The equation that represents this situation is -3 + x = 21. The second number is 18.

Answer 1

C.

The equation that represents this situation is -3x = 21. The second number is -7.

Explanation:

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Answer 2

Option C

The equation that represents this situation is -3x = 21

The second number is -7

Solution:

The first number is -3

The product of two numbers is 21

Let the second number be "x"

The equation that represents this situation is:

Product of first and second number = 21

`-3 * x = 21\\\\-3x = 21`

Thus the equation is found

Solve the equation

-3x = 21

Divide both sides by -3

`x = (21)/(-3)\\\\x = -7`

Thus the second number is -7