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.

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

Thus the equation is found

Solve the equation

-3x = 21

Divide both sides by -3

Thus the second number is -7

answer: r there any options?

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional