What is eight times a number equals 4 times the 9?

x=4.5

Step-by-step explanation:

8*x = 4*9

8x = 36

x = 4.5

9/2

Step-by-step explanation:

Let the unknown number = n

Therefore, we can decode your question in the following manner:

8 x n = 4 x 9

Recognize that 4 x 9 = 36

So, 8 x n = 36

Lets divide 8 in both sides

n = 36/8 = 9/2

Therefore, n = 9/2

the answer is n

y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17