One number is 5 times another number. The product of the two numbers is 245. Find the two numbers. Please explain this to me!!!

Question

anonymous · Answer

You're right about the equations 5N = X and NX = 245. What I would do is substitute 5N for X in the second equation since you know one X is worth 5N. So you would get:

N(5N) = 245; then distribute to get:

5N ^2 = 245; then divide both sides by 5 to isolate the variable

N^2 = 49; then take the square root of both sides

N = 7; put that value back into your original equation to get X = 5N = 5(7) = 35

N could also be -7 since both 7 and -7 square to be 49. In this case, X would be -35.

anonymous · Answer

If 5n = x, then put 5n in for x in the other equation

5n^2 = 245

then divide by 5

n^2 = 49

n = 7
5 times n = 35

The 2 numbers are 7 and 35

karatechopper · Answer

see i did the substitute part then got confused

anonymous · Answer

At least you tried