Question

x:4 and 45:20

a.8
b.9
c.10

Answer 1

I assume these two ratios are supposed to be the same.

x:4 = 45:20
x/4 =45/20

times 4

x = 4(45/20) = 9

Answer 2

like i know the answer how i explain

Answer 3

x:4 = 45:20

Cross multiply the two middle numbers. Cross multiply the first and last numbers.

20x = 180

Solve for x.

x = 180/20

x = 9

Answer 4

oh so that's how i explain

Answer 5

Yes.

Answer 6

okay thx

Answer 7

so in the middle what does solve for x mean?

Answer 8

Solve for x means find out what x is.

Answer 9

x is approximately equal to y.

Answer 10

There is no y in this problem.