If the ratio of purple marbles to orange marbles is 3 to 8, how many orange marbles will I have if I have 48 purple marbles?

You will have 18 orange marbles

Step-by-step explanation:

Set this up as an equation

Variable x = number of orange marbles

3/8 = x/48

Cross multiply

3 × 48 = 8 × x

144 = 8x

Divide both sides by 8 to isolate the variable

144 ÷ 8 = 8x ÷ 8

18 = 1x

18 = x

18 orange marbles

Check work:

Substitute the variable x for the answer

3/8 = 18/48

Cross multiply

3 × 48 = 18 × 8

144 = 144

If the numbers equal, the answer is correct

Step-by-step explanation:

128 marbles

First you divide 48 by 3 and u get 16. Then u multiply 16 by 8.

To prove just simplify

3/8=48/128

3/8=3/8

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

i need a picure

step-by-step explanation: