Answer:
8 marbles
Step-by-step explanation:
Since Carl has 7 times as many marbles as Bill (who is the base unit), Carl's number of marbles is equal to 7 units.
7 units = 56
1 unit =

Bill has 8 marbles.
Answer:
here
Step-by-step explanation:
16 karat gold is 16 parts gold to 8 parts other material for a pure gold percentage of 67%.
Only two of them are the correct answers to this question.
7,248,000,000 thats the answer for the nearest billion
Answer:
x=+30
Step-by-step explanation:
1200-5(3x+30)=600
We move all terms to the left:
1200-5(3x+30)-(600)=0
We add all the numbers together, and all the variables
-5(3x+30)+600=0
We multiply parentheses
-15x-150+600=0
We add all the numbers together, and all the variables
-15x+450=0
We move all terms containing x to the left, all other terms to the right
-15x=-450
x=-450/-15
x=+30