If the ratio of red marbles to blue marbles in a jar is 3 to 8, the meaning is for every 3 red marbles there are 8 blue marbles.
3 red marbles------------------8 blue marbles.
ratio=3/8
we have 40 blue marbles; we have to compute the number of red marbles.
1) Method 1; by the rule three.
3 red marbles-----------------8 blue marbles
x----------------------------------40 blue marbles
x=(3 red marbles * 40 blue marbles) / 8 blue marbles=15 red marbles.
answer: B. 15
Method 2: the ratio of red marbles to blue marbles is
ratio=number of red marbles / number of blue marbles
ratio=3/8
if we want to compute the number of red marbles we have to multiply the number of blue marbles by this ratio.
number of red marbles=ratio (red/blue)* number of blue marbles
number of red marbles=(3/8)*40=15
Answer: B.15
Answer:
.60
Step-by-step explanation:I need brainliest for the next rank I’d appreciate it
The answer is 58,420. If it is asking per year, and it is given in months all you need to do is multiply by 12 . add 250*12 and 35*12 and 55,000 and you get 58,420.
Answer:
63.585 or 63.59
Step-by-step explanation:
Volume of a circle: 
πr³
3³ = 27
27 x 3.14 = 84.78
84.78 x = 63.585 or 63.59
