Answer:
= 18 red marbles
Step-by-step explanation:
Let x be the number of red marbles that must be added
Therefore;
New number or red marbles = x+12
Total marbles will be x+32
Thus;
The probability of selecting a red marble = (x+12)/(x+32)
Therefore;
(x+12)/(x+32)=3/5
5(x+12)=3(x+32)
5x+60+3x+96
2x=36
x=18
Answer:
3
Step-by-step explanation:
1+3 equals 4, 4 times 2 is 8, 8-10 is -2, -2 divided by 2 is 3
P = 2(12+8)
P = 2(20)
P = 40
answer: <span>perimeter = 40 cm</span>
Proshen it out evenly so evwryone gets the same amount or divide it by 300 people
