Answer:
the oldest is 31 years old, the youngest is 15.5 years old, and the middle is 10.5 years old
Step-by-step explanation:
First you take the two halves from 10.5 and 15.5 and add the two halves to get 1. So you would make an equation. The one I used was (10+1)=(15+31)= 57
Answer:
x=3
Step-by-step explanation:
We are taking 2 times the sum ( addition) of 18 and x
2 ( 18+x) = 42
Divide each side by 2
2 /2 ( 18+x) = 42/2
18+x = 21
Subtract 18 from each side
18+x-18 = 21-18
x = 3
Answer:
Divide both sides by 2
Step-by-step explanation:
We have the equation
2(x + 14) = 40
We divide both sides by 2
2(x + 14) = 40/2
x + 14 = 20
x = 20 - 14
x = 6
Therefore, the most helpful first step for solving Ravi's equation is: Divide both sides by 2
868 is about 870, and 28 is about 30, so your expression would be 870 divided by 30 which would be 29 and the actual answer is 31, so your estimate would be close to your actual answer.
The probability of rolling a multiple 2 or a number greater than 3 is 1/3