Sydney’s age is 50.
Devaughn age: x-15 Sydney’s age: x
x-15+x = 85
2x-15 = 85
2x = 100
x = 50
-35
5 * 7 = 35, and the negative in 7 makes it a negative number
To find an average, add all the speeds of each arrow together and divide that number by the total number of arrows shot.
example:
Arrow 1:
20mph
Arrow 2:
23 mph
Arrow 3:
23 mph
= 20+23+23 = 66
66÷ 3= 22 mph on average
Answer:
Two hundred million five hundred and twenty five
Step-by-step explanation:
