Answer: it’s 2.1
Step-by-step explanation:
Amplitude + y value 3+-0.9=2.1
Your welcome :)
An example for #1 would be that: 15 is divisible by 3, but not 9. every third multiple of 3, (9, 18, 27,...) is divisible by 9 because 9 is three times the size of 3.
For part two the first number that I thought of is 23.
First do $70(4). That would equal $280. Then do $280+$40=$320
Answer:
I think it is D
Step-by-step explanation:
Maria = x
Tom = y
Use substitution
x+y=30
2y=x
2y+y=30
3y=30
y=10
Tom is 10 years old.
x+y=30
x+10=30
x=20
Maria is 20 years old.
