Answer:
8
Step-by-step explanation:
Answer:
I think the answer is a .
False because a number is rational if we can write it as a fraction where the top number of and bottom number are both whole numbers but irrational numbers is any number that is not rational. It is a number that cannot be written as a ratio of two integers(or cannot be expressed as a fraction)
Answer:
30/3 = 10
Step-by-step explanation:
Divide 30 by 3 to get your answer which is going to be 10
Answer: 7 years
Step-by-step explanation:
let x be the age of Mary
so John's age will be 2x
the equation becomes
2x+x=21
3x=21
x=21/3
x=7