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
Answer:
2(2n² + 2n) + 1
Step-by-step explanation:
(2n + 1)² can also written as
(2n + 1) × (2n + 1)
= 4n² + 2n + 2n + 1
= 4n² + 4n + 1
= 2(2n² + 2n) + 1
= an odd
Hence Proved!
<u>-TheUnknownScientist</u><u> 72</u>
5/2 = 2.5
3 ounces x 2.5 = 7.5 ounces of weed killer
I really don’t know the answer to this question yet but ima get back to you on it.
The correct answer is B 26!/21! turned this in already and gotten a 100. Hoped this helped ya.
