Answer:
30
Step-by-step explanation:
HOPE THIS HELPS
PLZZ MARK BRAINLIEST
You have a lot of questions here, I can help you with a few of them.
When you simplify the polynomials, you put together all of the terms that have the same degree. That means the variables have the same exponents. The number of terms are the items separated by plus and minus signs.
Here are the answers for the first three:
1)

2)

3)
Answer:
0.64, 65%, 2/3, 7/10.
Step-by-step explanation:
2/3=0.667
65%=0.65
7/10=0.7
From least to greatest:
0.64, 65%, 2/3, 7/10
Just take the area of the whole backyard(look up the formula for area of a trapezoid) then if I’m right just subtract the area of the flower gardens
This is impossible to answer. This all depends on what you define as a 'person.' If you are talking about the first Homo Sapiens, then that would be around 2 million years ago, but the predecessors of Homo sapiens could also be considered 'people,' so then you'd have to determine at what point they came into existence.