Answer:
I'd say a
Step-by-step explanation:
I got 15xy+7y+5x
The answer is 140 percent
Answer: 
Step-by-step explanation:
By the geometric mean theorem,

So, by the Pythagorean theorem,

Its answer 3 because they are the only difference with two squared numbers
t + 7 = 21
---Subtract 7 from both sides
t + 7 - 7 = 21 - 7
t = 14
Hope this helps!! :)