Answer:
3(7+5)
Step-by-step explanation:
21+15
Each term is divisible by 3
3*7 +3*5
3(7+5)
2.8 or if rounded to the nearest tenth so 2.8√8
A (A right triangle with a side length of 5 and hypotenuse with length \sqrt{74})
Answer: below in picture
explanation: also in picture