Answer:
<em>= 4a + 11</em>
Step-by-step explanation:
a+7+3a+4
Combine Like Terms:
= a + 7 + 3a + 4
= (a + 3a) + (7 + 4)
<em>= 4a + 11
</em>
Answer: 9
Step-by-step explanation:
12 + 8 + 7 + 12 + 6 = <u>45</u>
There are <u>5</u> numbers
45 / 5 = 9
Answer:
20°
Step-by-step explanation:

Answer:
175.9
Step-by-step explanation:
AL=2πrh=2·π·4·7≈175.92919 rounded to the nearest tenth would be 175.9