Question

help me please solve this ​

Answer 1

Step-by-step explanation:

Annual average = 780 +570+600+350+900+650

6

=3850

6

= 641.6

Annual average is 641.6.

Answer 2

Answer:

$1. \\ \frac{780 + 570 + 600 + 350 + 900 + 650}{6} = \frac{3850}{6} \\ \frac{3850}{6} = 641.6666$

$2.( {3a + 6b)}^{2} = 9a + 36b + 36ab$

that's is your answer