Answer: 40k⁶-15k⁴
Step-by-step explanation:

Answer:
Number of sides of the polygon
Step-by-step explanation:
The formula
is the sum of the measures of interior angles. So that's what S stands for. The only other variable remaining is n which is the number of sides of the polygon.
There's nothing I can do to help you understand this, you just have to memorize it.
The expression obtained after solving the given expression is,
<h3>What is a BODMAS rule?</h3>
For the Bracket, Order, Division, Multiplication, Addition, and Subtraction rules, BODMAS stands for Bracket, Order, Division, Multiplication, Addition, and Subtraction.
Given expression ;
9(5x + 1) ÷ 3y
Follow the BODMAS rule;
Step 1; Divide

Step 2; Multiply

Hence the expression obtained after solving the given expression is,
To learn more about the BODMAS rule, refer to brainly.com/question/23827397.
#SPJ1
Answer:
16
Step-by-step explanation:
To solve, we can use an equation finding the average of the siblings'ages.

Answer:
-20
Step-by-step explanation:
First, you divide both sides by -2/5, which would get you c = 8 * -5/2 (Because when you divide, you multiply by the reciprocal). 8 * -5/2 is equal to -20. The answer is -20.