Answer:
(n+5)² - (n+3)² =
= (n² + 10n + 25) - (n² + 6n + 9)
= n² + 10n + 25 - n² - 6n - 9
= 4n + 16
= 4(n + 4) ⋮ 4
Sin 2θ = sin θ
2sin θ cos θ = sin θ
2cos θ = 1
cos θ = 1/2
θ = arccos(1/2) = 60° and 300°
θ = 60° and 300°
A and c are the correct answers
The equation that represents this situation is 560m = 8400
<h3>
Equation</h3>
An equation is an expression that shows the relationship between two or more variables and numbers.
Let m represent the number of minutes taken to discharge the water. Hence this can be represented by:
560m = 8400
The equation that represents this situation is 560m = 8400
Find out more on Equation at: brainly.com/question/2972832
