ANSWER= 25
a= 4 b=7
10+(7-4)•5
subtract 7-4= 3
10+3•5
multiply 3•5=15
10+15
add them and your answer is 25
B because the amount of money they earn per hour multiplied by how many hours they worked is equal to what they earned in total
To find the area of a regular polygon, all you have to do is follow this simple formula: area = 1/2 x perimeter x apothem. Here is what it means: Perimeter = the sum of the lengths of all the sides.
Answer:
(2x - 9)(2x + 9)
Step-by-step explanation:
4x^2 - 81 = (2x - 9)(2x + 9)
