Help i´m taking a Unit test!!George is building a fence around a rectangular dog run. He is using his house as one side of the run. The area of the dog run will be 240 square feet. The length of the run is 30 feet, and the width is (30 minus x) feet. The diagram below shows his plan. How many feet of fencing will George need for the dog run?
22 feet
68 feet
76 feet
82 feet

68

Step-by-step explanation:

240 divided by 30 = 8

perimeter is 8 + 8 + 30 + 30 but one side is the house so he’ll need 30 + 30 + 8 (which is 68) feet of fencing.

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

d. corresponding side lengths in similar triangles are proportional in length.

step-by-step explanation: