Answer:
m<A = 51, m<B = 39
Step-by-step explanation:
x+x+12=90
2x+12=90
2x=78
x=39
39° = m∠A
51° = m∠B
Complementary angles have a sum of their measures = 90
Let x = m∠B
then x + 12 = ∠A
m∠A + m∠B = 90
x + 12 + x = 90
2x + 12 = 90
2x = 78
x = 39° = m∠A
x + 12 = 39 + 12 = 51° = m∠B
He has it for 2 hours
A plane figure with 4 sides is called a quadrilateral.
The perimeter of a rectangle is 2L + 2W, where L and W are the length and width, respectively. The dimensions of the garden are given, 6 x 12 ft.
The amount of fencing needed is 2(6) + 2(12) = 12 + 24 = 36 ft of fencing
