Number 13 is 12 it’s a right angle so you do 90’-42 then you get 48 divide that by 4 your get 12
Answer: the answer is 7
Step-by-step explanation:
Area of quadrilateral= Length x Width
a+5 times a-2 = 60 which is the area
7+5 times 7-2= 60
12 times 5= 60
Therefore, a equals 7
Answer: Letter Choice (B)