-6a-12b+18c+24d-8a-3b+4c+2d=-6a-8a-12b-3b+18c+4c+24d+2d=
=-14a-15b+22c+26d
Answer: 10a, all of the numbers can be divided by 10a
10a (6x − 4y + 5z) = 60ax - 40ay + 50az
For a triangle to be a triangle all the angles have to add up to 180 degrees. So 52 degrees plus 28 degrees would equal 80. So now to find the answer 180 - 80 then your final answer is 100! Hope This Helps
Answer:
44cm^2
Step-by-step explanation:
（a+b)h/2
=(9+13)4/2
=22x4/2
=88/2
=44
The Area is 44 cm^2, so it's the first choice.
