Answer:
31
Step-by-step explanation:
a=(180-121)=59
c=(180-90)=90
180-59-90=31
Answer:
You can get a negative 5 if you subtract -7 minus -2.
Step-by-step explanation:
Answer:
(8 - 42x - 56y -12xy) is you're answer.
Step-by-step explanation:
Answer:
She needs 50 ft² of wood to cover the table
Step-by-step explanation:
You need to know the formula for area of a trapezoid, which is
A = (B1 + B2)h/s (add the bases together, multiply by the height, then divide
by 2)
We are given B1 = 12, B2 = 8, and h = 5, so plug them in and simplify
A = (12 + 8)(5)/2
A = (20)(5)/2
A = 100/2
A = 50 ft²
