She can make 12 scarves if the area of each scarf is 4 square feet.
Answer:
-8
Step-by-step explanation:
(x-3y=136) + (18x+3y=288) We collect both processes to make y's disappear
19x=-152
x=-8
Answer:
4 1/2
Step-by-step explanation:
5. terms are separated by + and - signs
Answer:
4 is hypotenuse
Step-by-step explanation: