Usually I would use my head, but you can use whatever you want.
Part one of answering how to factor
16 bc all sides of a square are congruent and area = LxW so 4x4=16
Answer:
There were 30 questions on the test.
Step-by-step explanation:
1. Set up your equation: 27/90 = y/100
2. Next you want to cross multiply: 2700 = 90y or 270 = 9y
3. Divide 270 by 9 to find your y: y = 30
There were 30 questions on the test.
