Both positive, so quadrant I
Total questions are 30.
70% of 30
=30(70/100)
=21
So, the questions can be wrong are 30-21.
=9 questions..
Thanks!
Answer:
D - 10
Step-by-step explanation:
15x - 30 = 10x + 20
15x = 10x + 50
5x = 50
x = 10
Two factors that will add up to 15 are 12 and 3.
Factors are two numbers that we multiply together to get a product.
12 x 3 = 36. They add up to 15. 12 + 3 = 15.