Find the number of solutions using the discriminant b² - 4ac
9x²+12x+4=0
a.0
b.1
c.2

Two lines that do not intersect are skew. always sometimes or never

What does independent variable and dependent variable mean in math?

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.