3+2 =2+ 5+2 =3+

6+0 =3+

8+2 =9+

2+2 =4+

5+3 =6+

Add or subtract polynomial : –12qr? +13rq?

Ihave a triangle with a 60 degree angle. lets use d for that angle. what are the values of e and f if d is 60 degrees? and what do you notice about the values of e and f?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?