Two addends which make a sum of 12

A small class has 10 students 3 of whom are girls and 7 of whom are boys. The teacher is going to choose two of the students at random. What is the probibility that the teacher will choose two girls? Write your answer as a fraction in simplest form.

Write two equivalent ratios of 11/4

5p+2=4p-1 Solving Equations with variables on each side

Lily brings 8 green apples for the class party

Dina hikes 1/2 of the easy trail and stops for a break every 3 1/4 miles. How many break will she take?

12 lb = ___ oz I forgot how many ounzes are in a pound = T

A confectioner sells the milk after mixing some water in it at the same rate at which he bought. If he gains 25 % in this way, the quantity of watey mixed with per litre of milk

What number is less than - 2 4/5 and greater than - 31/5

Katya is 15 years old, which is 5/6 of her brother's age. How old is her brother?

Complete the square so that the left side of x2 + 8x - 3 = 0 becomes a binomial squared.