In 4 years time a mother will be three times as old as her son. Four years ago she was five times as old as her son. Find their present ages.

a triangle has sides of 7 and 13 units. the measurement of the longest side is missing. ted says that one possibility for the unknown side length is 19.

Determine the conconstants so that the expression simplifies to 14x + 11 4x + 8 (x + _) + _ + 2x

As 900 hundreds is 9 thousands

There are ten dogs at the dog park on a busy Saturday. Two of them are Corgis. What is the probability that a randomly selected dog is a Corgi? Type your answer as a fraction in simplest form.

Ms. Davis schedules after-school group activities for 18 girls and 24 boys. She wants to make equal groups with the same number of girls and the same number of boys in each group. Ms.

12 8/20 reduce fraction to lowest terms

What is the value of x? x-1/6=8 Enter your answer in the box in simplest form.

57 first-year teachers and 19 experienced teachers attended a school staff meeting meeting. What percentage of the teachers in the meeting were first-year teachers? Write your answer using a percent sign (%).

What is the product (3.4) (-7.8) a.-26.52 b. 11.2 c.-11.2. D.-21

4a-b Evaluate the expression when a=5 and b=-7