Tina is twice as old as her cousin sally. their ages when added are 21 years old. how many years are old is each girls

The height and radius of a right cylinder are each 8 cm. what is its volume

All acute triangles are similar. a. True b. False

What is 0.6 as a fraction in simplest form?

2x - y = - 2 x = 14 + 2y What is the value of the system determinant? What is the value of the y-determinant? What is the value of the x-determinant? What is the solution to the system of equations?

What is the least common denominator of the expression? x+1/4x and 3 (x+1) / 2x^2?

Angelina spend $50 on 16 packages of cookies for her club members. sugar cookies cost $2.50 per package and chocolate chip cookies cost $3.50 per package. how many packages of each cookie does Angelina buy?

What are solutions to the equation below x^2 + 3x-18=0

A circle's diameter is 22 inches. What is the circle's circumference

You grew 3.8 inches since last year. If you are 61.2 inches tall now, how tall were you a year ago? Write and solve an equation.

A square and rectangle have the same perimeter. The rectangle is 13 cm long and 7 cm wide What is the length of a side of the square