A star-patterned quilt has a star with the angles shown. What is the value of x? The diagram is not to scale.

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b