Let a = {the sum of the number of cubes is odd}, and let b = {the sum of the number cubes is divisable by 4}.
list the outcomes in a u b.

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

Which statements regarding the diagram are true? check all that apply.

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?