Beth has 28 math problems for homework. She has 4 times as many problems as her sister, Mary. Which equation shows how many problems Mary (m) has?
a.) 28 x 4 = m b.) 28 ÷ 7 = m c.) 7 x m = 28 d.) 28 ÷ 4 = m

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.