Hector must find the sum of 50 + 83 + 50 by using mental math. which property allows hector to simplify the equation to 50 + 50 + 83 and find an equivalent sum? a. associative property b. commutative property c. distributive property d. identity property

Which data set has a greater spread? why? set a: {38, 12, 23, 48, 55, 16, 18} set b: {44, 13, 24, 12, 56} has a greater spread because .

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827