Blake eses red beads and white beads to make key chains. He wants to know how many white beads he needs when he uses 21 red beads. Blake thinks he needs 70 white beads because
3 x 7= 21 and 10 x 7 = 70

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

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 =

What is the y-intercept of the line given by the equation