Olivia adds 67,828,215 and 8,679,682 she estimates that the sum is 75,000,000. christina estimates that the sum is 77,000,000 which estimate is more reasenable? explane

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2