Abox contains 30 radio chips of which 10 are defective. if 7 chips are picked at random out of the box randomly, what is the probability that at least 8 are defective?

needs to show all work.

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles

Write the pair of fractions as a pair of fractions with a common denominator

Subject: geometryneed with 6 and 7