What is the common denominator of 2/7 and 1/4

Solve for the equation. 4x - 13 = 2x + 9

How many and of which kind of roots does the equation f(x)=x3−x2−x+1

A. the probability that a product is defective is 0.1. what is the probability that there will be 1 or less defective products out of the next 8 produced products b. the expected number of imperfections in the coating nylon for parachutes is 6 per 100 yards. what is the probability of finding 12 or fewer imperfections in 260 yards c. in a lot of 54 products there are 9 defective products. calculate the probability that not more than 1 is defective from a random sample of 17 products.