Astate has a limit on the lengths of cargo trains. the train cannot exceed a length of 1,100 ft. train a has 28 cars at 40 feet each, and train b has 34 cars at 30 feet each. do the trains meet requirements?

What is an alternate exterior angle

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.