If the world record for swimming the 50 meter frestyle event was 21.34 seconds. suppose the athlete swam at a constant rate, what was his speed?

What value of x is in the solution set of 4x – 12 s 16 + 8x?

If chord ab is congruent to chord cd, then what must be true about ef and eg?

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.