Let s(x) = x^2 - cos x. a prove that has exactly one root on the interval (0.5, 0.9]. b) use the bisection method starting with the interval (0.5, 0.9] to approximate the solution to within 0.001 . show a, b & midpt at each step. justify why the number of iterations performed is sufficient. c) determine the number of steps of the bisection method that would be necessary to guarantee an absolute error of less than 10 -". (note that n steps means that the nth midpoint is accepted as the approximation.)

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

47.28 or 47.2857143

step-by-step explanation:

you just divide 331 by 7 and you get that answer. ( i think so tho)