The potential energy, P, in a spring is represented using the formula P = A equals StartFraction one-half EndFraction b h. kx2. Lupe uses an equivalent equation, which is solved for k, to determine the answers to her homework. Which equation should she use?

k = 2Px2
k = k equals StartFraction one-half EndFraction P x squared. Px2
k = k equals StartFraction 2 P Over x squared EndFraction.
k = k equals StartFraction P Over 2 x squared EndFraction.

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

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.