The fee for taking a cab is F = Rm +b where F = the fee, R = the rate per mile, m = the miles traveled, and b = the boarding fee. A passenger paid a fee of $46.00 for a cab. If the rate was $4 and the boarding fee was $2, how many miles did she travel? Write an equation and explain how you used it to find out how many miles were traveled.

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.

The perimeter of △cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.