A researcher works on a study that has a population standard deviation of 73, a sample mean of 84.5 and a sample size of 60 The researcher is 95% confident that the interval
includes plausible values for the true mean
84.43 <3 < 84.57
84.41 << 84.59
84.31 << 84.69
84.39<< 84.61
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arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation:

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.

ome people is not even worth it to even try it in the air.

step-by-step explanation: