An engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 120120 lb and 161161 lb. the new population of pilots has normally distributed weights with a mean of 129 lb129 lb and a standard deviation of 30.6 lb30.6 lb.

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)

eve and marks ratios are equivalent

step-by-step explanation:

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