Kareem cannot decide which of two washing machines to buy. the selling price of each is $550. the first is marked down by 30%. the second is marked down by 20% with an additional 10% off. find the sale price of each washing machine. use pencil and paper. explain why kareem should buy the first washing machine rather than the second if the machines are the same except for the selling price. (round to the nearest dollar as needed.)

correct

step-by-step explanation:

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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