John and Melanie are designing a science experiment for the school science fair. Their experiment requires a large amount of copper wire. They need 22 spools of copper wire that each contains 31 meters of wire. How many kilometers of wire do John and Melanie need for their experiment? Round your answer to the nearest tenth of kilometers. (Hint: 1 kilometer = 1000 meter)

by definition, an arc subtended by a central angle of some given measure has the same measure. so .

1696 hundred thousand

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answer: it's d

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hello,

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

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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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