Jelani is in a walking race at his school. In the first 20 seconds, he walks 60 meters. In the next 30 seconds, he walks 60 meters. In the
next 10 seconds, he walks 35 meters. In the last 40 seconds, he walks
80 meters.
a. Describe how Jelani's walking rate changes during the race.
b. What would a graph of Jelani's walking race look like?

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hi! i think the answer is 1/2 : )

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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step-by-step explanation:

answer: i wpould go with c

step-by-step explanation:

the radius is 2 times the diameter.

step-by-step explanation: