Emily spends a winter day recording the temperature once every three hours for science class. At 9 am, the temperature was -4.7°F. Between 9am and noon, the temperature increased by 17.4°F. Between noon and 3pm, the temperature dropped 8.9°F. Between 3pm and 6pm, the temperature decreased by 15.3°F. What was the temperature at 6pm?

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

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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:

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute:

step-by-step explanation:

i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2