Pl apexf(x)=3x + 1g(x)=x^2 - 6find (f-g)(x)a.3x^2 - 17b. x^2- 3x- 7c.-x^2 + 3x + 7d.-x2 + 3x - 5

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the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

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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: