Simplify the expression below using order of operations. 8+(5)(+10÷2)+44 show all your work.

The first step in this problem is to solve the parentheses: (6+10/2). Divide 10 by 2 to get (6+5). Now add, and you get 11. You now have 8+(5)(4)-11+44. Next, multiply and divide, left to right. multiply 5 by4 to get 20. Now, you have 8+20-11+44. Finally, simply add and subtract: 8+20=28-11=17+44=61. Your final answer is 61. Hope this helped!

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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: