Atriangle has sides with lengths of 11 feet, 16 feet, and 20 feet. is it a right triangle?

It is not a right triangle because it would not work out when tested using Pythagorean’s Theorem. (Hyp^2=Opp^2 + Adj^2)

11^2+16^2=20^2

377<400

This would make it an Obtuse Triangle

Helpful Hint:

The sum of the smallest sides squared > Longest Side Squared - Acute Triangle

The sum of the smallest sides squared = Longest Side Squared - Right Triangle

The sum of the smallest sides squared < Longest Side squared - Obtuse Triangle

well the answer to that is xoxoxo

step-by-step explanation:

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: