Let a and b be sets. prove an b=āub. recall that a stands for the complement of the set a. note: in order to prove equality of sets, you need to prove inclusion in both directions. if you wish, you can illustrate the argument using a venn diagram but a diagram by itself is not sufficient. you are expected to give a logical argument that proves both inclusions.

its a straight line parallel to the time axis

a 270° rotation about point p says on e d g e n u it y (had to space it out because it says it's a misspelling so i couldn't submit it

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: