(A U B) n (A n B)
A= {1,3,7,9,10}
B= {2,5,7,8,9,10}

{7,9,10}

Step-by-step explanation:

(A U B) ∩ (A ∩ B)

(A U B): {1,3,7,9,10} U {2,5,7,8,9,10} = {1,2,3,5,7,8,9,10}

(A ∩ B): {1,3,7,9,10} ∩ {2,5,7,8,9,10} = {7,9,10}

(A U B) ∩ (A ∩ B): {1,2,3,5,7,8,9,10} ∩ {7,9,10} = {7,9,10}

21 i watched a 3 hr vid explaining it

step-by-step explanation:

du what else would it be

brainliest

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )