1) complete the following items dealing with sets.

if set a = {3, 4, 7, 9} and set b = {8, 9, 10, 11}, list the elements in numerical order for

a b = {}

a b = {_}

2)if set a = {3, 4, 7, 9}, set b = {8, 9, 10, 11}, and set c = {4, 9, 11, 13, 15},

list the elements in numerical for a (b u c) = {}

3) if set a = {3, 4, 7, 9} and if set d = {9, 4, 3, 7}, a = d.

true or false

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.

is this part of a question or something