Question

5. It U = {xIXEN, 7210} and A = {xIXEN.24x46then (A) is () 21.6,7,8,93 (b) {1,2,3,4) (0 [2,3,4,5}(d) { }​

Answer 1

Given inequations are,

−3x+4<2x–3 where x∈N and

4x–5<12 where x∈W

Solving

−3x+4<2x−3

⇒−3x−2x<−3−4

⇒−5x<−7

⇒x>

5

7

As x∈N

The solution set P is {2,3,4,5,…}

And

4x−5<12

⇒4x<12+5

⇒4x<17

⇒x<

4

17

As x∈W

The solution set Q is {0,1,2,3,4}

Therefore,

(i) P∩Q={2,3,4}

(ii) Q−P={0,1}

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Answer 2

Step-by-step explanation:

airliner are 7.5 km from each other, at the same altitude. From the observation tower, the two aircraft are separated by an angle of 68 ° If the jet airliner is 5.2 km from the observation tower, how