Question No.1 ) In an examination 150 students secured first class in English and mathematics. 115 students secured first class in mathematics . How many students secured first class in English only ??

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Let, No of students who secured first class in Mathematics =n(M)=115

No of students who secured first class in English =n(E)

No of students who secured first class in English or Mathematics=n(E∪M)=150

No of students who secured first class in English only=n(E−M)

A.T.Q,

n(E−M)=n(E∪M)−n(M)=150−115=35

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the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3

2x + 8

step-by-step explanation: