Math, asked by mehakpaliwal2009, 5 hours ago

in a competition 3marks are given for correct ans and (-2)are given for every incorrect ans no marks for not attending any que ( A)nalini score(-7)marks in compitation through she got 9 correct ans how many que she attempted incorrectly​

Answers

Answered by vikram9896504122
0

Answer:

she attempted 17 que incorrectly

Step-by-step explanation:

marks for correct answer=3

marks for incorrect answer=-2

que answered correctly=9

let incorrect answers=x

A/T/Q

9(3)+x(-2)=-7

27+(-2x)=-7

-2x=-7-27

-2x=34

-x=34÷2

-x=17

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