A question paper is made up of twelve questions. A student attempted only 25% of the questions, how many questions were
left untouched?

9

Step-by-step explanation:

25%=1/4

1/4 of 12 = 3

you can get this by multiplying 1/4*12=3

and then substract: 12-3 =9

answer: 12

step-by-step explanation:

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,