Multiple-choice questions have a special grading rule determined by your instructor. assume that your instructor has decided to grade these questions in the following way:
if you submit an incorrect answer to a multiple-choice question with n options, you will lose 1/(n−1) of the credit for that question. just like the similar multiple-choice penalty on most standardized tests, this rule is necessary to prevent random guessing.

if a multiple-choice question has five answer choices and you submit one wrong answer before getting the question correct, how much credit will you lose for that part of the question?

The person will lose 0.25 credits.

Step-by-step explanation:

According to given condition, the deduction on wrong answer is:

Deduction = 1/(n-1)

where, n = no. of options in the question.

Therefore, if a person gives an incorrect answer to a multiple chice question which has 5 options. Then,

n = 5

and the deduction will be given as:

Deduction = 1/(5-1)

Deduction = 1/4

Deduction = 0.25 credit

The person will lose 0.25 credits.

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus