In a Mathematics test, there are 10 multiple choice questions 2 marks will be awarded for each correct answer, while 1 mark will be deducted for each wrong answer. If Peter answers all the questions in the test and his test result is 8 marks, how many correct answers has he got in the test? (Algebraic Equations in One unknown)

7 marks out of ten

or

14 marks out of 20

Step-by-step explanation:

If they are 10 questions

Peter gets 8 correct

2 marks will be given for each right answer

8 right answers*2marks

= 16 marks

1 mark will be deducted for each wrong answer

He missed 2 questions

16marks-2marks

Peter got 14 marks but they are only 10 questions

So fully he needs to divide the marks by 2 to get it under 10

14/2

Peter would get either

14 marks out of 20

or

7 marks out of ten

i dont know men

step-by-step explanation:

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.