The mean mark got by 6 pupil's in a cat is 75.5 of them scored 83 73 71 67 and 69. what was the score of the sixth pupil?.what was the modal mark

score if the sixth pupil is 90

Step-by-step explanation:

Mean mark-75.5

6pupil

83+73+71+67+69+x= 75.5

363+x=75.5×6

×=453-363

×=90

correct answer is infinitely many solutions

step-by-step explanation:

2(2x + 3) = -4 + 2(2x + 5)

solving the above equation:

4x + 6 = -4 +4x +10

combining like terms

4x -4x = -4+10-6

0=0

since both sides are 0=0, we end up into true statement it means it has infinite many solutions.

so correct answer is infinitely many solutions