Question

You score an 86 on the first of two exams. Write and solve an equation to find the score x that you need on the second exam to have a mean score of 92.

Answer 1

Answer: Equation:
`(86 + x)/(2) = 92` X = 98

Step-by-step explanation for equation:

1. The mean of anything is the sum of all numbers divided by the amount of numbers you have. Because of this, 86 + x (x being the second score) would give you the sum.

2. Then put it over two because of there are only two numbers in this data set.

3. Finally, set it equal to 92 because that is the mean score that you want to get.

Step-by-step explanation for X:

1. Multiply the entire equation by 2 to get rid of the denominator. 2(
`(86 + x)/(2) = 92`). This gives you 86 + x = 184

2. Then subtract 86 from both sides to get x by itself. This gives you X = 98

Answer 2

Good question mate!!
So you scored 86 in one exam
Let us think think that u scored some ‘x’ marks in the next exam
To have mean score of 93,
(86 + x)/2 =92
86+x = 184
x= 98
So you need 98 marks in the second exam