Your test average is 86 after taking three tests. You remember that two of your scores were 88 and 83. What was your score on the third test? show your work.
86 * 3 = 258
258 - 88 - 83 = ?
Simplify the expression.
2x³*3x²*2y
2x³*3x²*2y
To find out the score on the third test, we can use the formula for average:
Average = Sum of all scores / Number of scores
In this case, we have three scores and we know the average is 86. So, we can set up the equation as follows:
86 = (88 + 83 + x) / 3
We plug in the known scores for the first two tests (88 and 83), and let x represent the score on the third test.
Now we can solve for x:
86 * 3 = 171 + x
258 = 171 + x
x = 258 - 171
x = 87
Therefore, the score on the third test is 87.
add up the total points...
88+83+x = 3*86