The average test score of three students in a class is 81 percentage points. if one student's score goes up by 2 percentage points, one student's score goes up by 4 percentage points, and the other student's score remains the same, what will the new average test score be

To the find average of the test scores, we need to find the mean.

To find the mean, all we need to do is add up all the numbers and then divide the answer by how many numbers there are

81 + 83 + 85 = 249

249 ÷ 3 = 83

Therefore, the new average is 83

Hope this helps

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)