Your scores on the first four math tests were 75, 88, 82, and 90. What is your mean
score on the first four tests? Round your answer to the nearest whole number.

84

Step-by-step explanation: 75+88+82+90=335/4=83.75

Step-by-step explanation:

To find the mean, you need to add all values together, then divide by the number of terms (in this case, 4):

Round to the nearest whole number:

Done.

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

7.3

step-by-step explanation: