The mean score is obtain by (sum of scores) ÷ (how many scores there are)
Class A:
Sum of scores = 60 + 68 + 70 + 75 + 84 + 86 + 90 + 91 + 92 + 94 + 94 + 96 + 100 + 100 = 1200
There are 14 scores in total
Mean scores of class A = 1200÷14 = 85.7
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Sum of scores of class B = 60 + 60 + 70 + 71 + 73 + 73 + 75 + 76 + 77 + 84 + 85 + 86 + 91 + 92 = 1073
Number of scores of class B = 14
Mean scores of class B = 1073÷14 = 76.6
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Class A has the highest mean score
It depends on how many slices the pizzas are cut into. Usually a pizza is cut into 8 slices. If there are 8 friends and 16 slices that means each friend gets 2 peices.
If you round 23.19 to the nearest whole number you get 23 and if you round 13.7 you get 13. 13+23 is 33. The real numbers are 23.19 and 13.7, add them together and you get 36.89. The exact sum is 36.89 (:
Answer:
The equation 
has roots –2 and 1/5.
Hence, the option 'a' is the correct answer.
Step-by-step explanation:
Checking the equation
putting x = -2 in the equation
L.H.S=R.H.S
putting x = 1/5 in the equation
L.H.S=R.H.S
As putting x = -2 and x = 1/5 satisfy the equation.
Therefore, the equation has roots –2 and 1/5.
Hence, the option 'a' is the correct answer.
