Answer
358
Step-by-step explanation: you dont need one im correct
Answer:
20 glasses a day
Step-by-step explanation:
2.5litres equals 2500millilitres
2500÷125=20
Answer: 14 new users are added per second
Step-by-step explanation:
1,200,000/24 = 50000
50000/60 = 833.333333333
833.333333333/60 = 13.8888888889
then round because it said on average
so if we round 13.8888888889 we get 14
so on average 14 new users are added per second.
Answer:
12.3
Step-by-step explanation:
Step 1
We find the mean
The data list shows the scores of ten students in Mr. Smith's math class. 61, 67, 81, 83, 87, 88, 89, 90, 98, 100
Mean = Sum of terms/Number of terms
Number of terms = 10
Mean = 61 + 67 + 81 + 83 + 87 + 88 + 89 + 90 + 98 + 100/10
Mean = 844/10
Mean = 84.4
Step 2
Standard deviation
The formula for sample standard deviation =
√(x - Mean)²/n - 1
= √[(61 - 84.4)² + (67 - 84.4)² + (81 - 84.4)² + (83 - 84.4)² + (87 - 84.4)² + (88 - 84.4)² + (89 - 84.4)² + (90 - 84.4)² + (98 - 84.4)² + (100 - 84.4)²]/10 - 1
=√ 547.56 + 302.76 + 11.56 + 1.96 + 6.76 + 12.96 + 21.16 + 31.36 + 184.96 + 243.36/10 - 1
= √1364.4/9
= √151.6
= 12.31259518
Approximately to the nearest tenth = 12.3
The standard deviation = 12.3
Hello from MrBillDoesMath!
Answer:
x = 11
Discussion:
Line KHF has 180 degrees so
(11x + 4) + angle GHF = 180 =>
angle GHF = 180 - (11x + 4) =>
angle GHF = 176 - 11x (*)
Triangle GHF has 180 degrees =>
60 + (6x-1) + angle GHF = 180
Substituting the value of angle GHF from (*) above gives
60 + (6x -1) + (176 -11x) = 180 =>
(60 + 176 -1) + (6x - 11x) = 180 =>
(235) + ( -5x ) = 180 => subtract 235 from both sides
-5x = 180 - 235 =>
-5x = -55 => divide both sides by 5
x = 55/5 = 11
Thank you,
MrB
