You must equal zero, so that way 2x can equal 2x
Answer:
467 000 000
Step-by-step explanation:
4.67e-8 is rewritten as 4.67 x 10^-8.
Negative -> decimal with lots of places, Positive -> big, big number
Move the decimal place right 8 times so you end up with a small decimal.
4.67 -> 467000000
Your answer would be 43.6
The the mode is the value that shows up most often. In order the find mode put the numbers in order from least to greatest and count how many times each number shows up.
For this data set list the mode is 11 because that is the number that shows up most often.
Note that if their isn't number in the list that shows up most often then there is no mode for the list.
Answer:
mean score of class B = 1778/25 = 71.12
Step-by-step explanation:
This was your question : Class A has 12 pupils and class B has 25 pupils. Both classes sit the same maths test. The mean score for class A is 80. The mean score for both classes is 74. What is the mean score (rounded to 2 DP) in the maths test for class B?
mean of class A = Σfx/Σf
mean of class A = 80
Σfx = 80 × 12 = 960
Mean score for both classes = 74
where
b = Σfx of class B
960 + b/37 = 74
cross multiply
960 + b = 2738
b = 2738 - 960
b = 1778
mean score of class B = Σfx/Σf
Σfx = 1778
Σf = 25
Therefore,
1778/25 = 71.12
