Answer:
I . class width is 3
ii. Class midpoints are 33,36,39,42,45,48,51.
iii. Class boundaries are: 31.5-34.5, 34.5-37.5, 37.5-40.5, 40.5-43.5, 43.5-46.5, 46.5-49.5, 49.5-52.5
Step-by-step explanation:
I. The class width is the difference between upper class boundary and lower class boundary.
ii. Class midpoints is the summation of upper and lower class limits, divided by 2.
iii. Class boundaries is the subtraction of 0.5 from the lower classe limits and the addition of 0.5 to upper class limits.
Answer:
y = 2
Step-by-step explanation:
Rearrange
2y = 7 - 3
2y = 4
make y on its own
y = 2
10:24 because if you add up the amount of the books no matter what the genre is you get 24.There are 10 mystery books and it asks for the ratio of mystery books to the total of books so it would be 10:24
Well the answer for that question would be a greater number
Percent means parts out of 100
x%=x/100
'of' means mulitply
60 is what percent of 10
60=x% times 10
60=x/100 times 10
60=10x/100
60=x/10
multiply both sides by 10
600=x
60 cartons is 600% of 10
