-8 + 6 / -3 * 3
-8 + -2 * 3
-8 + -6
-14
Hey there!
35 containers of paint
We simply divide 375 by 11, and we get 34.09..., but since we can't buy .09 of a container of paint, we can only by 35 containers of paint.
Hope it helps and have a good day!
9. Square
10. Square
11. Rectangle
12. Rectangle
13. Square
14. Triangle
Explanation:
I think you may have confused parallel and perpendicular for some of the questions. Also, a cube has square sides and base, so any crossection parallel or perpendicular will also be square. I hope this is helpful!
Answer:
The complete question is:
At a university, 13% of students smoke.
a) Calculate the expected number of smokers in a random sample of 100 students from this university:
b) The university gym opens at 9 am on Saturday mornings. One Saturday morning at 8:55 am there are 27 students outside the gym waiting for it to open. Should you use the same approach from part (a) to calculate the expected number of smokers among these 27 students?
Part a is easy, because is a random sample, we can expect that just 13% of these 100 students to be smokers, and 13% of 100 is 13, so we can expect 13 of those 100 students to be smokers.
b) This time we do not have a random sample, our sample is a sample of 15 students who go to the gym in the early morning, so our sample is biased. (And we do not know if this bias is related to smoking or not, and how that relationship is), so we can't use the same approach that we used in the previous part.
8 1/3. 60×8=480. 500-480=20. 20 is 1/3 of 60.
