How do you calculate average from a range?

how do you calculate range, median, mode , and mean. also how do you calculate the area of a trapezoid see I need to know th...

I just found out i made a 24 composite score on the ACT but my writing hasnt been scored, will this score be averaged in with...

If you can rate a picture 1-10 and the average rating is 8.5 based on 2 votes, what did each person vote ?

this is the question: The domain of the function f(x) = -6x+5 is {-2, 0, 4}. Find the range.

Using integrals, how do you calculate the area? When there's a slope under a slope, the area is the difference between these ...

my grade point average on my transcript is 66.96 I need that in a 0.01-4.0 average.How do I figure this out?

I keep pressing 4 times 4 and the answer comes up as 10. whats wrong with my calculator?

I have a TI - 83 Plus calculator or w/e... anyways, is there a way to type in negative exponents...? Is it the same way you d...

Nothing in specific, straightforward question. I'm applying to highschools, and was accepted into phillips exeter academy. I ...

My son is entering the 6th grade next year and needs a scientific calculator. How expensive are they and where can I find one?