Answer:
387 contains 80 and 8 x 10 = 80
Answer:
3 + is irrational, as is an irrational number in itself, not being able to change into a fraction as it is a non-terminated number.
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First let's define variables:
r: reading
s: skimming
We write the system of equations that adapts to the problem:
r + s = 275
(15/10) r + (10/15) s = 355
We solve the system of equations:
r = 206
s = 69
Note: see attached image for system solution.
Answer:
Jayden had to skim 69 pages through
So all positive integers is the domain (the number you can use)
and the range (the numbers you get when you put the numbers in the domain in) is all positive integers more than 2