45 because the multiples of 9 are 9,18,27,36,45 and 45 is the first one that is also a multiple of 5
This is actually an easy one.
4 day= 24 hours X 4 = 96 hrs.
4560 = 96 hrs.
4560/96 = per hr.
47.5 watts per hr.
Since 1 day = 24 hrs, 47.5 X 24 = 1140 Watts per day.
See? Simple and easy if you solve parts at a time!
I don't entirely know what you mean by 'rate of change', but I'll assume that you mean slope.
0, -4 and 3, 2 are on the coordinate plane.
From 0, we go over three to reach 3.
From -4, we go up six to reach 2.
Since slope is in essence, rise/run, we have the following fraction:
6/3, which can be re-written as 2/1 or just 2.
Hope this helps!
Use this chart, every way it can add up to ten: i.e. 5,5 6,4...
