20
15 + 5 =20 so its 5
20 and 30 are rectangular numbers (4 * 5 and 5 * 6). There are none in between them.
5.
Depending if the 5 is in the "over 20" or not. Because what you stated is unclear, it can be (5+7)/20 or 5+7/20, which is two different answers, 0.6 and 5.35.
20
The sum of -5 and 20 is 15. The distance between -5 and 20 is 25. The sum of the numbers between -5 and 20 is 180. The sum of the numbers from -5 to 20 is 195.
15 + 5 =20 so its 5
5, 10 and 15. 20 itself IS a multiple but, strictly speaking, is not between.
the difference between -5 and 5 is 10
-5
20 and 30 are rectangular numbers (4 * 5 and 5 * 6). There are none in between them.
20x5 =100 20+5=25 100+25= 125
The GCF is 5.
No. For the very simple reason that 5 yards is a measure of distance and 20 square yards is a measure of area. Distance, area - two different concepts, in different dimensional space. No conversion between the two makes sense.
5.
16