It is a binomial expression, the sum of two squares.
_____
Roots of it are imaginary: b = ±(5/3)i.
Answer:
2 gallons
Step-by-step explanation:
You have to find the pattern of adding and draining water for 15 days. To get there you need to subtract 2 and add 1 but keep the negative/positives the same i.e. (this is for the 10ths of gallons)
13-2=11
11+1=10
keeping the pattern for 15 days:
+13, 11,+12,-10,+11,-9,+10,-8,+9,-7,+8,-6,+7,-5,+6 = 20 (10ths of gallons)
20/10 = 2
Answer:
570 feet above seal level
Step-by-step explanation:
The hiker was at 450 ft above sea level. He ascended 120 feet toward the top of the mountain (or goes up). 450+120 = 570. Therefore his new position is 570 feet above sea level!