Let n be the first integer and n + 1 the next consecutive integer
5n + (n + 1)
6n + 1
A 90 degree rotation about its center
Answer:
Amount of B used = 276.6 millimeters
Step-by-step explanation:
A = A millimeters
B = A + 400 millimeters
Hence
Taking an overall balance
(0.16 x A) + (0.2)(A+400) = 476
0.16A + 0.2A + 80 = 476
A = 1100 millimeters
B = 1100 + 400 = 1500 millimeters
Hence using direct proportion
2600 --------------------476
1500 ---------------------X
X = 276.61538
Amount of B used = 276.6 millimeters
To answer this, determine the change in water level over 2 1/4 months: it's -11.5 inches. Next, divide this change by the time involved:
-11.5 inches
------------------- = -5 1/9 inches per month (answer)
2.25 months
