$a^2x+(a-8)=(a+8)x\\\\(a+8)x=a^2x+(a-8)\ \ \ \ |subtract\ a^2x\ from\ both\ sides\\\\(a+8)x-a^2x=a-8\\\\(a+8-a^2)x=a-8\ \ \ \ |divide\ both\ sides\ by\ (a+8-a^2)\\\\\huge\boxed{x=\frac{a-8}{a+8-a^2}}\to\huge\boxed{x=\frac{8-x}{a^2-a-8}}$

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2 years ago

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A scuba diver dove from the surface of the ocean to an elevation of −49 9/10 feet at a rate of −9.5 feet per minute. After spend

laila [671]

Answer:

Rate of change = 4,06 f/min

Step-by-step explanation:

The ascendent length 28 9/10 = 289/ 10

The time for that ascendent maneuver is total time 17 1/8 minutes - spended time in the elevation 10 minutes, then

17 1/8 = 137/8

137/8 - 10 = ( 137 - 80 ) /8 = 57/8 minutes

The rate of change in the diver´s elevation is

289 / 10 / 57/8

Rate of change = 289*8/ 57*10

Rate of change = 2312 / 570 ft/min

Rate of change = 4,06 f/min

7 0

2 years ago