Mathematics, 19.10.2019 06:10 morgannwaldrupp
1. does the function show a direct linear variation, quadratic variation, or inverse variation? explain.
a. f (x) + 1/8 x^2
b. xy = 9
c. p (x) = x/11
2. the amount of time, t, miranda spends cross-country skiing varies directly with the number of miles, m, she skis. suppose miranda skis 2 mi in 0.5 h. a. write a direct variation equation relating this information. b. use your direct variation equation from part a to determine how much time it takes miranda to ski 5.2 mi.
3. the length, d, of a violin string varies inversely as the frequency, f, of its vibrations (cycles per second). suppose it is known that a 16-in.-long violin string vibrates 320 cycles per second. a. write an inverse variation equation modeling this information. b. use your inverse variation equation from part a to determine the frequency of an 8-in.-long violin string.
Answers: 1
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The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.
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Lorne subtracted 6x3 – 2x + 3 from –3x3 + 5x2 + 4x – 7. use the drop-down menus to identify the steps lorne used to find the difference.
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Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?
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1. does the function show a direct linear variation, quadratic variation, or inverse variation? exp...
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