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Maru [420]
3 years ago
13

Jake set up a study schedule. The plan called for him to study 1/4 hour, 5/8 hour and 1 hour on Monday Tuesday and Wednesday in

that order if he continues with this pattern how long will he study on Friday
Mathematics
2 answers:
Ludmilka [50]3 years ago
8 0
Each day his study time is increasing. Find a common denominator, in this case 8

1/4 = 2/8
5/8 = 5/8
1 = 8/8

So he went from

2/8 to 5/8 to 8/8 which is an increase of 3/8 each day. If this pattern continues Thursday would be 11/8 and Friday 14/8.

14/8 = 1 6/8 = 1 3/4 hours

(an hour and 45 minutes)
vazorg [7]3 years ago
3 0
2 hours and 6/8 hour

Im bad at explaining just use your fingers and think REALLY REALLY HARD :-)
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Answer:

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Step-by-step explanation:

The question is not properly written. This is the correct question:

If sina×tan(a) = 1/2, find cosa

According to trigonometry identity;

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sin²a/cos a = 1/2

(1-cos²a)/cosa = 1/2

Cross multiply

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2cos²a + cos a - 2 = 0

Let P = cos a

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P = -1 ±√1-4(2(2)/2(2)

P =  -1 ±√1+16/4

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P = -1±4.12/4

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P = -5.12/4 and 3.12/4

P = -1.28 and 0.78

Since P = cos a

<em>Hence cos a = -1.28 and 0.78</em>

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