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Maru [420]
3 years ago
14

If a boat traveled 27 miles in 2 hours . At this rate how many miles will the boat travel in 1/2 hour?

Mathematics
1 answer:
ozzi3 years ago
4 0

The boat traveled 6.75 miles in half an hour. You get this by dividing 27 by 4 (because there is 4 half hour segments in 2 hours).

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10p-2(3p-6)=4(3p-6)-8p
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Answer:

undefined / no solution

Step-by-step explanation:

10p - 2(3p-6) = 4(3p-6) - 8p

10p - 6p - 12 = 12p - 24 - 8p

4p - 12 = 4p - 24

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4 0
2 years ago
Find cos(2theta) if cos(theta)= 3/4
yuradex [85]
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6 0
3 years ago
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zepelin [54]

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( Sin( 20 ) / Cos( 20 ) ) + 4 Sin( 20 ) =

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Sin( 20 ) + 2 × Sin( 40 ) / Cos( 20 ) =

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Sin( 20 ) + 2Cos( 50 ) / Cos ( 20 ) =

Sin( 20 ) + 2Cos( 20 + 30 ) / Cos( 20 ) =

________________________________

2 × Cos( 30 + 20 ) =

2 × [ Cos(30).Cos(20) - Sin(30).Sin(20) ] =

2 × [ √3/2 × Cos(20) - 1/2 × Sin(20) ] =

√3 Cos(20) - Sin(20)

_________________________________

Sin( 20 ) + 2Cos ( 20 + 30 ) / Cos( 20 ) =

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0 + √3 Cos(20) / Cos(20) =

√3 Cos(20) / Cos(20) =

Cos(20) simplifies from the numerator and denominator of fraction

√3 × 1 / 1 =

√3

And we're done ....

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inna [77]
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