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NikAS [45]
2 years ago
10

A car travels 90 miles in 1.5 hours. at this rate, how many miles can it travel in 4 hours?

Mathematics
1 answer:
Bad White [126]2 years ago
4 0
(90 * 4) ÷ 1.5 = 240 miles in 4 hours
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Step-by-step explanation:

The diagonals of a rhombus bisect opposite angles.

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Let x = the length of the longer diagonal

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Using the law of cosines we get

x^{2} = 34^{2} + 34^{2} -2(34)(34) cos 138\\         = 1156 + 1156 - 2312 cos 138\\         = 4030.150837...\\x = \sqrt{4030.150837} = 63.48x^{2} = 34^{2} + 34^{2} -2(34)(34)cos 138\\         = 1156 + 1156 - 2312 cos 138\\         = 4030.1508...\\     x = \sqrt{4030.1508} \\          =  63.48x^2 = 34^2 + 34^2 - 2(34)(34) cos 138

      = 1156 + 1156 - 2312 c0s 138

      = 4030.1508...

x = sq rt 4030.1508...

  =  63.5

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