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Colt1911 [192]
3 years ago
15

It takes Lucas 3 hours to cycle from his home to his friends village but if travels 5 mph slower, it will take him 1.5 hours lon

ger. How far is the friends village from Lucas’s house
Mathematics
2 answers:
sergey [27]3 years ago
8 0

Answer:

Distance=45\ miles

Step-by-step explanation:

Let\ distance\ between\ Lucas\ home\ to\ friends\ village=d\\\\Let\ speed\ of\ Lucas's\ cycle=v\\\\Time\ taken=3\ hours\\\\distance=velocity\times time\\\\d=v\times 3\\\\d=3v

Now\ if\ speed\ is\ 5mph\ slower\ \Rightarrow\ speed=v-5\\\\Time\ taken=3+1.5=4.5\\\\distance=velocity\times time\\\\d=(v-5)\times 4.5=4.5v-22.5\\\\d=4.5v-22.5

d=3v...................eq(1)\\\\d=4.5v-22.5.....eq(2)\\\\1.5\times eq(1)-eq(2)\\\\1.5d-d=1.4\times 3v-4.5v+22.5\\\\0.5d=4.5v-4.5v+22.5\\\\0.5d=22.5\\\\d=\frac{22.5}{0.5}\\\\d=45\ miles

SpyIntel [72]3 years ago
4 0

Answer:

dunno sorry

Step-by-step explanation:

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3x - y = 3
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We need to solve 3x - y = 3 for y

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Substitute 3x -3 for y in -x+y=3

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As always, I am here to help!


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How much cardboard is needed to make the tissue box above? Square inches 8 3 3
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The amount of cardboard needed to make a cuboid box of dimensions 8 inch, 3 inches and 3 inches is 114 sq. inches.

<h3>What is the surface area of cuboid?</h3>

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For this case, tissue box is almost cuboid shaped.

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