Marcus is planning a birthday trip

Mathematics

1 answer:

nikdorinn [45]4 years ago

5 0

Answer:

we the bus cost 200$ per person with 50 seats meaning 50 people can attend at a cost of $10,000

Step-by-step explanation:

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Use order of operations to solve: 4(12*6-4^2)+9

Dominik [7]

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1. There are currently 1215 people living in a town. The population of the town is expected to double every 7 years. Find the ex

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Step-by-step explanation:

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jenyasd209 [6]

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2 years ago

a motorboat travels 305km in 5 hours going upstream and 651km in 7 hours going downstream. What is the rate of the boat in still

Ghella [55]

Recall your d = rt, distance = rate * time.

b = speed rate of the boat.

c = speed rate of the current.

keeping in mind that, as the boat goes Upstream, against the current, it's speed is not "b", but is really " b - c ", because the current is subtracting speed from it.

likewise, when the boat is going Downstream, because is going with the current, is really going faster at " b + c ".

$\bf \begin{array}{lccclll}
&\stackrel{km}{distance}&\stackrel{kmh}{rate}&\stackrel{hours}{time}\\
&------&------&------\\
Upstream&305&b-c&5\\
Downstream&651&b+c&7
\end{array}
\\\\\\
\begin{cases}
305=(b-c)(5)\implies 61=b-c\implies 61+c=\boxed{b}\\
651=(b+c)(7)\implies 93=b+c\\
----------------------\\
93=\boxed{61+c}+c
\end{cases}
\\\\\\
93=61+2c\implies 32=2c\implies \cfrac{32}{2}=c\implies 16=c$

what is the speed of the boat? well, 61 + c = b.

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Triss [41]

Answer:

5:7

5/7

5 to 7

10:14 --> 10x2=20 14x2=28

20:28 --> 20x2=40 28x2=56

40:56

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3 years ago