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SVETLANKA909090 [29]
3 years ago
10

Please help!, thanks!​

Mathematics
1 answer:
salantis [7]3 years ago
6 0

Answer:

53.47$

Step-by-step explanation:

Find 7% of 43.45:    7/100 x 43.45= 3.0415

Add the tax to the meal price:  43.45+3.0415= 46.49

Find 15% of 46.49: 15/100 x 46.49= 6.9735

Add the tip to the total: 53.47$

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The numbers are 11 and 6.

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You’re working in the sedan section of dean’s car dealership. A customer makes a down payment of 15% on a new car that costs $13
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In the drawing below , PQ is parallel to ST. Triangle is similar to triangle TSR.
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In a survey of 500 people, 31% said they were afraid of flying. What decimal represents the number of people who said they were
Elden [556K]

Answer:

.31

Step-by-step explanation:

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500/ 5

31÷100

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6 0
3 years ago
A motorboat takes 5 hours to travel 100mi going upstream. The return trip takes 2 hours going downstream. What is the rate of th
Temka [501]
The boat went 5hours upstream, let's say it has a "still water" speed rate of "b", it went 100miles... however, going upstream is going against the current, let's say the current has a speed rate of "c"

so, when the boat was going up, it wasn't really going "b" fast, it was going " b - c " fast, because the current was eroding speed from it

now, when coming down, the return trip, well the length is the same, so the distance is also 100miles, it only took 2hrs though, because, the boat wasn't coming down  "b" fast, it was coming down " b + c " fast, because the current was adding speed to it, so it came down quicker

now, recall your d = rt, distance = rate * time

\bf \begin{array}{lccclll}
&distance&rate&time\\
&-----&-----&-----\\
upstream&100&b-c&5\\
downstream&100&b+c&2
\end{array}
\\\\\\
\begin{cases}
100=(b-c)5\\
\qquad \frac{100}{5}=b-c\\
\qquad 20=b-c\\
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\end{cases}

solve for "c", to see what's the current's speed

what's "b"?  well 20+c = b
4 0
3 years ago
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