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Korolek [52]
3 years ago
8

Kylie ate lunch at a restaurant. The bill came to $74.60. If she left a 20% tip, what was the

Mathematics
2 answers:
docker41 [41]3 years ago
7 0

Answer:

Her total cost = $89.52

Step-by-step explanation:

bill = $74.60

Now,

tip = (20/100)×74.60

= 74.60/5

= $ 14.92

Her total cost = bill + tip

= 74.60 + 14.92

= $89.52

IRINA_888 [86]3 years ago
3 0

Answer:

total is <u>89.52</u>

Step-by-step explanation:

20% >> .20

.20 * 74.60 = <u>14.92</u>

14.92 + 74.60 = <u>89.52</u>

Hope it Helps!

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Each year for 4 years, a farmer increased the number of trees in a certain orchard by of the number of trees in the orchard the
Neko [114]

Answer:

The number of trees at the begging of the 4-year period was 2560.

Step-by-step explanation:

Let’s say that x is number of trees at the begging of the first year, we know that for four years the number of trees were incised by 1/4 of the number of trees of the preceding year, so at the end of the first year the number of trees wasx+\frac{1}{4} x=\frac{5}{4} x, and for the next three years we have that

                             Start                                          End

Second year     \frac{5}{4}x --------------   \frac{5}{4}x+\frac{1}{4}(\frac{5}{4}x) =\frac{5}{4}x+ \frac{5}{16}x=\frac{25}{16}x=(\frac{5}{4} )^{2}x

Third year    (\frac{5}{4} )^{2}x-------------(\frac{5}{4})^{2}x+\frac{1}{4}((\frac{5}{4})^{2}x) =(\frac{5}{4})^{2}x+\frac{5^{2} }{4^{3} } x=(\frac{5}{4})^{3}x

Fourth year (\frac{5}{4})^{3}x--------------(\frac{5}{4})^{3}x+\frac{1}{4}((\frac{5}{4})^{3}x) =(\frac{5}{4})^{3}x+\frac{5^{3} }{4^{4} } x=(\frac{5}{4})^{4}x.

So  the formula to calculate the number of trees in the fourth year  is  

(\frac{5}{4} )^{4} x, we know that all of the trees thrived and there were 6250 at the end of 4 year period, then  

6250=(\frac{5}{4} )^{4}x⇒x=\frac{6250*4^{4} }{5^{4} }= \frac{10*5^{4}*4^{4} }{5^{4} }=2560.

Therefore the number of trees at the begging of the 4-year period was 2560.  

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3 years ago
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Step-by-step explanation:

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Let n = 30

We are actually looking for a_30.

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