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UNO [17]
2 years ago
14

Estimate a 15 tip on a restaurant bill of $24.55

Mathematics
2 answers:
denis23 [38]2 years ago
6 0

Answer:

39.55

Step-by-step explanation:

24.99+15=39.55

That is how you get your answer :)

Harlamova29_29 [7]2 years ago
3 0

Answer:

1.89

Step-by-step explanation:

.15 x 24.55=1.89

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Write a rule for the nth term of the sequence. Then find a20. Assume the first termis a₁. 86, 79, 72, 65…
hodyreva [135]

Answer:

an = a(n-1) - 7

Step-by-step explanation:

the second term is smaller than the first term 7.

a20 = a19 - 7

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=> a20 = (a18 - 7) - 7

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5 0
2 years ago
What value, written as a decimal, should Lena use as the common ratio?
inn [45]

Answer:

an=1*2.5^(n-1)

=2.5^(n-1)

Step-by-step explanation:

Complete question below:

What value, written as a decimal, should Lena use as the common ratio? Lena is asked to write an explicit formula for the graphed geometric sequence. On a coordinate plane, 3 points are plotted. The points are (1, 1), (2, 2.5), (3, 6.25).

Solution

Point (1, 1), (2, 2.5), (3, 6.25).

a=1

ar=2.5

ar^2=6.25

From ar and ar^2

r=6.25/2.5

=2.5

r=2.5

an=ar^(n-1)

Therefore, the explicit formula is

an=1*2.5^(n-1)

=2.5^(n-1)

7 0
2 years ago
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