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MrRissso [65]
3 years ago
6

Estimate a 15% tip on a dinner bill of 68.47 by first rounding the bill amount to the nearest ten dollars. please help thanks

Mathematics
1 answer:
Inessa05 [86]3 years ago
3 0
$10.50
Round to $70
10% Of 70= $7
5% of 70 = $3.50
So, 15% = $10.50
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mina [271]
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3 years ago
State the domain and range of the function:<br>domain:<br>range:​
agasfer [191]

Answer:

Domain: [-5, 1)

Range: (5, 1]

General Formulas and Concepts:

<u>Algebra I</u>

  • Domain is the set of x-values that can be inputted into function f(x)
  • Range is the set of y-values that are outputted by function f(x)

Step-by-step explanation:

According to the graph, our x-values span from -5 to 1. Since -5 is a closed dot, it is inclusive in the domain. Since -1 is an open dot, it is exclusive in the domain:

[-5, 1)

According to the graph, our x-values span from -5 to 1. Since -5 is an open dot, it is exclusive in the range. Since 1 is a closed dot dot, it is exclusive in the range:

(5, 1]

7 0
3 years ago
The director of the library believes that 14% of the library's collection is checked out. If the director is right, what is the
Ksivusya [100]

Answer: 0.2643

Step-by-step explanation:

Let p be the population proportion and \hat{p} be the sample proportion .

As per given question , we have

p=0.14\\\\ \hat{p}=0.13\\\\ n=478

z-score : \dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

z=\dfrac{0.13-0.14}{\sqrt{\dfrac{0.14(1-0.14)}{478}}}\\\\=-0.630087269176\approx-0.63

The required probability ( using z-table ):-

P(z

Hence, the probability that the proportion of books checked out in a sample of 478 books would be less than 13% = 0.2643

5 0
4 years ago
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4 years ago
Which is the graph of f(x)=2(3)^x
boyakko [2]

Answer:

First graph

Step-by-step explanation:

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Looking at the first graph, we see that (1, 6) is on the graph.  Does this agree with f(x) = 2(3)^x evaluated at x = 1?  Is f(1) = 2(3)^1 = 6?  YES.  So the first graph is the correct one for f(x) = 2(3)^x.

8 0
4 years ago
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