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kondor19780726 [428]
2 years ago
6

Indiana now has 8 different area codes. How many different phone numbers are available within Indiana if the numbers can repeat?

Remember that phone numbers have an area code followed by 7 digits.
Mathematics
1 answer:
Anna11 [10]2 years ago
4 0

Answer:

Well, this could turn out to be a simple permutation problem: you have ten number choices (0-9) for each digit of a phone number and repetitions are allowed. Technically, there could be as many as \begin{align*}10^{10} = 10,000,000,000\end{align*}, or 10 billion possible phone numbers.

Step-by-step explanation:

:D

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Can someone please help me solve this? <br><br> 2x+5y=-1 <br><br> -10x-25y=5
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__________

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3 years ago
In the grade 9, the ratio of girls to boys is 17:8. What percent of the grade 9 are boys?
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3 0
3 years ago
A rectangular piece of metal is 15 in longer than it is wide. Squares with sides 3 in long are cut from the four corners and the
ziro4ka [17]

Answer:

The original dimensions of the piece of metal are

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Width: 21 inches

Step-by-step explanation:

Let

x ----> the original length pf the piece of metal

y ----> the original width pf the piece of metal

we know that

x=y+15 ----> equation A

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V=LWH

we have

V=1,350\ in^3

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H=3\ in

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Solve the quadratic equation by graphing

using a graphing tool

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therefore

The original dimensions of the piece of metal are

Length: 36 inches

Width: 21 inches

5 0
3 years ago
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