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pav-90 [236]
3 years ago
14

Debra purchased a prepaid phone card for $30. Long distance calls cost 16 cents a minute using this card. Debra used her card on

ly once to make a long
distance call. If the remaining credit on her card is $22.48, how many minutes did her call last?
Mathematics
1 answer:
miv72 [106K]3 years ago
7 0

The answer is 47 minutes.

You basically imagine this: Debra has a phone card for $30. She used x minutes every 16 cents. You end up with $22.48.

30 - (0.16x) = 22.48

You can basically graph that equation and the x-intercept will show you your answer. x = 47

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Degree is defined as number of incidents to vertex.<br>Select one:<br> True<br>False​
alexandr402 [8]

Answer:

The answer is : True

Step-by-step explanation:

In graph theory, the degree of a vertex of a graph is the number of edges that are incident on the vertex, and in a multigraph, loops are counted twice.

4 0
3 years ago
What is the domain of f(x)?
Varvara68 [4.7K]

Answer:

Step-by-step explanation:Domain is the set of x values in which the function exists. Range is the set of y values in which the function exists. f(x) = 8 / (x + 9) Since the denominator cannot be zero, we set the denominator equal to zero.

7 0
3 years ago
Nola made the model to show multiplying a fraction by a fraction. Which multiplication sentence does the model show?
zloy xaker [14]

Answer:

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Step-by-step explanation:

In this question the graph file is missing which is defined in the attachment section please find it.

Let the 18 square boxes are available, 12 of those are in color.

If published in part, it will be

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4 0
3 years ago
A human hair has width of about 6.5 x 10^-5 meter. What is this width written in standard notation
AnnyKZ [126]

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0.000065 m

Step-by-step explanation:

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Hope this helps

8 0
2 years ago
PLEASE HELP ME!! THANK YOU!!
Alik [6]

Answer:

y \leq 4,

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Step-by-step explanation:

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6 0
3 years ago
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