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sveticcg [70]
2 years ago
11

When making a long distance call from a certain pay phone, the first three minutes of a call cost $3.00. afterthat, each additio

nal minute or portion of a minute of that call costs $0.45. use an inequality to find the numberof minutes one can call long distance for $8.40?
Mathematics
1 answer:
motikmotik2 years ago
4 0
3 + 0.45*M<=8,40. Notice the equal, because you may use all the money. Then, rearranging: M<=(8.40-3)/0.45= 12, so M<=12. Now, obviously time is positive, so you may end saying 0<=M<=12, with M=0 meaning no call! :)
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Is 7/3 rational or irrational
pogonyaev

Answer:

rational, yes 7/3 is rational

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3 years ago
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The average of two numbers is 41. If one of the numbers is 27, what is the other number?
nydimaria [60]

The other number if the average of two numbers is 41 and one is 27 is 55

<h3>How to calculate the average of numbers?</h3>

Average of number is also known as the mean.

Let the unknown number be "x" such that:

x +27/2 = 41

Determine the value of x

x + 27 = 2(41)
x + 27 = 82
x = 82 - 27

x = 55

Hence the other number if the average of two numbers is 41 and one is 27 is 55

Learn more on average here: brainly.com/question/25965491

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4 0
2 years ago
The histogram below shows the golf scores of some members of Club A.
irinina [24]

Answer:

25

Step-by-step explanation:

4 + 6 + 8 + 5 + 2 = 25

5 0
3 years ago
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a psychologist contends that the number of facts of a certain type that are remembered after t hours is given by the following f
laiz [17]

Answer:

At t=1, Rate of Change=-36.86

At t=10 hours, Rate of Change =-0.0088

Step-by-step explanation:

The function which describes the number of facts of a certain type which are remembered after t hours is given as:

f(t)=\frac{85t}{99t-85}

To determine the Rate of Change at the given time, we first look for the derivative of f(t).

Applying quotient rule:

f^{'}(t)=\frac{-7225}{{\left( 85 - 99\,t\right) }^{2}}

At t=1

f^{'}(1)=\frac{-7225}{(85-99)^{2}}

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At t=10 hours

f^{'}(10)=\frac{-7225}{(85-99(10))^{2}}

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4 0
3 years ago
The list below gives the location of friends who are scuba diving together.
Marianna [84]

According to the information, it can be inferred that the correct inequality is Mallory > Eva (option D).

<h3>How to identify who is closer to the surface of the water?</h3>

To identify who is closer to the surface of the water we must read the distance that each of the characters is.

In this case, the person closest to the surface is Eva, who is 5 feet from the surface.

Now we must identify which inequality corresponds to reality. In this case the inequality that is correct is:

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This inequality is correct because Mallory is further from the surface than Eva.

Learn more about inequality in: brainly.com/question/20383699

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6 0
2 years ago
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