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Virty [35]
3 years ago
7

Rachel purchased a prepaid phone card for $30. Long distance calls cost 6 cents a minute using this card. Rachel used her card o

nly once to make a long distance call. If the remaining credit on her card is $28.44, how many minutes did her call last
Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
8 0

Answer: her call lasted for 26 minutes.

Step-by-step explanation:

Let x represent the number of minutes for which her call lasted.

Rachel purchased a prepaid phone card for $30. Long distance calls cost 6 cents a minute using this card. Converting 6 cents to dollars, it becomes 6/100 = $0.06

This means that the cost of x minutes of long distance call is

0.06 × x = $0.06x.

If the remaining credit on her card is $28.44, it means that

0.06x + 28.44 = 30

0.06x = 30 - 28.44

0.06x = 1.56

x = 1.56/0.06

x = 26

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the last one is the correct answer


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4 0
3 years ago
Łatwy ułamek <br> 36/7-3/5-4/10
Free_Kalibri [48]

Answer:

4 \frac{1}{7}

Step-by-step explanation:

\frac{36}{7}  -  \frac{ 3}{5}  -  \frac{4}{10}  \\  \\ lcm  \: \: is \:  \: 70 \\  \\  \frac{360 - 42 - 28}{70}  \\  =  \frac{290}{70}  \\  =  \frac{29}{7}  \\  = 4 \frac{1}{7}

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5 0
3 years ago
Find the MAD of the data below:<br><br>52. 47. 65<br>43. 51<br>​
djyliett [7]

Answer:

The answer is 5.52

6 0
3 years ago
Read 2 more answers
The graph of F(x) shown below resembles the graph of G(x) = x ^ 2 but it has been changed somewhat . Which of the following coul
sukhopar [10]

Answer:

f(x) = 3x^{2} + 2

Step-by-step explanation:

Given G(x) = x^{2}

As we can see, the graph of f(x) is 2 units above the graphof g(x) in vertical (vertical shift)

=> f(x) = ax^{2} + 2

As you can see, the graph of f(x) is stretched vertically by a dilation factor of 3

and there is no reflection, so a= 3

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5 0
3 years ago
Y+5=x+3 in standard form
podryga [215]

Answer: x-y=2

Step-by-step explanation:

y+5=x+3; move variable (x) to the left-hand side and change the sign.

y-x+5=3; move the constant to the right-hand side & change the sign

y+x=3-5; reorder the terms

-x+y=3-5; calculate

-x+y=-2; change the signs on both sides

x-y=2 is your answer! hope this helps!

7 0
3 years ago
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