Lisa purchased a prepaid phone card for $30. Long distance calls cost 13 cents a minute using this card. Lisa used her card only once to make a long distance call. If the remaining credit on her card is $26.49, how many minutes did her call last?

Answers

Answer 1

Answer:

27minutes

Step-by-step explanation:

Firstly, let us calculate the amount spent

amount spent=30-26.49

amount spent=3.51

the expression for the total amount spent is given as

y=c-mx

let us convert 13cents to dollar= $0.13 extra charge per minute

we can see that x is the number of minutes

therefore

26.49=30-0.13x

26.49-30=-0.13x

-3.51=-0.13x

x=3.51/0.13

x=27 minutes

the last call was 27minutes


Related Questions

Which expression produces a compatible number estimate for (StartFraction 4 over 7 EndFraction) (StartFraction 3 over 8 EndFraction) (three-fifths) (StartFraction 5 over 9 EndFraction)?

Answers

Answer:

c

Step-by-step explanation:

y=4x-7 how do i identify the slope and Y intercept?​

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Answer:

The slope-intercept form is y=mx+b y = m x + b , where m is the slope and b is the y-intercept. Using the slope-intercept form, the slope is 4 .

Step-by-step explanation:

Determine if 0.828228222822228222228... is rational or irrational and give a reason for your answer.

Answers

Answer:

irrational

Step-by-step explanation:

it cannot be written as a ratio

The given decimal number is a nonterminating and non-repeating decimal it is irrational.

The given decimal number is 0.828228222822228222228...

We need to identify whether the given decimal number is rational or irrational.

What are rational numbers and irrational numbers?

Rational Numbers

The term ratio came from the word ratio which means the comparison of any two quantities and is represented in the simpler form of a fraction. A number is considered a rational number if it can be expressed in the form of a/b where both a (numerator) and b(denominator) are integers. The denominator of a rational number is a natural number(a non-zero number). Integers, fractions including mixed fractions, recurring decimals, finite decimals etc all come under the category of rational numbers.

Irrational Numbers

A number is considered an irrational number if it cannot be able to simply further to any fraction of a natural number and an integer. The decimal expansion of irrational numbers is neither finite nor recurring. Irrational numbers include surds and special numbers such as π. The most common form of an irrational number is pi (π). A surd is a non-perfect square or cube which cannot be simplified further to remove the square root or cube root.

Since the given decimal number is a nonterminating and non-repeating decimal it is irrational.

To learn more about irrational numbers visit:

https://brainly.com/question/4031928.

#SPJ2

brainliest to best answer , good luck and thanks for all the help ! ❤️

Answers

Hello. :)

So, in order to order numbers, you need to have them all in the same format. For example, in your case, half are fractions and half are decimals. If you want to order them, they all need to be either fractions or decimals.

Let's just convert them to decimals.

In order to do that, all you have to do is divide the numerator by the denominator. Do this to all of the fractions.

-3/10 = -0.3

1/2 = 0.5

Okay, so now all of our terms are in decimal form:

-0.3, 0.5, 0.3, -0.8

So let's start the Ordering process.

Begin with the negative numbers, since they are going to be the smallest.

We have -0.3 and -0.8. If they were positive, 0.8 would be larger. But, in terms of negatives, -0.8 is less than -0.3

So, we have -0.8, -0.3.

Now the positives:

0.5 and 0.3. Just looking at the decimals, you can see that 0.5 is greater than 0.3

So, from least to greatest your answer is:

-0.8, -3/10, 0.3, and 1/2

I hope this helped. :) Feel free to reply with any questions x

what is the difference between 1.28 x 10^5 and 3.2 x 10^4​

Answers

Answer:

1.92 x 10

Step-by-step explanation:

3.20-1.28=1.92

10^5-10^4=10

=1.92 x 10

Correct me if I'm wrong

A website gives the population of a European country as 16,714,683. What is this population to three significant digits

Answers

Answer: 16.7m

Step-by-step explanation:


Can someone please help me

Answers

Answer:

1/3

Step-by-step explanation:

Take two points and do the y2 - y1 over x2 - x1 method.

Which expression is equivalent to -1/5-(-3/8)

Answers

Step-by-step explanation:

[tex] - \frac{1}{5} - ( - \frac{3}{8} ) = - \frac{1}{5} + \frac{3}{8} = \frac{ - 8 + 15}{40} = \frac{7}{40} [/tex]

Write an equation of the line with a slope of −7 and y-intercept of 1.

Answers

Answer:

y=-7x+1

Step-by-step explanation:

The slope-intercept equation is y=mx+b. Where m= the slope and b= the y-intercept. So just plug in the information you know for the answer, y=-7x+1.

3. Andre and Elena are solving this system of equations:
y = 3x
y=9x – 30
- Andre's first step is to write: 3x = 9x - 30
- Elena's first step is to create a new system:
3y=9x
y = 9x - 30

Do you agree with either first step? Explain your reasoning.

Answers

Answer:

Andre is correct

Step-by-step explanation:

Andre is correct because the two equations are equal to eachother since they are both equal to y. As for Elena, they seem like they're overcomplicating it. They could do it this way, but it's unnecessary so I think that Andre is more correct because they did it the easier way.

288 miles on 12 gallons of fuel; 240 miles on 10 gallon of fuel

Answers

Answer: 1: 24 miles per gallon (mpg)

2: 24 miles per gallon (mpg)

Step-by-step explanation: PLEASE GIVE BRAINLIEST IT HELPS ALOT. THANKYOU.

Roxanne is going to build a rectangular prism out of 36 one- inch cubes. She wants the height of the rectangular prism to be 3 inches, and she wants the width to be shorter than the length. How many rectangular prisms with different dimensions can she build?

Answers

Answer:

3

Step-by-step explanation:

Since Roxanne has 36 one inch cubes, the maximum volume of rectangular prism she can have is 36 in³ = 1 in × 1 in × 36 in.

Now, if Roxanne wants a rectangular prism with height 3 inches, this implies that the area of its base is 36 in³/3 in = 12 in².

We now find all the factors of 12 = 1 × 12, 2 × 6, 3 × 4.

So, we have 3 different areas of base of rectangular prism in which the width is shorter than its length the width being the smaller dimension.

So, the different rectangular prisms in which the volume = 36 in³ in which the width is shorter than its length and has a height of 3 in is

1 × 12 × 3, 2 × 6 × 3, 3 × 4 × 3.

So we have 3 different rectangular prisms

The graph shows the distances traveled by two runners over several minutes.

A graph measuring distance and time. Two lines, labeled Runner A and Runner B, exit the origin to show that distance increases as time increase

Which runner is moving at a slower rate?



Select from the drop-down menu to correctly complete the statement.



Runner
Choose...
is moving at a slower rate.

Answers

Runner B is running at a Slower rate

i need help with 14 and 16​

Answers

Answer:

Look at step-by-step explanation.

Step-by-step explanation:

The answer to 14 is 70 dollars.

The answer to 16 is 7 miles per hour or 7mph.

The midpoint of line CD is M= (-1, -2). One endpoint is C= (2, -7). Find the coordinates of the other end point, D.

Answers

Answer:

The answer is M= (2-3)

Step-by-step explanation:

WILL MARK BRAINLIEST!!

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A) 5 5/6
B) 5 1/6
C) 5 2/3
D) 5 7/6

Answers

C???? I think, correct me if I'm wrong

Tanner is cutting a 23-inch board into 2.25-inch sections. How many whole sections will he end up with?

11
12
10
13

Answers

Answer:

10

Step-by-step explanation:

23-2.25x10.... ........................

where would 0.015 go?​

Answers

Answer:

Right after 0.05

Step-by-step explanation:

I think

At a school, 40% of the sixth-grade students said that hip-hop is their favorite kind of music. If 100 students prefer hip-hop music to any other kind of music, how many sixth-grade students are at the school in total?

Answers

Answer:

250 students

Step-by-step explanation:

Hi there !

40% ................ 100 students

100% ................... x students

x = 100×100/40 = 10000/40 = 250 students

Good luck !

Please answer ASAP!!!

Answers

Answer:

The value of AB is 24.

Step-by-step explanation:

AB is the same length as AD. AD is 24, so AB is 24.

How do you tell if an equation, table, graph, and word problem are all related to the same situation?

PLZ help me I need help on this is a grade today

Answers

You can tell if it is related to the same situation because the equation should match the table and/or graph based on the inequality or value.

-98 = 14m

112

-7

7

-112

Answers

Answer:

[tex]\boxed {m = -7}[/tex]

Step-by-step explanation:

Solve for the value of [tex]m[/tex]:

[tex]-98 = 14m[/tex]

-Switch:

[tex]14m = -98[/tex]

-Divide both sides by [tex]14[/tex]:

[tex]\frac{14m}{14} = \frac{-98}{14}[/tex]

[tex]\boxed {m = -7}[/tex]

Therefore, the value of [tex]m[/tex] is [tex]-7[/tex].

In a classroom with 45 students, there were twice as many girls as boys. How many of each were there?

Answers

Answer:

90

Step-by-step explanation:

Dialogue (sometimes spelled dialog in American English) is a written or spoken conversational exchange between two or more people, and a literary and theatrical form that depicts such an exchange.

Answer:

Girls are twice as many as the boys.

So let's assume girls to be 'x' and boys to be 'y' and adopt the simultaneous equation method to find out the answer to X and Y.

Firstly, let's us establish that: x + y = 45

Secondly, for every boy there are two girls. So,

2y = x.

We have the value for the 'x' here in the equation, so we will substitute that in the first equation:

2y + y = 45

3y = 45

y = 15

Boys are 15.

Put this answer into any of the equations now, we will the first one:

x + 15 = 45

x = 30

Girls are 30.

Step-by-step explanation:

Hope this helps

Crown me as brainliest:)

PLZ HELP IMAGE BELOW THXS

Answers

Answer = $40.00
Reasoning:
8x5 (which is 100%) =40
8x4 (which is 80%) = 32

Which relation is not a function? Please help me...

Answers

Answer:

C.

Step-by-step explanation:

Find the X and Y intercepts of the equation y = 3/2 x - 9

Answers

x intercept is 6
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Xpress this number in scientific notation. 0.15880.15880, point, 1588 Hint #11 / 3 Count the zeroes to the right of the decimal point before the leading {1}11: there are 000 zeroes. Hint #22 / 3 If you count the leading digit {1}11, there is {1}11 digit to the right of the decimal point. Hint #33 / 3 So: 0.1588 = {1}.588 \times 10^{{-1}}0.1588=1.588×10 −1

Answers

Given:

The number is 0.1588.

To find:

The scientific notation of given number.

Solution:

If a number expressed as a number between 1 and 10 is multiplied by a power of 10, then it is known as scientific notation of the number.

The given number is 0.1588.

Here, leading digit is 1.

There are no zeroes to the right of the decimal point before the leading digit 1.

Leading digit 1 is 1 digit to the right of the decimal value. So,

[tex]0.1588=1.588\times 10^{-1}[/tex]

Therefore, the scientific notation of given number is [tex]1.588\times 10^{-1}[/tex].

How many square feet of outdoor carpeting will we need for this hole 3ft 2ft 1ft 2ft 12ft 4ft

Answers

Answer:

40

Step-by-step explanation:

I got 1 minute to do this dude

Answers

Answer:

Y=30x

Step-by-step explanation:

Y-total cost, so make everything equal to that. 30 is the amount she makes each month so multiply that with x.

How do you write 453.327 word form

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Answer:

four hundred fifty three three hundred twenty sevenths

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