Trudy bought a $20 prepaid long distance phone card. for every minute that she talks, $0.25 is deducted from her card. The function f(m)=20-0.25m represents the amount of money f(m) she has left after talking m minutes.FInd the zero and explain what it means in the context of the situation.

Answers

Answer 1

Answer:

Step-by-step explanation:

Given the function f(m)=20-0.25m to represent the amount of money f(m) she has left after talking m minutes, the zero of the equation can be gotten by setting f(m) to 0

f(m)=20-0.25m

0 =20-0.25m

-20 = -0.25m

m = -20/-0.25

m = 80

Hence Trudy will have talked for 80minutes if she has no money left


Related Questions


HELP ASAP ! NEEDANSWERS

Answers

Answer:

y-axis

Step-by-step explanation:

The shape is reflected across the y-axis which is the vertical axis.

Answer:

Reflection over the y-axis

Step-by-step explanation:

It flips from left to right or OVER the y-axis.

A gym charges $8.75 for each swimming class and a one-time registration fee of $12.50. A student paid a total of $56.25. How many swim classes did the student take?

Answers

Answer:

He took 5 swimming classes.

Step-by-step explanation:

The problem states that the student paid a total of $56.25 for the classes and also the one-time registration fee. To find the number of classes, we should first subtract the one-time registration fee from the total.

$56.25 - $12.50 = $43.75

Now that we know he spent a total of $43.75 on the classes without the registration fee, we can divide that number by the cost of one class ($8.75) to calculate the total number of classes he took.

43.75 / 8.75 = 5

why wuld 8/4 be considerd a whole number

Answers

Answer:

because 8/4=2

Step-by-step explanation:

4/4=1

8/4=2

it's because the numerator is bigger if it were 6/4 it would be a mixed number but the eight goes in to 4 directly 2 time so therefore it's 2.

8
9
× i need help
5
8

Answers

The answer is going to be 5162.

Answer: 5/9, if I got it right.

Step-by-step explanation:

if you're talking about fractions, here is the work. I am not great at explaining.

Hope this helps!

Just look at the picture asap plz​

Answers

Answer:

A

Step-by-step explanation:

(SIMPLY) y=-3/4x-3

what is 9.15 x 10^-4 in standard form

Answers

Answer:

.000915x

Step-by-step explanation:

Answer:

0.000915x

Step-by-step explanation:

Check it out it works man(woman)

What is the slope of the line through -4,3 and 5,3

Answers

Answer:

slope = 0

Step-by-step explanation:

Calculate the slope m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (- 4, 3) and (x₂, y₂ ) = (5, 3)

m = [tex]\frac{3-3}{5+4}[/tex] = [tex]\frac{0}{9}[/tex] = 0

Roy has $100 in a savings account that earns 11% interest, compounded annually. To the nearest cent, how much will he have in 1 year?

Answers

Answer:

111

I'm pretty sure

Step-by-step explanation:

5x+3−3x−5

I only asked this question if anyone needs to ask, so they don't have to.

Answers

Answer:

2x-2

Step-by-step explanation:

Question 5 of 8
In arithmetic, variables look like
Answer here
SUBMIT

Answers

Answer:

In arithmetic, variables look like letters.

Step-by-step explanation:

As we know that Mathematical arithmetic deals with numbers and certain properties with them.

Some of the main properties between numbers are as follows:

AdditionSubtractionMultiplicationDivision

Variables do not remain constant, so we basically assign a number to a variable with an equal operator denoted by '='.

For example, let us assume a variable x being equal to 7. so it can written as:

[tex]x = 7[/tex]

Let suppose the value of the variable x=7 changes to x=10, then the new value will be:

[tex]x = 10[/tex]

Therefore, the correct answer is:

In arithmetic, variables look like letters.

Is 5/6 equal to 2/3?

Answers

Answer: They are not equal

=====================================================

Work Shown:

For now, let's assume they are equal. We'll show a contradiction happens.

5/6 = 2/3

5*3 = 6*2 ... cross multiply

15 = 12 ... here's the contradiction

If the original equation was true, then we would get the same thing on both sides in the final step shown above. However, we get a contradiction, so that means the original equation is false.

Furthermore, the left side is larger in the third step, so the left side is larger for each of the three steps. We can then say

5/6 > 2/3

5*3 > 6*2

15 > 12

Which helps show 5/6 is larger than 2/3.

---------------------

Or you can use a calculator to see that

5/6 = 0.833 approximately

2/3 = 0.667 approximately

which shows the two fractions aren't equal and 5/6 is larger.

please help due in 5 mins

What is the probability of landing on an even number? (Write your final answer as a percentage.)



P(event)

Answers

Answer: 1/2 which equals 50%

Step-by-step explanation:

Answer:

0.5 because there are 4 numbers and 2 of them are even so it would be 1/2

Please please please quick quick quick

Answers

Answer:

y= -1/5x + 4/5  (The bottom answer)

Step-by-step explanation:

Sorry for the late response!

Good luck with the rest of your assessment!

What are the three trigonometric ratios?​

Answers

Answer:

There are three basic trigonometric ratios: sine , cosine , and tangent . Given a right triangle, you can find the sine (or cosine, or tangent) of either of the non- 90° angles. Example: Write expressions for the sine, cosine, and tangent of ∠A .

Step-by-step explanation:

Hope this helped, Have a Wonderful Day!!

Instructions: Solve the following literal equation.
Solve P-2w/2= l for P.

Answers

Answer:

P=l+w

Step-by-step explanation:

Solve for P by simplifying both sides of the equation, then isolating the variable.

Which of the following values are solutions to the inequality x-7< 5?x−7<5?

Answers

Answer:

x>12

Step-by-step explanation:

Answer:

These are = to........so =

Need an answer within an hour i will give brainlist dont write just anything please. thank you

Answers

Answer:

its not a straight line so what is the question ????????  maybe f(-3) = -3f

Step-by-step explanation:


Solve for x and y
3x + 2y = 16
7x + y = 19

(-2,-5)
(-2,5)
(2,5)
(2,-5)

Answers

Answer:

(2,5)

Step-by-step explanation:

it's (2,5) just to let you now

Question in picture solve

Answers

The third one because it passes the vertical line test

plzzzzzzzzzzzzzzzzzzzzzzzz helpppppppppp

Answers

Answer:

[tex](-7_{s})^3[/tex]=  -343s

Step-by-step explanation:

-343s^3 is your answer

I wanted to show my work but let me show you using a website

Express (31 – 4)(x + 7) - 1x as a trinomial in standard form.

Answers

Answer:

This would be 26 x + 189

Identify the equation of a line in point slope from that passes through the points (5,-4) and (-3,2)

Answers

Answer:

y = 3/4x - 1/4

Step-by-step explanation:

y= 3/4x-1/4 is the correct answer i think

EASY PLEASE HELP PLEASE HELP 15 POINTS...PLEASE HELP

Answers

Answer:

Well the equation of the line is -3x+4, so we know the slope is -3/1

Answer:

1/3

Step-by-step explanation:

Rise = 1

Run    3

Given that a = -1, b=2 and c= -3 ,find the value of a(b2+c2)

Answers

Answer:

a([tex]b^{2}[/tex]+[tex]c^{2}[/tex]) = = -13

Step-by-step explanation:

Given that a = -1, b=2 and c= -3

find the value of a([tex]b^{2}[/tex]+[tex]c^{2}[/tex])

Just substitute the values given for each variable

a([tex]b^{2}[/tex]+[tex]c^{2}[/tex]) = (-1)([tex]2^{2}[/tex]+[tex](-3)^{2}[/tex]) ; do the exponents first

a([tex]b^{2}[/tex]+[tex]c^{2}[/tex]) = (-1)(4+9)=(-1)(13) ; now add inside the parenthesis;

a([tex]b^{2}[/tex]+[tex]c^{2}[/tex]) = -13 ; and multiply by -1

Solve -11h − 27 ≤ 16h for h.

Answers

The Answer:

[tex]h \geqslant - \frac{27}{17} [/tex]

Answer:

h ≥ -1

Step-by-step explanation:

i took a quiz and got it right

hope this helps :)

If 45% of a number is 63 and 35% of the same number is 49, find 80% of that number.

Answers

Answer:

Step-by-step explanation:

1) Let the number be y

45%of y=63

45y/100=63

Y=6300/45

Y=140

So 80%of a number =80y/100

=80×140/100

=112.

Let the number be y

35%of y=49

35y/100=49

Y=4900/35

Y=140

So 80%of a number =80y/100

=80×140/100

=112.

Will give brainliest if correct.

Answers

The slope is -5/0. Hope this helps

Round 2,767,545 to the nearest ten

Answers

Answer:

2767550

Step-by-step explanation:

There's no difference whatsoever. And so if we round to 2767545 to the nearest ten, it becomes 2767550.

What is the slope a line perpendicular to the line 2x+4y=8? *

Answers

Answer:

slope of line perpendicular to given equation(m)=2

Step-by-step explanation:

A flat-screen television was marked down by 35 percent, which reduced its price by $115.65. What was the original cost of the television before it was marked down?
$214.78
$330.43
$404.78
$4,047.75

Answers

Answer:

B

Step-by-step explanation:

35% of this price is :

35/100 × x = 0.35x

The price reduces by 0.35x.

This equals to 115.65

Now :

0.35x = 115.65

100/35 × 115.65 = 330.43

Answer:

THE ANSWER BBB . $330.43

Step-by-step explanation:

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