1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Valentin [98]
3 years ago
5

A cell phone costs $120 dollars. The price is reduced 30% for a sale. How much is the savings?

Mathematics
1 answer:
Ierofanga [76]3 years ago
8 0

Answer: $84

Step-by-step explanation: If the phone costs 120 and it’s reduced by 30% all you have to do is 120 multiplied by 0.3 which equals 36. So you take the original price and subtract it by 36. your answer will be 84

You might be interested in
Are exponential function one to one. How can you tell? What does this tell you about their inverses
aleksandrvk [35]

See in the explanation

<h2>Explanation:</h2>

<h3>1. Are exponential function one to one. How can you tell?</h3>
  • A function f is one-to-one if each value of x corresponds to exactly one value of y.

To demonstrate this, we take the Horizontal Line Test that states:

<em>A function f has an inverse function if and only if there is no any horizontal line that intersects the graph of f at more than one point.</em>

As you can see in the first figure, the horizontal line y=3 (the green one) intersects the graph of the exponential function y=e^x (the red one) in just one point. If you take every horizontal line y=y_{0} with y_{0} any real number, you will find that every line intersects the exponential function in just one point. Therefore, this function is one-to-one

<h3>2. What does this tell you about their inverses?</h3>

Another important thing is that:

  • A function has an inverse function if and only if is one-to-one.  

As we have demonstrated that exponential functions are one-to-one by Horizontal Line Test, then we conclude exponential functions have inverse functions. The domain of the inverse function is the range of the original one and the range of the inverse function is the domain of the original one. The inverse of y=e^x is y=ln(x) whose graph is the second figure below.

<h2>Learn more: </h2>

How to find the inverse of a function? brainly.com/question/9980183

#LearnWithBrainly

5 0
3 years ago
The company has a sample box that is a rectangular prism with a rectangular base with an area of 231⁄3 in2. The height of the pr
vodka [1.7K]

Answer:

29.17 in^3

Step-by-step explanation:

We are given that  

Base area of sample box,a=23\frac{1}{3} in^2=\frac{70}{3}in^2

Height of the sample box,h=1\frac{1}{4}=\frac{5}{4} in

We have to find the volume of the sample box.

We know that  

Volume of rectangular prism,V=ah

Where a=Area of base

Using the formula  

Volume of sample box=\frac{70}{3}\times \frac{5}{4}=29.17 in^3

Hence, the volume of the sample box=29.17 in^3

6 0
3 years ago
Firefighters need to use a 60-foot ladder to save a child. She is 50 feet above street
mr_godi [17]

Answer:

The ladder must be placed at a distance of 33.2 feet from the bottom of the building

Step-by-step explanation:

From what we have here, we are looking at a right angled triangle with the hypotenuse which is the length of the ladder

The height of the child is 50 feet from ground level

So we need to get the third side of the triangle

We can get this by considering the use of Pythagoras’ theorem

This will give us the length of the third side of the triangle

From Pythagoras’ the square of the hypotenuse is equal the sum of the squares of the two other sides

Let the unknown side be x

Thus;

60^2 = 50^2 + x^2

x^2 = 60^2 - 50^2

x^2 = (60-50)(60+50)

x^2 = (10)(110)

x^2 = 1100

x = square root of 1100

x = 33.166

To the nearest tenth, this is 33.2 feet

3 0
3 years ago
How can you use bar graphs to compare quantities in real life situations
BlackZzzverrR [31]
You can illustrate it by comparing two quantites in a correlational basis. Like the price times the time of how a courier delivers a package or a internet speed vs the data cap and land area and the investment.

Bar graph display directly the variables which are the rate and ratio of the numbers to visualize and display the results, these contrasting the different outcomes. On the contrary, histogram is used in grouped frequency parameters. Moreover, as little as the given five parameters or data set this will be ineffective and will result to a bar graph only and basically, the suited option is the aforementioned vertical graph to display the numbers. To expound on the definition of histogram it is used when the frequency is grouped. For example the data set of 1-5, 6-10, 11-15 and 16-20 this now can be used and applied to illustrate histogram because of the number and quantity of the given data.<span>
</span>
4 0
3 years ago
Read 2 more answers
Martin bought a painting for $5,000. It is expected to appreciate at a continuous rate of 4%. How much will the painting be wort
maksim [4K]

Answer:

$6326.6

Step-by-step explanation:

5000(1.04)^{6} Multiply 5000 by 1.04 to the 6th exponent.

7 0
3 years ago
Other questions:
  • What is the slope of the line that passes through the points (-4, 8) and (−14,8)?
    6·1 answer
  • one month charlie rented 2 movies 3 video games for a total of $21. The next month he rented 4 movies and 8 video games for a to
    14·1 answer
  • Solve for s.<br> S-1<br> 2<br> +3<br> S
    14·1 answer
  • 2/15 + 27/35 = what in reduced terms
    13·1 answer
  • 10] James is about to paint the walls of his lounge. The lounge has 4 walls (2 x Wall A and 2 x Wall B). Wall A and wall B which
    14·1 answer
  • Which of the following are the domain and range that represent the inverse of the function f(x), given the mapping diagram of f(
    10·1 answer
  • Given that (6,-8) is on the graph of f(x), find the
    15·1 answer
  • The circumference of the
    9·1 answer
  • What is the mathematical translation of " ten multiplied by a number y"​
    9·1 answer
  • Anyone know the answer?? ​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!