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
Leno4ka [110]
3 years ago
11

Derek has $20 to spend on used

Mathematics
2 answers:
goldfiish [28.3K]3 years ago
5 0
5x+2y = 20

For every hardcover book (x) you will be charged 5$.

For every paperback book (y) you will be charged 2$.

The amount of both types of books you buy has to be under or equal to 20$
UkoKoshka [18]3 years ago
5 0

Answer:

The equation is  5x + 2y = 20

Step-by-step explanation:

Total money Derek having = 20 $

Cost of hardcover book = 5 $

Cost of paperbacks = 2 $

We need to find equation in standard  form determines the number x of hardcover books and the number y  of paperback books he can buy.

Total cost of x hard cover books = 5x

Total cost of y paperback books = 2y

He has only 20 $

So we have

                  5x + 2y = 20

The equation is  5x + 2y = 20      

You might be interested in
Enter the value of h(-4) for h(x)=(x-2)2+3x in the box.
-Dominant- [34]

Step-by-step explanation:

please mark me as brainlest

7 0
3 years ago
Read 2 more answers
X + 2x + 7 = 3x - 7<br> How do you solve this?
Stella [2.4K]

Answer and explanation:

<em>To solve this, you must find what x equals</em>

x + 2x + 7 = 3x - 7 <em>Add together any numbers that can be added on their side</em>

3x + 7 = 3x - 7  <em>Then subtract 7 from both sides to get 3x alone</em>

3x = 3x - 14 <em> Then subtract 3x from both sides to get x</em>

<h3><em>*The x's cancel each other out so you must have typed the equation wrong. Please check to see any mistakes you may have made*</em></h3>
7 0
3 years ago
Read 2 more answers
What is the vaule of the x
Amiraneli [1.4K]
D. X=3cm
Since the triangles are similar, just set up a proportion to solve for x.

4/8=x/6. Then just cross multiply and solve from there.
6 0
3 years ago
Read 2 more answers
What is <br> (2ab-a+2) - (-ab-2)
Greeley [361]

Step-by-step explanation:

iknow but its hard to expalin

8 0
2 years ago
Armando used algebra tiles to represent the product 3x(2x – 1). Which is true regarding Armando’s use of algebra tiles?
makvit [3.9K]

Answer:

Some of the products do not show the correct powers of x.

D

7 0
3 years ago
Read 2 more answers
Other questions:
  • 2x-y=5solve the equation for y
    6·1 answer
  • -36 divided by (-12).
    9·1 answer
  • according to a recent survey, in 2000, 64% of households had one or more pets.Throughout the next decade, this decreased by appr
    15·1 answer
  • Answer this question please ASAP!!
    5·2 answers
  • Which of the following could be the areas of the three squares shown?
    9·2 answers
  • The spoke of a wheel is 15 inches long. What if the area enclosed by the tire?
    7·1 answer
  • Find the slope of the line that contains the points (-4, -1) and (-4,-2).
    14·1 answer
  • Scenario Smart businesses in all industries use data to provide an intuitive analysis of how they can get a competitive advantag
    5·1 answer
  • Apply the distributive property to create an equivalent expression.<br> 4(x − 2 + y)
    15·2 answers
  • Question is in the image
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!