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
Gala2k [10]
3 years ago
13

Write a system of equations to describe the situation below, solve using elimination.

Mathematics
1 answer:
Sedbober [7]3 years ago
8 0

Answer:

The cost of hardbook is $9 and cost of paperback is $5.

Step-by-step explanation:

Let x be the price for hardback book and y be the price for paperback book.

Mr. Yamamoto purchased 42 new hardcover books and 64 new paperback books, which cost a total of $698.

We can write the equation as:

42x + 64y = 698

He also purchased 42 new hardcover books and 58 new paperback books, which cost a total of $668.

We can write the equation as:

42x + 58y = 668

We have to use the elimination method to solve the two equations.

We eliminate x by subtracting the two equations.

42x + 64y-(42x + 58y) = 698 - 668\\\Rightarrow 6y = 30\\\Rightarrow y = 5\\42x + 64(5) = 698\\\\\Rightarrow x = \displaystyle\frac{698 - 64(5)}{42}\\\\\Rightarrow x = 9

Thus, the cost of hardbook is $9 and cost of paperback is $5.

You might be interested in
A square pyramid has a base side length of 8 feet. The height of each lateral face is 12 feet. What is the surface area of the p
iragen [17]
I am not sure but answer can be 1,5 or 96 and ir Can be wrong but ı am trying to help you
3 0
3 years ago
Patty is making a poster for science class. She spends. 50 minutes on each. Of 2 days. She completes 1/3 of the poster the first
Viktor [21]

Answer:

She has completed 2/3 of the poster

Explanation:

1/3 of the poster the first day

+

1/3 of the poster the next day

1/3 + 1/3 = 2/3

7 0
3 years ago
Ronald started solving the equation −2(2x−4)+3=6x+1.<br><br> Which is a correct next step?
Snowcat [4.5K]

Answer:

distribute bud

Step-by-step explanation:

distribute throught the parethesis first

8 0
3 years ago
Read 2 more answers
I need plz help fast
Bad White [126]

Answer:

<h2>-4a²b³ (-6+ 7a³)</h2><h2 />

Step-by-step explanation:

24a²b³ - 28a⁵b³

apply exponential rule:

24a²b³ - 28a²a³b³

re-write 24 as 6*4    and  -28 as 7*4

6*4a²b³ + 7*4a²a³b³

factor common terms

-4a²b³ (-6+ 7a³)

3 0
3 years ago
The temperature was 8℉. It dropped so that the temperature was 0℉. What integer represents the change in temperature?
antiseptic1488 [7]

Answer:

-8

Step-by-step explanation:

The temperature dropped 8 degree, resulting in a negative change. So the integer to represent it would be negative 8 degrees.

4 0
3 years ago
Other questions:
  • The touchdown to fumble ratio for Bobby Boucher was 9:2 If Bobby ran for 18 touchdowns,
    12·1 answer
  • Kyle saves 8% of his income for a new car this year his salary was $2000 less than in the previous year and he saved $3000 what
    11·1 answer
  • Find the 7.5% sales tax on $3.50<br> Your answer
    15·1 answer
  • The short-Run Macroeconomic Model is very similar to the standard model for markets. In what ways are these two models different
    8·1 answer
  • BRAINLIEST!!
    10·1 answer
  • A shipper bought the following item at the farmer market
    10·1 answer
  • Trish is taking care of the hans family dogs. The hans leave 7 cans of dog food for the 3 days theyll be away . How many more ca
    8·1 answer
  • Need help with this question
    14·1 answer
  • The longest side of a triangle is eight more units than the shortest side . The third side is three times the length of the shor
    10·1 answer
  • HEYY I REALLY NEED HELP WITH THIS QUESTION!!!!!<br><br> d^3 = 12 <br> D=?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!