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
ss7ja [257]
3 years ago
9

Elliot has a total of 26 books. He has 12 more fiction books than nonfiction books. Let x represent the number of fiction books

and y represent the number of nonfiction books.
The system of equations models the total costs for each.
x + y = 26
x – y = 12
Elliot added the two equations and the result was
2x = 38.
Solve the equation. How many of each type of book does Elliot have?

fiction books

nonfiction books
Mathematics
2 answers:
AlladinOne [14]3 years ago
4 0

<u>Answers</u>

19 fiction books

7 nonfiction books


<u>Explanation</u>

x + y = 26  ............................................. (i)

x – y = 12  ............................................ (ii)

Elliot added the two equations and the result was

2x = 38.

Dividing both sides by 2;

x = 19

There are 19 fiction books.

Substituting x in equation (i),

x + y = 26             when x = 19

19 + y = 26

y = 26 - 19

   = 7

There are 7 nonfiction books

lidiya [134]3 years ago
4 0

Answer:

Which equation represents the situation? x+(x-12)=26

Step-by-step explanation:

Check marks prove it

You might be interested in
The mapping diagram shows a function R(x).<br> Which mapping diagram shows the inverse of R(x)?
Marrrta [24]

Answer:

I think it is D I am going to guess on that

7 0
3 years ago
Read 2 more answers
Solve for x on the interval 0≤x&lt;2pi<br><br> cos(3x)=1/2
Ede4ka [16]

We will see that the solution in the given interval is: x = 0.349 radians.

<h3>How to solve equations with the variable in the argument of a cosine?</h3>

We want to solve:

cos(3*x) = 1/2

Here we must use the inverse cosine function, Acos(x). Remember that:

cos(Acos(x)) = Acos(cos(x)) = x.

If we apply that in both sides, we get:

Acos( cos(3x) ) = Acos(1/2)

3*x = Acos(1/2)

x = Acos(1/2)/3 = 0.349

So x is equal to 0.349 radians, which belongs to the given interval.

If you want to learn more about trigonometry, you can read:

brainly.com/question/8120556

7 0
2 years ago
Need help with trig question
Solnce55 [7]

Answer:

  0 +256i

Step-by-step explanation:

According to Euler's formula, ...

  (4 cis π/8)^4 = (4^4) cis (4×π/8) = 256 cis π/2 = 0 +256i

_____

"cis" is an abbreviation sometimes used for "cosine + i×sine". It simplifies writing the expression. Engineers sometimes simplify it further, writing 4∠(π/8) for the expression in this problem statement.

5 0
3 years ago
How much film does he have
gayaneshka [121]

Answer:

I Guess 5 movies

Step-by-step explanation:

That's my opinion

5 0
3 years ago
Read 2 more answers
Which of these is a point-slope equation of the line that is perpendicular to y-25=2(x-10) and passes through (-3,7)
OLEGan [10]
Y = 2x +13

We know the slope to be 2 because lines that are parallel have the same slope. Then we can solve using slope-intercept form and  the known point. 

y = mx + b ----> Input known values
7 = (2)(-3) + b ---> Multiple
7 = -6 + b ----> Subtract 3 from both sides
13 = b

Now we can use the y-intercept found and the slope to write the equation above. 
4 0
2 years ago
Read 2 more answers
Other questions:
  • the hypotenuse of a right triangle is 8 feet less than three times the shorter leg and the longer leg is 8 feet more than twice
    15·1 answer
  • Simplify the expression:<br> -6x-4x-10+3
    6·1 answer
  • A certain car lot only sells red and white cars! This month, it has a ratio of red cars to white cars of 3:2. If there are 55 ca
    8·1 answer
  • A theater can seat 952 people the number of rows is 6 less than the number of seats in each row how many rows of seats are there
    10·1 answer
  • V^2-6v+ complete square?
    7·1 answer
  • How to find out the answer to the problem,<br> -3/4 ÷ -1/8=
    10·1 answer
  • Simplify the expression.<br><br> (7 – c )(–1)
    9·1 answer
  • Maya is y years old. Her sister is 4 years older than Maya. Write an expression in simplest form that represents the sum of the
    5·2 answers
  • For brainliest Rob is saving up to buy an mp3 player
    14·1 answer
  • 0.737 ___ 0.708<br> 0.708 &gt; 0.737<br> 0.737 = 0.708<br> 0.737 &lt; 0.708<br> 0.737 &gt; 0.708
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!