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
Viktor [21]
3 years ago
14

the local bookstore is having a sole on used books . nate bought 3 hardcover books and 7 paperback books and spent 29.50. tia bo

ught 2 hardcover books and 5 paperback books and spent 20.50. what is the cost of a hardcover book
Mathematics
1 answer:
Mkey [24]3 years ago
6 0
The first thing we must do for this case is to define variables.
 We have then:
 x = cost of a hardcover book
 y = cost of a paperback book
 We write the system of equations:
 3x + 7y = 29.50
 2x + 5y = 20.50
 The solution to the system is:
 x = 4 $
 y = 2.5 $
 Answer:
 the cost of a hardcover book is $ 4
You might be interested in
There are 52 cars in the movie theater parking lot. 12 more cars parked in the parking lot before the movie started but 3 cars l
kondaur [170]

Answer:

61

Step-by-step explanation:

52 + 12 = 64

64-3 that left is 62 cars in the parking lot

5 0
3 years ago
Read 2 more answers
I really need help. I've checked everywhere and it says cannot be factored. I will give brainliest to whoever can help me and gi
jolli1 [7]

Answer:

B) -5, 5, -7, 7           

Step-by-step explanation:

3x² - bx + 2

factor:

(3x - 2 )(x - 1) = 3x² - (5)x + 2      so 5 does work

(3x - 1 )(x - 2) = 3x² - (7)x + 2      so 7 does work

(3x + 2 )(x + 1) = 3x² + 5x +2    =    3x² - (-5)x + 2      so -5 does work

(3x + 1 )(x + 2) = 3x² + 7x + 2   =    3x² - (-7)x + 2      so -7 does work

4 0
2 years ago
G= 2/3ns <br><br>solve for variable "s"
Kisachek [45]
“S” = 3g /2n
I would think
6 0
3 years ago
Consider parallelogram VWXY below.
nirvana33 [79]

Answer:

  • 56°, 84°, 3 units

Step-by-step explanation:

<u>Properties of a parallelogram</u>

  • Two adjacent angles are supplementary
  • Opposite angles are congruent
  • Opposite sides are parallel and congruent

Use the properties to find the required parameters

1) <u>Find m∠YXV</u>

  • m∠YXV + m∠VXW + m∠VWX = 180°
  • m∠YXV + 40° + 84° = 180°
  • m∠YXV = 180° - 124°
  • m∠YXV = 56°

2) <u>Find m∠Y</u>

  • m∠Y = m∠W = 84°

3) <u>Find x</u>

  • 2x = 6
  • x = 6/2
  • x = 3
4 0
2 years ago
Read 2 more answers
Use the unit circle to find all values of thetabetween 0 and 2Ï€ for which sin(theta)=sqrt 3/2
ElenaW [278]
Sin(theta)=√3/2, 0≤theta≤360
In a unit circle, sin is y/r, r is always positive, y is positive in the first and second quadrant only. 
sin60=√3/2, sin120=√3/2
so theta is 60 or 120
5 0
3 years ago
Other questions:
  • What is bussiness? qith explanation​
    15·1 answer
  • I need help please????
    10·2 answers
  • About how accurately must the tank's exterior diameter be measured to calculate the amount of paint it will take to paint the si
    15·1 answer
  • A={a,b,c,d} B={p,q,r,s} find the value of A-B and B-A​
    9·2 answers
  • Find the distance between -17 and 4 on the real number line
    10·1 answer
  • How many numbers are 10 units from 0 on the number line? Type your answer as a numeral.
    11·1 answer
  • Hi, can someone please answer this math question for me, please? thanks
    10·2 answers
  • I’m almost done with this
    5·2 answers
  • William fills 1/3 of a water bottle in 1/9 of a minute. How much time will it take him to fill the bottle
    11·2 answers
  • What is 3/2 divide by 1/4
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!