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
konstantin123 [22]
3 years ago
12

Which value of x satisfies both -9x + 4y = 8 and -3x − y = 4?

Mathematics
1 answer:
Gekata [30.6K]3 years ago
7 0
Cancel y values
multiply 2nd equation by 4 and add to first

-9x+4y=8
<u>-12x-4y=16 +</u>
-21x+0y=24

-21x=24
divide both sides by -21
x=24/-21
x=-8/7

C is answer
You might be interested in
The saucer for Roger's teacup has a radius of 3 centimeters. What is the saucer's circumference?
Fantom [35]

C=dπ and r+r=d so 3+3=6 and 6π≈18.84 so the circumference would be 18.84
7 0
3 years ago
Can someone explain this to me?
Deffense [45]

Answer:

200

Step-by-step explanation:

So its basically you multiply the length by the width which is 15 times 5 which is 75 then you multiply 75 times 4 which is 200 so the answer is 200.

6 0
2 years ago
Read 2 more answers
A is a prorportional three dimensional model of an object
klio [65]
Scale factor mark brainliest plz
5 0
3 years ago
A supply company manufactures copy machines. The unit cost C (the cost in dollars to make each copy machine) depends on the numb
Ugo [173]
To answer this item, we take the differential of the equation and equate to zero.
 
                  C(x) = 0.8x² - 256x + 25939

Differentiation,
                dC(x) = 1.6x - 256 
                 dC(x) = 1.6x - 256 = 0

The value of x from the derived equation above is 160. 

Thus, the number of machine to be made in order to minimize the cost should be 160. 
4 0
3 years ago
Read 2 more answers
Evaluate the expression for<br> c = 3 and d = -1<br> cd2
asambeis [7]

Answer: 3

Step-by-step explanation:

3(-1)^2

6 0
3 years ago
Read 2 more answers
Other questions:
  • Solve the equation <br> q-26= -53
    5·1 answer
  • How do you interpret the statement that F(60)=86?
    12·2 answers
  • Which of the following ratios is not equivalent to 6:10
    6·2 answers
  • Find the greatest common factor.<br> 8j, 6j
    11·2 answers
  • Please answer this question
    10·1 answer
  • I need help with geometry
    7·2 answers
  • Which of the following uses the given set of points to prove that triangle ABC cong triangle EFD ?
    12·1 answer
  • THERES A PIC!! pls answer!! will give brainiest!!
    7·2 answers
  • 8. Solve for y:<br> 24 = 3y
    10·1 answer
  • What is the length of the unknown side?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!