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
Snezhnost [94]
3 years ago
6

(04.01)Solve the following system of equations by substitution and select the correct answer below:4x − 6y = 28 8x − 4y = 24

Mathematics
1 answer:
Kay [80]3 years ago
8 0
It is convenient to divide the second equation by 2, then substitute for 4x in the first equation.
  4x -2y = 12
  4x = 12 + 2y . . . . solve for 4x

  (12 +2y) -6y = 28 . . . . substitute for 4x
  -4y = 16 . . . . . . . . . . . . subtract 12
  y = -4 . . . . . . . . . . . . . .divide by -4

  4x = 12 + 2(-4) = 4
  x = 1

The solution is (x, y) = (1, -4).
You might be interested in
The process of squaring a number by itself twice is called​
faltersainse [42]

Answer:

square root

Step-by-step explanation: i think this is right but please tell me if it is wrong

4 0
3 years ago
Is the answer 200? Or 4.5??? Or is none ? I don't know it's confusing :/ can I get help :/
skelet666 [1.2K]
Let x = the number of penguins we are finding

x ÷ 100 × 30 = 15
x = 15 ÷ 30 × 100
x = 50

hope this helps and have a great day :)


6 0
3 years ago
Read 2 more answers
Find the sum of (x+5), (-4x-2), and (2x-1)<br><br> Show your work please
Papessa [141]
Sum means add
(x+5) + (-4x-2) + (2x-1)
=-3x+3+(2x-1)
=-x+2
7 0
3 years ago
Read 2 more answers
What is the value of the expression 30+(-6)? <br>-180<br> -5 <br>5 <br>24​
tigry1 [53]

Answer:

24

Step-by-step explanation:

30 + (-6) is equivalent to 30 -6, which is 24.

3 0
3 years ago
Read 2 more answers
What value is equivalent to 3^2 · 4^3?
pogonyaev

Answer:

576

Step-by-step explanation:

3*2 = 9

4*3 = 64

9 x 64 = 576

3 0
2 years ago
Other questions:
  • Help me please :''c​
    10·1 answer
  • packs of pickled peppers were reduced to 20% off their original price of $3.50. Today there’s an additional 10% off the reduced
    10·2 answers
  • Find the angle indicated
    11·2 answers
  • Give the slope and y intercept 6x-3y=-9
    12·1 answer
  • Please help. Josh threw darts at a dartboard 10 times. Assume that he threw the darts randomly and did not aim. Based on his res
    10·2 answers
  • When the crispy rice traits have cooled, Mrs. Williams cut them into 30 equal pieces. She gives two -fifths of the treats to her
    10·1 answer
  • The perimeter of a television screen is 42 inches. The screen is 8 inches tall. How wide is it?
    13·1 answer
  • What is the measure of angle a? what is the measure of angle b?
    8·1 answer
  • This week Kent worked 15 hours at $12.50 an hour. His paycheck, including his commission, was $263.85. Ken wants to know how muc
    14·1 answer
  • Please help please please help me please help please please
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!