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
Goryan [66]
3 years ago
6

Solve by Elimination b) -4x+2y=-4 4x-5y=-8

Mathematics
1 answer:
ruslelena [56]3 years ago
5 0

Answer:

x = 3

y = 4

Step-by-step explanation:

-4x+2y=-4   -----(eq1)

4x-5y=-8 ------(eq 2)

by elimination,

(eq1) + (eq 2),

(-4x+2y) + (4x-5y) = -4 + (-8)

-4x+2y + 4x-5y = -4 -8

2y-5y = -12

-3y = -12   (divide both sides by -3)

y = -12 / (-3) = 12/3 = 4  (sub back into (eq 1) )

-4x+2y=-4   -----(eq1), when y = 4,

-4x+2(4)=-4  

-4x+8 = -4    (subtract 8 from both sides)

-4x= -4   - 8

-4x= -12 (divide both sides by -4)

x = -12 / (-4) = 3

You might be interested in
Find two decimals with a product between 1 and 2
Alecsey [184]

Answer:

.5 × 3.2 = 1.6

This gives you 1.6, which is between 1 and 2

Step-by-step explanation:


5 0
3 years ago
Can u help me plz fast
Oduvanchick [21]

Answer:

the answer is smallest to biggest

Step-by-step explanation:

3 0
3 years ago
In parallelogram ABCD above, AE =2x+4 and AC=6x. What is the length of CE?
lawyer [7]

Answer:

4-4x

Step-by-step explanation:

From the parallelogram

CE = CA+AE

Since CA = -AC

CE = -AC+AE

GIVEN

AC = 6x

AE= 2x+4

Substitute

CE = -6x+2x+4.

CE = -4x+4

Gene the length of CE is 4-4x

4 0
2 years ago
What is the solution to the system of equations graphed below?
Mariulka [41]

Answer:

it is (-4,8)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Use the graphing calculator to graph the quadratic function y=2x^2 + 2x -40. what are the zeros of the function
ahrayia [7]

Answer:

The zeroes of this function are x=-5 and x=4

3 0
3 years ago
Other questions:
  • X and y vary inversely, and x=50 when y=5. find y when x=10. what is k?
    7·1 answer
  • 464 + 30 cuánto es 1 itaria
    6·1 answer
  • Sam blinks every 15 seconds and Martha blinks every 10 seconds. They blink together at midnight. How many seconds will pass befo
    10·1 answer
  • What is the sum of a 58th arithmetic sequence where the first term is 6 and the last term is 405
    8·1 answer
  • Some hot dogs come in packages of 8. Why wold a baker of hot dog buns package 7 hot dog buns to a package?
    5·2 answers
  • Find the square root by prime factorisation method 6860.
    10·2 answers
  • What is x<br> x-6+1+6x=-5<br> PLZ HELP ME!!!<br> due today
    11·1 answer
  • HELP ASAP<br><br> answers:<br> O 1<br> O 2<br> O 3<br> O 0
    7·1 answer
  • Please answer I give brainlist.
    7·1 answer
  • I’ll give you brainliest if you guys answer This question
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!