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
Butoxors [25]
3 years ago
8

Solve each system by elimination. 4x + 7y = -10 4x + 4y = -16

Mathematics
2 answers:
OleMash [197]3 years ago
8 0

Answer:

x=-6, y=2. (-6, 2).

Step-by-step explanation:

4x+7y=-10

4x+4y=-16

----------------

-(4x+7y)=-(-10)

4x+4y=-16

------------------------

-4x-7y=10

4x+4y=-16

---------------

-3y=-6

3y=6

y=6/3

y=2

4x+7(2)=-10

4x+14=-10

4x=-10-14

4x=-24

x=-24/4

x=-6

VLD [36.1K]3 years ago
6 0

Answer:

y=2 x=-6

Step-by-step explanation:

the first equation subtract the second one ,we can get 4x+7y-(4x+4y)=-10-(-16)

4x+7y-4x-4y=6  3y=6 y=2

and then give the y value to any one of the equation 4x+4*2=-16

4x+8=-16   4x=-24 x=-6

You might be interested in
Zach has two savings accounts with a total of $9,000
Crazy boy [7]
4500 dollars! $9000 x 2 = 4500
7 0
3 years ago
Which is a factor of 20x2 + 40x + 15?<br><br> 4x + 1<br> 4x + 3<br> 2x + 3<br> x + 2
maksim [4K]
C)
2x + 3
3 0
4 years ago
What are the values of x and y if this equation is true?<br><br> 22(x + yi) + (28 + 4i) 72 – 62i
ASHA 777 [7]

Answer:

x = 2

y = -3

Step-by-step explanation:

The given equation is,

22(x + yi) + (28 + 4i) = 72 - 62i

By solving this equation further,

22x + 22yi + 28 + 4i = 72 - 62i

(22x + 28) + (22y + 4)i = 72 - 62i

Now both the sides of the equation is in the form of complex number,

By comparing real and imaginary parts given on both the sides,

22x + 28 = 72

22x = 72 - 28

22x = 44

x = 2

22y + 4 = -62

22y = -62 - 4

22y = -66

y = -3

Therefore, x = 2 and y = -3 are the values for which the given equation is true.

8 0
4 years ago
The rule for calculating the mean is to add up all the scores in a sample and divide by the _________
Tems11 [23]
Amount of numbers in the sample.
8 0
4 years ago
Kamil has 72 baseball cards. He wants to put the cards
mars1129 [50]
You would use 72/9 , ( division ).
6 0
3 years ago
Other questions:
  • 23.
    8·2 answers
  • It is now 10:29
    15·1 answer
  • Mr. and Mrs. Gomez are buying carpet for their​ square-shaped bedroom, which measures 66 yd along each wall. The carpet is ​$242
    5·1 answer
  • Find the circumference of a circle thats diameter is 6 m
    13·2 answers
  • I need help on #59, #60
    8·2 answers
  • Help me please :3 thank u
    11·1 answer
  • Which two integers is –84 between?
    7·1 answer
  • 5.<br> 16 yd)<br> 14 yd<br> 6 yd
    14·1 answer
  • If the measure of ZBEC is (2x+3)° and x = 30, which expression could represent the measure of ZAED?
    5·1 answer
  • Struggling with compare functions and need lots of help
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!