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
laiz [17]
3 years ago
8

What number would you multiply the 2nd equation by in order to eliminate the y terms?

Mathematics
1 answer:
leonid [27]3 years ago
7 0

Answer:

x=3

y=-1

Step-by-step explanation:

first multiply the 2nd row by 2 so you will get

4x-4y=16

4x+2y=10

then subtract the 2nd row from the first row and so you will get

-6y=6

then solve for y in the above equation

y=-1

then substitute y=-1 into any 2 equations .

i picked the first 1

4x-4 × -1=16

then solve for x .

you will get

x=3

You might be interested in
Regular quadrilateral pyramid with base edge b=55 mm and lateral edge l = 7cm. Find the sum of all edges
egoroff_w [7]

Answer:

50cm or 500mm

Step-by-step explanation:

There are 4 base edges and 4 lateral edges, therefore, multiply the number for both edges by 4 and add.

Considering the fact that we were given two units of measurement, millimeters and centimeters, but we know that there are 10mm (millimeters) in a cm (centimeter) , we can just divide 55 by 10 to get 5.5.

¦

Therefore;

5.5 x 4 = 22

7 x 4 = 28

28 + 22 = 50cm

The diagram can be drawn in order to assist in answering the question.

8 0
3 years ago
I’m getting 9.8 not sure what I’m doing wrong
Afina-wow [57]

Answer: 10

Step-by-step explanation:

it says round to nearest 10 your answer was 9.8 so round to 10.

hope this helps :)

7 0
3 years ago
Solve the system of linear equations.
icang [17]

Answer: The set does not have a solution

Step-by-step explanation:

Adding Equations 1 & 3 we get 5x = 7. This gives x = 7/5

Putting this value of x in eq. 2 we get

-2y + 2z = -1-(7/5) or

2y - 2z = 12/5  or  5y - 5z = 6

Multiplying eq. 1 by 2  we get  

4x + 2y - 2z = 6

adding this with eq. 2 we get 5x = 5 or x = 1

As the common solution for x from equations 1&3 does not satisfy eq. 1&2 it comes out that the three equations do not have a common solution.

Same can be verified by using different sets of two equations also.

7 0
4 years ago
If 9 x 0 + 4 = 4 had parenthesis where would they go?
Bingel [31]

Answer:

(9 x 0) + 4=4

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
The length of a rectangle is 10 yards more than the width. If the perimeter is 68 yards, what are the length and width?
quester [9]

Divide the perimeter by 2, this will give you the sum of one length and one width.

68/2 = 34 yards

Now the length is  10 yards more, so subtract 10 from the 34 and divide by 2 again:

34 - 10 = 24

24 /2 = 12

The width is 12 yards.

The length is 12 + 10 = 22 yards.

5 0
3 years ago
Other questions:
  • What are the x and y-intercepts of the line described by the equation?
    14·2 answers
  • Help me out,With that question
    15·1 answer
  • Please find a and b help asap:)
    10·1 answer
  • Help find the perimeter and area
    7·2 answers
  • Decide whether the numbers can represent the side lengths of a triangle. If they can, classify the triangle as right, acute, or
    15·1 answer
  • Clark Kent and Lois Lane were laying on a blanket, enjoying a relaxing picnic when Clark noticed a giant asteroid approaching Ea
    8·1 answer
  • Given that the slope is -4 and the y intercept is -4 what is the equation of the line?​
    8·1 answer
  • What is the volume and surface area of 3d shapes?
    6·1 answer
  • Someone please help me state all the possible names for the figure
    10·1 answer
  • Помогите пожалуйста!! задания с 9 по 16!! Очень надо!! заранее огромное вам спасибо!!<З
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!