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
Anettt [7]
3 years ago
10

Solve the system by elimination 2x+6y= -12 5x-5y= -10

Mathematics
2 answers:
kvv77 [185]3 years ago
5 0
First thing you should do is reduce coefficients.

1st equation has all multiples of '2'. Divide by 2
---> x +3y = -6

2nd equation has multiples of 5. Divide by 5.
---> x - y = 2

Now elimination part is easier. 
Eliminate 'x' variable by subtracting 2nd equation from 1st.

   x + 3y = -6
-(x  - y = 2)
----------------------
       4y  = -8

Solve for 'y'
4y = -8

y = (-8)/4 = -2


Substitute value for 'y' back into 2nd equation:
x - (-2) = 2
x + 2 = 2
x = 0

Solution to system is:
x=0, y =-2

Lena [83]3 years ago
3 0

B) (0,-2) I got 100% right.

You might be interested in
5) Coach Koehler bought supper for all the participating volleyball players after the tournament. The food was ordered from Food
Musya8 [376]

Answer:

25 hamburger

20 hot dogs

Step-by-step explanation:

7 0
3 years ago
The time required to do a job varies inversely as the number of people working. It takes 5hr for 7 bricklayers to build a park w
ExtremeBDS [4]

<u>Answer</u>

3.5 hours.


<u>Explanation</u>

The first step is to calculate the constant of proportionality.

t ∝ 1/n

t = k/n   Where t = time, K= constant and n = number of people

t = k/n

k =tn

   = 5×7 = 35

The equation becomes;

t = 35/n

for n = 10,

t = 35/10

  t = 3.5 hours.

6 0
3 years ago
A rectangular swimming pool measures 7.5 m by 4.5 m. It is completely surrounded by a fence parallel to each edge of the pool an
Illusion [34]

The total length of the fence is 48 m if the rectangular swimming pool measures 7.5 m by 4.5 m.

<h3>What is rectangle?</h3>

It is defined as the two-dimensional geometry in which the angle between the adjacent sides are 90 degree. It is a type of quadrilateral.

It is defined as the area occupied by the rectangle in two-dimensional planner geometry.

The area of a rectangle can be calculated using the following formula:

Rectangle area = length x width

It is given that:

A rectangular swimming pool measures 7.5 m by 4.5 m.

It is completely surrounded by a fence parallel to each edge of the pool and at a distance of 3 m from each edge of the pool.

The total length of the fence = 2(7.5+3×2 + 4.5+3×2)

The total length of the fence = 2(7.5+6 + 4.5+6)

The total length of the fence = 2(24)

The total length of the fence = 48 m

Thus, the total length of the fence is 48 m if the rectangular swimming pool measures 7.5 m by 4.5 m.

Learn more about the rectangle here:

brainly.com/question/15019502

#SPJ1

4 0
2 years ago
If x=0. Find the value of 8x-2(6-x)
Harrizon [31]

Answer:

-12

Step-by-step explanation:

8x - 2(6 - x)

Substitute 0 for each x

8*0 - 2(6 - 0)

Solve.

0 - 2*6

0 - 12

-12

7 0
3 years ago
Read 2 more answers
Please solve this law of indices​
PilotLPTM [1.2K]

4√36^-1 = 36^-1/4

36^3/4 • 36^-1/4

=36^2/4

or √36 = 6

5 0
2 years ago
Read 2 more answers
Other questions:
  • Match each polynomial to the term that does not change the polynomial's classification when added to it.
    14·1 answer
  • Radio listeners were asked to call in and pick their two favorite rodents the listeners had 4 choices woodchuck prairie dog beav
    9·1 answer
  • What is the volume of a rectangular prism that has the height of 3 in in base of 14 square inches
    9·1 answer
  • What is this shape???
    11·1 answer
  • A rocket is launched into the air. The projectile motion of the rocket can be modeled using h(t) = 112t –16t2, where t is the ti
    8·2 answers
  • An analyst notices that a CEO has consistently achieved 15% growth in profits from one year to the next. The CEO's company curre
    9·1 answer
  • At a restaurant, Brianna and Naomi each order an appetizer for $6.50 and an entree for $9.75. They decide to leave a 20% tip bas
    7·2 answers
  • A sports team played 100 games last season. Did this team win at least half of the games it played last season? (1) The team won
    10·1 answer
  • HURRY <br> 1.3(2x + 4) + 2(3x – 4)<br> 2. Evaluate the expression for x=5
    7·2 answers
  • The stock of Company A lost $1.18 throughout the day and ended at a value of
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!