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
IRINA_888 [86]
3 years ago
13

WILL GIVE BRAINLIEST

Mathematics
2 answers:
Alik [6]3 years ago
6 0

Answer:

Divide the second equation 2x+4y=32 by 2

Step-by-step explanation:

Given a linear equation system, there are three basic operations that we can make in order to obtain a second equivalent system :

1. Making a new equivalent system changing the equations order.

2.Making a new equivalent system multiplying one of the equations by a constant k (k\neq 0) and k ∈ IR

3.Making a new equivalent system adding equations that are a linear combination of the remaining equations.

Examples : The system

\left \{ {{-x+y=2} \atop {2x+4y=32}} \right. is equivalent to

\left \{ {{2x+4y=32} \atop {-x+y=2}} \right.  (We used 1.)

The system

\left \{ {{-x+y=2} \atop {2x+4y=32}} \right. is equivalent to \left \{ {{-10x+10y=20} \atop {2x+4y=32}} \right. (We used 2. given that we multiplied the first equation by 10)

The system

- x + y = 2

2 x + 4 y = 32

is equivalent to

- x + y = 2

2 x + 4 y = 32

x + 5 y = 34

(We used 3. given that the third new equation is a linear combination of the first and second equation. The third equation is the sum of the first and the second one)

In the exercise,

\left \{ {{-x+y=2} \atop {2x+4y=32}} \right. is equivalent to

\left \{ {{-x+y=2} \atop {x+2y=16}} \right.

Because we divided the second equation by 2 (Notice that this is an example of 2. because we multiply the second equation by \frac{1}{2})

stepan [7]3 years ago
3 0

Answer: The first one, (Divide the second equation, 2x + 4y= 32, by 2.)

Step-by-step explanation:

You might be interested in
A car can go 35 1/2 miles in 1 1/2 miles gallons. How many gallons does a car need to go 639 miles?
Mnenie [13.5K]

Answer: 27 gallons

Step-by-step explanation:

Since the car can go 35½ miles in 1½ miles gallons, we need to first calculate the number of miles that the car can go in 1 gallon. This will be:

= 35½ / 1½

= 71/2 / 3/2

= 71/2 × 2/3

= 23⅔ miles per gallon.

Therefore, the amount of gallons that the car need to go 639 miles will be:

= 639 / 23⅔

= 639 ÷ 71/3

= 639 × 3/71

= 27

The car will need 27 gallons.

4 0
3 years ago
if 1/2 an apple was shared equally among 3 people. what fracton of the who apple did each person recive.
enyata [817]

Answer:

1/6

Step-by-step explanation:

1/2/3 is a sixth of an apple that all 3 people equally shared.

3 0
4 years ago
A pet store sells 50 pets over the weekend. of the 50 what percentage were fish,birds,and lizards
gavmur [86]
30 percent were fish 10 percent were birds 10 percent were lizards 
7 0
3 years ago
Estimate the domain
natima [27]

Take a look at the horiz. line. It has arrows at both ends. That means that x goes on forever in both directions. Thus, the domain of this function is (-inf, +inf).


4 0
3 years ago
Read 2 more answers
Triangle GFH has vertices G(2, –3), F(4, –1), and H(1, 1). The triangle is rotated 270° clockwise using the origin as the center
Rufina [12.5K]

Answer:

See attachment.

Step-by-step explanation:

The given triangle,GFH has vertices G(2, –3), F(4, –1), and H(1, 1).

When this triangle is rotated 270°  clockwise using the origin as center of rotation; then the coordinates of the image triangle, G'F'H' can be obtained using the mapping;

(x,y)\to (-y,x)

This implies that the new triangle will have vertices at;

G'(3, 2), F'(1, 4), and H'(-1, 1).

The correct choice is shown in the attachment.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Frank owns 250 acres of land. If he divides the land into 1/3 acre plots, how many plots will he have?
    8·2 answers
  • Which is NOT used to reach conclusion in a formal proof?
    9·1 answer
  • What is the value of x inthe equation 1/5×-2/3y=30, when y=15?
    10·1 answer
  • Which of the following polynomial functions could represent the graph on the right?
    15·1 answer
  • Jack reduced a picture to use as a logo for his company. The picture is 24 in. wide × 36 in. high. The logo is 6 in. wide.
    6·1 answer
  • What is the value of B - A, as a fraction?
    7·2 answers
  • Which set of sides will not make a triangle
    10·2 answers
  • !!HELP NEEDED!!
    7·1 answer
  • A dilation has center (0,0). Find the image of the point L(6-8) for the scale factor 7.
    13·1 answer
  • How many prime numbers are between 0 and 20?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!