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
Aleksandr [31]
2 years ago
11

1. What should be done to these equations to solve the system of equations by elimination? 2+y=12 5x - 3y = -3​

Mathematics
1 answer:
atroni [7]2 years ago
3 0
<h3>Answer:</h3><h3>Multiply the first equation by 3</h3>

<h3>explanation</h3>

To solve a simultaneous equation using elimination method, you eliminate one variable first.

Before you can do that, the coefficient of one of the variable in the two equations must be same.

From the questions, for the coefficient of one variable in the two equations to be thesame, we multiply the first equation by 3.

If we do this, the coefficient of Y in the two equations will now be 3.

So that the correct option is

<h2>Multiply the first equation by 3</h2>
You might be interested in
Three teachers share 2 packs of paper equally.
cupoosta [38]

I believe the answer is C because each teacher would get 2 packs for the three that get paper

3 0
3 years ago
A bag contains 39 colored marbles. There are six blue marbles, 14 red marbles, eight yellow marbles, and 11 clear marbles. What
Assoli18 [71]

Answer:

6 to 10 or 6/10

Step-by-step explanation:

5 0
2 years ago
where you imagined depositing $500 into a savings account that had an annual interest rate of 5%. Calculate how much you would e
romanna [79]

Answer:

&

Step-by-step explanation:

Column 1:

500 x 5% = 250

$250 in interest each year

Column 2:

500 + 250 = 750

<em>$750 at the end.</em>

4 0
3 years ago
A pet toy manufacturer is designing a plastic ball for dogs that will float in water. In order for the ball to float it must hav
algol13

Answer:

3.576 cm

Step-by-step explanation:

radius of ball, r=?

Given:

Density, p = 0.600g/mL

mass, m= 115g

finding volume, v of ball by using formula p=m/v

v= m/p

= 115/0.600

=191.666 mL^3

=191.666 cm^3

Now using formula v= (4/3)πr^3 to find radius, r of the ball

r^3= 3v/4π

   = 3(191.666)/4π

   =45.75 cm

r   =3.5767 cm !

7 0
3 years ago
What is the shape of the cross-section formed when a plane containing line AC and line EH intersects this cube? What is the area
velikii [3]

Answer:

Cross section is a rectangle.

Area of cross section = 16 sqrt(2) = 22.63 sq. units (to 2 decimals)

Step-by-step explanation:

Given a cube.

top face ABCD is parallel and congruent to bottom face EFGH  ........(1)

justified by the properties of cubes

Sides AE and CH are perpendicular to faces ABCD and EFGH ..........(2)

justified by the properties of cubes

Diagonals AC and EH are congruent ......................(3)

justified by (1), congruent top and bottom faces  

Consider cross-section ACHE

AC is congruent and parallel to  EH   (1) & (3)

EA & HC are perpendicular to AC      (2)

Therefore the quadrilateral ACHE is a rectangle.

Length of diagonal AC = sqrt(4^2+4^2) = 4 sqrt(2)  ..........pythagoras theorem

AE = CH = DG = 4      properties of cube, all sides equal

Area of ACHE = 4* 4sqrt(2) = 16 sqrt(2) = 22.63 sq. units

4 0
3 years ago
Other questions:
  • This morning Greg’s car had 25.25 of fuel now 1.4 gallons are left how much fuel did Greg use
    12·1 answer
  • Yesterday tyler ate lunch at his local diner. the bill for his meal came to 8.40, it including sales tax. tyler wants to leave a
    9·1 answer
  • The graph of a proportional relationship passes through (6, 48) and (1, y). Find y.
    7·1 answer
  • 10×+2=7 what is equal to 2x?
    13·2 answers
  • Which of the following statements is true?
    12·1 answer
  • PLS HELP ASAP! 20 PTS<br><br> evaluate
    13·1 answer
  • Math pls help me big time
    11·2 answers
  • I’ll give the Brainliest to whoever answers this question with a reasonable explanation.
    14·1 answer
  • Simplify the following expression. 3 + [(7 ÷ 7)] × 6
    6·2 answers
  • A circular hot spring has a diameter of 110 meters. Overtime the hot spring decreases by 3 meters. By how many square meters doe
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!