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
Mandarinka [93]
3 years ago
11

I need help with elimination with substitution. The equations are 3x+4y=19 and 3x+6y=33

Mathematics
1 answer:
olganol [36]3 years ago
4 0
For elimination, multiply one whole equation by negative one (-1), then add or subtract according to your signs. After that, it will be a one-step equation.

3x + 4y = 19          3x + 4y = 19             3x + 4y = 19          -2y = -14        y = 7
3x + 6y = 33     -1 (3x + 6y = 33)          -3x - 6y = -33          -14 / -2

Then you would go back and substitute the value of (y) back into either equation and then solve for the remaining variable (x). Finally, use both values to make an ordered pair.

3x + 4y = 19          3x = -9          x = -3          (-3 , 7)
3x + 4(7) = 19       (-9 / 3)
3x + 28 = 19          

Good Luck

You might be interested in
A driver starts his parked car and within 7 seconds reaches a velocity of 75 m/s as he travels west. What is his acceleration?​
Otrada [13]

Answer:

21

Step-by-step explanation:

jfnvjfog'nearg

5 0
4 years ago
Read 2 more answers
I need a little help here please
erma4kov [3.2K]

Answer:

Plot points at (0,1) and (-3,3) and draw a line going through both points.

Step-by-step explanation:

Let's start by graphing the y intercept.

y=mx+b

m is the slope. b is the y intercept. Since the equation is y=-2/3x+1, we can conclude the y intercept is 1. We graph a point at (0,1).

If you didn't know the y intercept is where the line intercepts the y-axis.

Now, from the point (0,1) we go up 2 and to the left 3 as it is a negative slope. We reach (-3,3). Plot a point there. Then draw a line going through both points. There's your line!

3 0
3 years ago
A shooting star forms a right triangle with the Earth and the Sun, as shown below:
frez [133]

The positions of the sun, earth and shooting star form a right angled triangle, where distance between earth and sun is 'y', and the angle 'x°' is given

Now, in a right angled triangle using trigonometry, we can determine a side of the triangle is one of the sides and one of the angles is known

Here, if we use cos x = \frac{Base}{Hypotenuse} we can determine the distance between the shooting star and the sun. This can be done because we know that the base is 'y', the angle is x° and the hypotenuse represents the distance between the sun and the shooting star

Note: cos values for each x are definite.

3 0
3 years ago
The area of a square garden is 50 m². How long is the diagonal? 100 m mc028-1.jpg m 25 m 10 m
SCORPION-xisa [38]
A=s^2 50=S^2 s= sqrt50 s=7.071 ms  a^2+a^2=c^2 50+50=c^2 100=c^2 c= sqrt100 c=10ms  So the answer would be 10 hope this helped
7 0
3 years ago
Read 2 more answers
Solve using substitution.<br><br> y = –9x − 1<br><br> y = –4x − 6<br><br> ( __ , __ )
Alenkasestr [34]

Answer:

x=-y-1/9

y=9x-1

x=-y/4-3/2

y=-4x-6

4 0
3 years ago
Other questions:
  • Solve for y<br> 2y + 6 = 1 - 3y
    15·2 answers
  • Aaron bought 7/8 of a yard of fabric and it cost him $4.10. What does a full yard cost?
    14·1 answer
  • GCF and sum of 28 + 35
    9·2 answers
  • Find the geometric mean. 4a and a; 4a and 2a.
    6·1 answer
  • 7) In Problem 6 we poured a large and a small bowl of cereal from a box. Suppose the amount of cereal that the manufacturer puts
    7·1 answer
  • ............................
    14·1 answer
  • Branniest to whoever is right plz help
    12·1 answer
  • Which shows the expression below in simplified form?
    12·1 answer
  • Jsjskwhjsjsja boy or girl???​
    8·2 answers
  • if the skating rink was $6 per person and the birthday party will cost $72, how many skaters will be at sami's party?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!