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
9966 [12]
3 years ago
15

If you were to solve the following system by substitution, what would be the best variable to solve for and from what equation?2

x+6y=9
3x-12y=15
Mathematics
1 answer:
aivan3 [116]3 years ago
8 0

The second equation because they all have a common factor of 3. You can get x by itself. However, with the first one, you'll end up with fractions instead.

You might be interested in
If i but a round wall clock and if the radius is 10m what is the circumference of the clock? ?
Lorico [155]
Circumference of circle= 2*idonthaveapisymbol*r 2pir Or Pi x diameter = 3.14 * 20 2(3.14)(10)
4 0
3 years ago
Read 2 more answers
fire work a travels at the speed 300 ft/s firework b travels 240 ft/s. firework b is launched 0.25s before firework a. how many
storchak [24]

Answer:

Both fireworks  will explode after 1 seconds after firework b launches.

Step-by-step explanation:

Given:

Speed of fire work A= 300 ft/s

Speed of Firework B=240 ft/s

Time before which fire work b is launched =0.25s

To Find:

How many seconds after firework b launches will both fireworks explode=?

Solution:

Let t be the time(seconds) after which both the fireworks explode.

By the time the firework a has been launched, Firework B has been launch 0.25 s, So we can treat them as two separate equation

Firework A= 330(t)

Firework B=240(t)+240(0.25)

Since we need to know the same time after which they explode, we can equate both the equations

330(t) = 240(t)+240(0.25)

300(t)= 240(t)+60

300(t)-240(t)= 60

60(t)=60

t=\frac{60}{60}

t=1

7 0
3 years ago
Find the values of x and y
qaws [65]

Answer:

y=30

x=60

Step-by-step explanation:

The triangle has all sides equal therefore all the angles are equal.

For all the angles to be equal and add up to 180 (sum of angles in a triangle is 180), each angle has to be 60.

Therefore y=90-60

=30

x=180-(30+90)

=60

8 0
2 years ago
¿qué edificaciones se encuentran en el mundo con el aspecto de una parábola?
Oksana_A [137]

Answer:

Una parábolase obtienecuando se corta un cono de tal maneraque el corte sea paralelo auno de sus lados, como lo muestra la grafica de la Fig. No 10. Una vez que se ha observado a la parábola en la naturaleza, pasemos a estudiarla desde el punto de vista geométrico.

5 0
3 years ago
Which of the following equations represents a line parallel to the line given by y=5x +9?
erma4kov [3.2K]

Answer:

y = 5x + 1

Step-by-step explanation:

Lines that are parallel to each other on a graph would have the same slope but different y-intercepts. When option A's equation is graphed along with the line given in the question, the lines appear to be parallel.  

Option A should be the correct answer.

7 0
3 years ago
Other questions:
  • A casserole recipe calls for 4 ounces of cheese. Adrian wants to use 1/2 of the amount of cheese in his casseroles. How many pou
    8·1 answer
  • What is a quart of function with only the two real zeros given? x = -4 and x = -1
    12·1 answer
  • Evaluate the following expression. round your answer to decimal places. log7 9
    14·2 answers
  • The total price of a coffee maker was $40.66. Assuming a sales tax rate of 7 percent, what was the marked price of the coffee ma
    9·1 answer
  • Gavin and Jim share some money in a ratio of 1:3 gavin gets £15 how much did Jim get
    14·1 answer
  • Suppose we are interested in bidding on a piece of land and we know one other bidder is interested. The seller announced that th
    13·1 answer
  • Put operations and try to reach the target number. You do not have to use all 6 numbers.
    5·1 answer
  • A triangle, ABC, has angle measures of 82,75, and 23 and no sides equal (congruent) in length. How would this triangle be classi
    10·2 answers
  • One Monday in December, it was -8ºC in Harbin, China and −2ºC in Beijing, China.
    14·1 answer
  • There are few differences in Florida plants as fall arrives. What differences might you see in the seeds of Florida plants?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!