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
Irina18 [472]
3 years ago
14

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

Mathematics
1 answer:
VashaNatasha [74]3 years ago
7 0

Answer: B. x, in the second equation

Step-by-step explanation:

The given system :

2x+6y=9...................(1)\\\\3x-12y=15.........................(2)

To apply the substitution method , first we need to select the best variable and  a equation which is easy to simplify.

From the given system equation (2) have all the numbers which are multiples of 3.

Then we divide 3 on both sides of equation (2), we get

x-4y=5\\\\\Rightarrow\ x=4y+5

Therefore, the best variable to solve for and from what equation is x, in the second equation.

You might be interested in
A shop sells sweets where every 3 sweet wrappers can be exchanged for one more sweet. Kelvin has enough money to buy only 19 swe
drek231 [11]

Answer:

Kelvin can get 6 free sweets

6 0
1 year ago
Which number is not a rational number?
Valentin [98]
Rational is a number that can be expressed as a ratio of two in tegers where denominator is not equal to 0 is called a rational number.
4 0
2 years ago
From a set of 27 ​marbles, 4 white​, 12 black​, and 11 green​, we choose one at random. What are the odds in favor of choosing a
garik1379 [7]

Answer:

4/27 chance of getting a white marble.

Step-by-step explanation:

There are 4 white marbles but there are 27 marbles in total. If you wanted a percentage, then divide 4 by 27 and place the decimal two places to the right once you founded your answer.

(sorry if it's a bad explanation)

6 0
3 years ago
The cost of 25 pounds of bird seed is $44.50. What is the cost for one pound of bird seed
Nimfa-mama [501]
Answer=1.78 Explanation:44.50÷25=1.78
7 0
2 years ago
You begin solving the equation 3+4x=513+4x=51 by subtracting 33 from both sides. Which is the best choice for Step 22?
bonufazy [111]
33 +4x = 513
4x = 480 (x = 480/4: x = 120)


Answer
Step 2 Divide each side by 4
7 0
3 years ago
Other questions:
  • What process do you use to find the percent change of a quantity?
    14·1 answer
  • Represent the following sentence as an algebraic expression, where "a number" is the
    9·1 answer
  • X varies directly as y, and x = 153 when y = 9. Find x when y = 13.
    8·1 answer
  • Question 1 of 10
    8·1 answer
  • 4. A function consists of the pairs (2,3), (x, y) and (5,6). If the inverse is also a function what values can y NOT be? Explain
    7·1 answer
  • Been looking for answers all day. Please.
    14·1 answer
  • Rationalize the denominator of $\displaystyle \frac{1}{\sqrt{2} + \sqrt{3} + \sqrt{7}}$, and write your answer in the form\[
    5·1 answer
  • Find the value of x and y<br> 3x<br> 20<br> 25<br> 18<br> 6y-2-<br> X=<br> Y=
    5·1 answer
  • What angle corresponds with angle A?
    5·1 answer
  • Solve for b a equals A=3(b + C)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!