You need to solve a system of equations. You decide to use the elimination method. Which of these is not allowed? 2x - 3y = 12

Mathematics

1 answer:

suter [353]3 years ago

6 0

Answer:

Step-by-step explanation:

The Elimination Method is the method for solving a pair of linear equations which reduces one equation to one that has only a single variable.

If the coefficients of one variable are opposites, you add the equations to eliminate a variable, and then solve.

If the coefficients are not opposites, then we multiply one or both equations by a number to create opposite coefficients, and then add the equations to eliminate a variable and solve.

When multiplying the equation by a coefficient, we multiply both sides of the equation (multiplying both sides of the equation by some nonzero number does not change the solution).

So, option B is not allowed (it is not allowed to multiply only one part of the equation)

You might be interested in

Which ideas about functions are the most helpful

avanturin [10]

Answer:
It helps in calculating the price of groceries such as fruits.
Step-by-step explanation:
Remember, functions are mathematical expressions that represent or shows the relationship between one or more variables.
For example, let's say a young girl wants to shop for 20 oranges in a mall. If we express the price using the function where;
y represents the total cost of the oranges,
20 represents the number of oranges,
x represents the cost per orange (assumed to $0.99)
Then, by means of the knowledge of function, the girl determines the total cost she to be $19.8 (20*0.99).

6 0

3 years ago

–9(w + 585) = –360 w = ______

vekshin1

Answer:

w = 15

Step-by-step explanation:

-9(w + 585) = -360w

-9w -5265 = -360w

351w = 5265

w=15

3 0

4 years ago

Read 2 more answers

Will give brainliest answer

natita [175]

A translation by 11 units to the left and 3 units up

4 0

3 years ago

Terrance and Jesse are training for a long-distance race. Terrance trains at a rate of 6 miles every half hour, and Jesse trains

AnnyKZ [126]

I set up fractions based on quarter hours. I hope this helps.

8 0

3 years ago

In one year, Angelica's height went from 52 inches to 56 inches what was the percent of increase in Angelica's height

AleksandrR [38]

Answer: 7.7%

Step-by-step explanation: First find the increase in height by subtracting 52 from 56. 56-52=4.

To find what percent this is of 52, divide 4 by 52. 4/52=0.0769. Then convert this from a decimal to a percent by multiplying by 100. 0.0769*100=7.69.

I just rounded it to the nearest tenth, you can change it how you need to.

8 0

4 years ago