In order to solve the following system of equations by subtraction, which of

Mathematics

1 answer:

uysha [10]3 years ago

7 0

Answer: I think it's C.Multiply the top equation by 3 and the bottom equation by 4

Step-by-step explanation:

Multiplying the top equation by 3 you get:

3(4x – 2y) = 3∗7

12x - 6y = 21 (eq.1)

Multiplying the bottom equation by 4 you get:

4(3x – 3y) = 4∗15

12x - 12y = 60 (eq.2)

Now, if you subtact eq.2 from eq.1 you get:

(12x - 6y = 21 )

(12x - 12y = 60)

___________________

0x + [- 6y -(-12y)] = 21 - 60

Carrying out the calculation you get:

6y = -39

y = -39/6

y = -13/2

You might be interested in

Robinson's doughnut factory produces 18,000 doughnuts every day. they have a fleet of 12 delivery trucks. if the doughnuts are d

nikdorinn [45]

1,500 doughnuts will be added onto each truck. To get this answer, just simply divide the amount of doughnuts by the amount of trucks.

18,000÷12= 1,500.

Hope this helps!

6 0

2 years ago

Read 2 more answers

Write a real world problem for the equation 8x+2=26

Andrew [12]

Answer:

George has 8x+2=26 bottles of soap what is x

Step-by-step explanation:

7 0

2 years ago

Helppppppp meee pleaseee ill give brainliest

d1i1m1o1n [39]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Graph the function. Describe its position relative to the graph of the indicated function

sweet [91]

Answer:

Step-by-step explanation:

If the parent function is function $y=f(x)$ and $a>0,$ then

the graph of the function $y=f(x-a)$ is translated a units to the right graph of the parent function;
the graph of the function $y=f(x+a)$ is translated a units to the left graph of the parent function;
the graph of the function $y=f(x)+a$ is translated a units up graph of the parent function;
the graph of the function $y=f(x)-a$ is translated a units down graph of the parent function.