3 years ago

How to solve 12x-y=37 and -5x-y=-14 using elimination method and please show work

Mathematics

1 answer:

Over [174]3 years ago

4 0

Answer:

x = 3, y= -1

Step-by-step explanation:

12x-y=37

-5x-y=-14

12x-y=37

-1(-5x-y)=-1(-14)

12x-y+5x+y=37+14

17x = 51

(17x)/17 = 51/17

x = 3

12(3)-y=37

36-y=37

-y = 1

y = -1

You might be interested in

What does circumference mean?

Korvikt [17]

Answer: Distance around a circle
are you in college?

8 0

3 years ago

The sales tax on clothing in Louisiana is 4% . Calculate how much tax you need to pay on a dress if it costs $19.50 before befor

SVEN [57.7K]

Answer:

.78 cents

Step-by-step explanation:

To find the tax amount on any number, divide that number by 100 and then multiple it by the tax percentage.

In this case that would look like: $19.50/100 times 4 =.78

3 0

3 years ago

Solve with completing the square method:<br>6x²-7x+2=0 and ax²+bx+c=0

Norma-Jean [14]

$6x ^2-7x+2=0\\ \\ a=6 , \ b = -7 , \ c=2 \\ \\\Delta = b^{2}-4ac = (-7)^{2}-4*6*2=49-48=1 \\ \\x_{1}=\frac{-b-\sqrt{\Delta }}{2a} =\frac{7-\sqrt{1}}{2*6}=\frac{7-1}{12} =\frac{6}{12}= \frac{1}{ 2}\\ \\x_{2}=\frac{-b+\sqrt{\Delta }}{2a} =\frac{7+\sqrt{1}}{2*6}=\frac{7+1}{12} =\frac{8}{12}= \frac{2}{ 3}$

7 0

3 years ago

Solve this problem <br> 3d+d-7=25/4

creativ13 [48]

If that 25/4 is a fraction them the answer is 53/4. Or in simplest form 3 5/16 or 3.3125

4 0

3 years ago

Read 2 more answers

Select all equations that are equivalent to 5x + 6/2= 3-(4x +12)

Savatey [412]

Answer:

- 4/3