All categories

3 years ago

Solve the systems of equations y=2x and y=-x - 6

Mathematics

1 answer:

slava [35]3 years ago

7 0

Answer:

y = -4

x = -2

Step-by-step explanation:

Hi there...

y = 2x

y = -x - 6

Since why is equal to 2x, we can plug it in for y in the second equation. Here's what I mean...

2x = -x - 6

add x on both sides...

3x = -6

divide by 3 on both sides...

x = -2

Now, plug in x for y. Here's what I mean...

y = 2x

y = 2 (-2)

y = -4

Hope this helps :)

You might be interested in

Explain whether a triangle exists with side lengths 31 m, 89 m, and 122 m.

ziro4ka [17]

Answer:

Step-by-step explanation:

The sum of the smaller sides is not bigger than the largest side, 122. ( 31 + 89 = 120 < 122)

5 0

3 years ago

devin makes a 15% commission each month for everything he sells. if devin sells $2750 of merchandise this month, how much of a c

kakasveta [241]

Answer:

$412.50

Step-by-step explanation:

15% of 2750 = 0.15 × 2750 = 412.5

7 0

3 years ago

3x - 3y = -3<br>2x - y = -5

Korolek [52]

For this case we must solve the following system of equations:

$3x-3y = -3\\2x-y = -5$

To solve we follow the steps below:

We multiply the second equation by -3:

$-6x + 3y = 15$

Thus, we have the equivalent system:

$3x-3y = -3\\-6x + 3y = 15$

We add the equations:

$3x-6x-3y + 3y = -3 + 15\\-3x = -3 + 15\\-3x = 12\\x = \frac {12} {- 3}\\x = -4$

We look for the value of the variable "y":

$2 (-4) -y = -5\\-8-y = -5\\-y = -5 + 8\\-y = 3\\y = -3$

Thus, the solution of the system is given by:

$(x, y): (- 4, -3)$

Answer:

$(x, y): (- 4, -3)$

4 0

3 years ago

How do you do this and what would the answer be.

Natali [406]

If you add the same number together it is impossible for it to be a negative number

3 0

3 years ago

Read 2 more answers

MULTIPLE CHOICE GEOMOTRY QUESTIOON

rosijanka [135]

Answer: D

Step-by-step explanation: Im vv sure, is this a test?

7 0

3 years ago