Ask question

Ask question

All categories

3 years ago

8

-6x+y=-2x-3y=9 what is the solution set?

1 answer:

Anarel [89]3 years ago

3 0

Mult. the 2nd eqn by 6 and then add this "new" equation to the 1st given eqn:

-6x + y = -2
6x -18y = 54
--------------------
-17y = 52, or y = -52/17. Subst. this value of y into either equation to find the value of x.

You might be interested in

A density curve for all the possible weights between 0 pounds and 10 pounds is in the shape of a rectangle. What is the value of

Evgesh-ka [11]

The total area under the curve must equal 1. Let the value of the density curve be x. Then 10x = 1. Therefore x = 1/10 or 0.1.
The correct answer is D. 0.1.

8 0

2 years ago

Read 2 more answers

What is 5x+4=26 I don’t understand it please help thanks

babunello [35]

Answer: 4.4

Step-by-step explanation:

First you need to take 4 from both sides and then your left with 5x=22

Then you divide from both sides and you get 4.4.

That is your final answer.

3 0

2 years ago

Read 2 more answers

there were 260 students enrolled in a school last year and 40 teachers employed by the same school. this year the number of stud

tatiyna

The percentage change would be 4%

7 0

3 years ago

Find the equation of a line that passes through (-5,4) and us parallel to y=-6/7x+3

irina [24]

Given:

The given equation of line is

$y=-\dfrac{6}{7}x+3$

To find:

The equation of line that passes through (-5,4) and is parallel to the given line.

Solution:

Slope intercept form of a line is

$y=mx+b$ ...(i)

where, m is slope and b is y-intercept.

We have,

$y=-\dfrac{6}{7}x+3$ ...(ii)

On comparing (i) and (ii), we get

$m=-\dfrac{6}{7}$

Slope of given line is $m=-\dfrac{6}{7}$ .

Slope of parallel lines are same. So, slope of parallel line is $m=-\dfrac{6}{7}$ .

The required line passes through (-5,4) with slope $m=-\dfrac{6}{7}$ . So, the equation of line is

$y-y_1=m(x-x_1)$

$y-4=-\dfrac{6}{7}(x-(-5))$

$y-4=-\dfrac{6}{7}(x+5)$

$y-4=-\dfrac{6}{7}x-\dfrac{30}{7}$

Adding 4 on both sides, we get

$y=-\dfrac{6}{7}x-\dfrac{30}{7}+4$

$y=-\dfrac{6}{7}x+\dfrac{-30+28}{7}$

$y=-\dfrac{6}{7}x-\dfrac{2}{7}$

Therefore, the correct option is a.

8 0

3 years ago

1.a food bank has 50 cans of vegetables,30 loaves of bread,and 100 bottles of water.the volunteers will put the items into boxes

Bumek [7]

1. 10 boxes
2. about 20
3. 6x100 + (6x9)x10 + 6x8

3 0

2 years ago