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3 years ago

What is the solution to this system of linear equations 7x-2y=-6 8x+y=3

Mathematics

2 answers:

mestny [16]3 years ago

7 0

Answer:

(0,3)

Step-by-step explanation:

7x-2y=-6

8x+y=3

Multiply the second equation by 2 so we can eliminate y

2(8x+2y) = 2*3

16x+2y=6

Add the first equation to the modified second equation

7x-2y=-6

16x+2y=6

--------------------

23x = 0

Divide by 23

23x/23 = 0/23

x =0

Now we need to find y

8x+y = 3

0+y =3

y=3

(0,3)

kipiarov [429]3 years ago

3 0

Answer: B

Step-by-step explanation:

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The owner of a local farm sells baskets of fresh tomatoes in the summer time. Each basket is priced according to its mass rounde

elixir [45]

Answer:

4 1/10 kg

Step-by-step explanation:

To find the total mass, we add the mass of the three baskets

1 1/10 + 1 3/10 + 1 7/10

Since they have the same denominator

1 1/10

1 3/10

1 7/10

-------------

3 11/10

Change the improper fraction to a mixed number

11/10 = 1 1/10

3 + 1 1/10

4 1/10

7 0

3 years ago

I need help with this if right I will mark uou

dusya [7]

Answer:

Step-by-step explanation:

the buyer will get some amount of money left while the seller gets profit as well

5 0

3 years ago

7.2801098892805 how can i caculate this ASAP PLS

Studentka2010 [4]

Answer:

ja s and the not only way I could

3 0

3 years ago

FEE

frozen [14]

Answer:

The equations represent the line that is parallel to 3x - 4y = 7 and pass through the point (-4,-2) are:

$y+2=\frac{3}{4}\left(x+4\right)$

$3x - 4y = -4$

Step-by-step explanation:

The slope-intercept form of the line equation

$y = mx+b$

where

m is the slope

b is the y-intercept

Given the line

3x - 4y = 7

writing in the slope-intercept form

4y = 3x - 7

dividing both sides by 4

4y/4 = 3/4x - 7/4

y = 3/4x - 7/4

Now, comparing with the slope-intercept form of the line equation

y = 3/4x - 7/4

The slope of the line m = 3/4

We know that parallel lines have the same slopes.

Therefore, the slope of the parallel line is: 3/4

now we have,

The point (-4, -2)

The slope m of parallel line = 3/4

Given the point-slope form of the line equation

$y-y_1=m\left(x-x_1\right)$

where m is the slope of the line and (x₁, y₁) is the point

substituting (-4, -2) and m = 3/4 in the point-slope form of line equation

$\:y-\left(-2\right)=\frac{3}{4}\left(x-\left(-4\right)\right)$

$y+2=\frac{3}{4}\left(x+4\right)$

Thus, the equation in the point-slope form of the line equation is:

$y+2=\frac{3}{4}\left(x+4\right)$

Simplifying the equation

$y+2=\frac{3}{4}\left(x+4\right)$

Subtract 3 from both sides

$y+2-2=\frac{3}{4}\left(x+4\right)-2$

$y=\frac{3}{4}x+1$

Multiplying the equation by 4

$4y = 3x + 4$

$3x - 4y = -4$

Therefore, the equations represent the line that is parallel to 3x - 4y = 7 and pass through the point (-4,-2) are:

$y+2=\frac{3}{4}\left(x+4\right)$

$3x - 4y = -4$

7 0

3 years ago

U=x+y/ky , solve for x

masya89 [10]

In the given equation the value of the x be a x = U*ky-y.

According to the statement

we have to find that the value of the x from the given statement.

So, For this purpose, we know that the

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

From the given information:

The given statement is

U=x+y/ky

now, rearrange the terms then

U*ky=x+y

U*ky-y = x

And then the value f the x become

x = U*ky-y.

So, In the given equation the value of the x be a x = U*ky-y.

Learn more about equation here

brainly.com/question/13763238

#SPJ9

4 0

2 years ago