All categories

3 years ago

3x-7y=13 What is y? Need awnser

Mathematics

2 answers:

olga nikolaevna [1]3 years ago

7 0

The answer is y = -13/7 + 3x/7

zepelin [54]3 years ago

4 0

Answer:

y= -13-3x÷7

Step-by-step explanation:

1st Subtract 3x from both sides: 3x-7y-3x=13-3x

2nd Simplify: -7y=13-3x

3rd Divide both sides by -7: -7y÷-7=13÷-7-3x÷-7

4th Simplify: -13-3x÷7

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

Hope this helps you out :)

You might be interested in

nlexa [21]

So say we have the number: 54,321

The 5 would be worth 50,000 meaning it's in the ten thousands place.

The 4 would be worth 4,000 meaning it's in the thousands place.

The difference between them is a zero, so the ten thousands place is 10 times bigger than the thousands place

Hope that helps :)

7 0

3 years ago

How can you use the properties of operations to evaluate<br> this expression?<br> 18 + 4(28)

pentagon [3]

Answer:

first open the bracket by multiplying 28 by 4 which is equal to 112, then add it to 18 which be equal to 130 which is the final answer

5 0

3 years ago

Read 2 more answers

Convert 120 degrees to radians in terms of pi.

shusha [124]

Radians = degrees * pi/180 therefore
120 degrees * pi /180 = 2/3 pi

8 0

3 years ago

5 (3z-3) =30 it’s from delta math 8 grade

Mkey [24]

Answer:

$5$

Step-by-step explanation:

Substitute the value of the variable into the equation and simplify.

3 0

3 years ago

Read 2 more answers

Y = 2x <br> x + y = −6<br> the answer should be like this (x,y) or ( , )

melisa1 [442]

Answer:

(-2, -4)

Step-by-step explanation:

Given:

The system of equations to solve is given as:

$y=2x\\\\x+y=-6$

In order to solve this system of linear equations, we use substitution method.

In substitution method, we substitute the value of any one variable in the other equation.

So, we substitute the value of 'y' from first equation in the second equation.

This gives,

$x+2x=-6\\\\3x=-6$

Dividing both sides by 3, we get:

$\frac{3x}{3}=\frac{-6}{3}\\\\x=-2$

Now, $y=2x=2\times -2=-4$

Therefore, the solution is (-2, -4)

6 0

3 years ago