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3 years ago

Solve x − 2y = 3 for x.

Mathematics

2 answers:

Ann [662]3 years ago

7 0

Answer:

x = 3 + 2y

Step-by-step explanation:

This is the answer because:

1) First, you have to isolate x, in order to isolate x you have to bring x to the end of the equation.

2) Then, you have to add 2y to both sides of the equation.

Another way you can think of this is:

1) If you add 3 + 2y you would figure out the answer because if you want to find x for a subtraction equation, you can add the answer to the equation with the number.

For example, x - 20 = 10, now to figure this equation out, you can either isolate the x, or you can add the answer in the equation with the remaining number in the equation.

Hope this helps!

wolverine [178]3 years ago

5 0

Answer:

$x=2y+3$

Step-by-step explanation:

So we have the equation:

$x-2y=3$

And we want to solve for x. In other words, we want to isolate the x-variable.

So, add 2y to both sides of the equation.

$(x-2y)+2y=(3)+2y$

On the left, the 2y cancel. Simplify the right:

$x=2y+3$

And we're done!

You might be interested in

Which points are the verticles of the ellipse? Equations of ellipse

Mashutka [201]

Answer:

This question is solved in detail below. Please refer to the attachment for better understanding of an Ellipse.

Step-by-step explanation:

In this question, there is a spelling mistake. This is vertices not verticles.

So, I have attached a diagram of an ellipse in which it is clearly mentioned where are the vertices of an ellipse.

Vertices of an Ellipse: There are two axes in any ellipse, one is called major axis and other is called minor axis. Where, minor is the shorter axis and major axis is the longer one. The places or points where major axis and minor axis ends are called the vertices of an ellipse. Please refer to the attachment for further clarification.

Equations of an ellipse in its standard form:

$\frac{x^{2} }{a^{2} } + \frac{y^{2} }{b^{2} } = 1$

This is the case when major axis the longer one is on the x-axis centered at an origin.

$\frac{x^{2} }{b^{2} } + \frac{y^{2} }{a^{2} } = 1$

This is the case when major axis the longer one is on the y-axis centered at an origin.

where major axis length = 2a

and minor axis length = 2b

3 0

2 years ago

How o I get the awnser to 9s+3=57 I need help asap im in 8th grade

PIT_PIT [208]

First subtract 3 from both sides of the equal sign.
9s + 3 = 57
- 3 -3
9s = 54

Then divide both sides by 9.
9s = 54
/9 /9
s = 6

You can check it by plugging it back into the equation.
9s + 3 = 57
9 * 6 + 3= 57
54 + 3 = 37
57 = 57
Yep! It's correct! :)

Hope that helped. Algebra can be tricky sometimes I know but it's really just balancing equations.

3 0

3 years ago

What two prime numbers equal 85

hram777 [196]

One and eighty five. 1x85=85 but 85 isnt prime>>>

7 0

3 years ago

Read 2 more answers

Translate this sentence into an equation<br> 28 is the product of Julie score and two

pochemuha

Answer:

$2x=28$ ...Which is the required Equation.

Step-by-step explanation:

Question is

Translate this sentence into an equation

28 is the product of Julie score and two.

Solution:

Let the Julie score denoted by 'x'

According to the given condition,

28 is the product of Julie score and two

i.e 28 = 'x' × 2

$28=x\times 2\\\\2x=28$

$2x=28$ ...Which is the required Equation.

7 0

3 years ago

Each marble bag sold by Lucy's Marble Company contains 7 yellow marbles for every 5 green marbles. If a bag has 45 green marbles

Elan Coil [88]

Answer:

63 yellow marbles

Step-by-step explanation:

You can set up this equation as a proportion:

7/5 = x/45

Divide 45 by 5 to see what 7/5 must be multiplied by to get to x/45.

You should get 9, so also multiply 7 by 9 to get this:

7/5 = 63/45

This shows that there are 63 yellow marbles for 45 green marbles.

Please thank, rate, and mark brainliest! :)

5 0

2 years ago