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klasskru [66]
3 years ago
11

X+2y=3 x-y=6 x=? y=?

Mathematics
2 answers:
Vika [28.1K]3 years ago
3 0
Set each equation equal to either x or y.

I’ll do x.

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

x-y+y = 6+y
(Simplify) x = 6+y

(Set them equal to each other)
3-2y = 6+y

3-2y-6 = 6+y+2y

-3 = 3y

y = -1
x =5
spin [16.1K]3 years ago
3 0

Answer:

x=5

y=-1

Step-by-step explanation:

x+2y=3

x-y=6

x+2y=3

x=6+y

(6+y)+2y=3

x=6+y

6+y+2y=3

x=6+y

6+3y=3

x=6+y

3y=3-6

x=6+y

3y=-3

x=6+y

y=-3/3

x=6+y

y=-1

x=6-1

y=-1

x=5

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3 years ago
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Which equation demonstrates the multiplicative identity property?
dedylja [7]

Answer: Further explanation

There are several number operations that involve multiplication:

1. commutative

2. associative

3. closed

Multiplication between integers will produce integers too

4. distributive property

* addition

* substraction

5. identity

The multiplicative identity property is a multiplicative property in mathematics where each number multiplied by 1 will produce the original number or can be stated simply  :

"The product of any number and one is that number"

So The Multiplicative Identity is 1

can be stated in the formula:

From the available answer choices

a) (- 3 + 5i) + 0 = -3 + 5i

this is an addition operation and not multiplication while O is an identity in the sum operation, so the statement is false

b) (-3 + 5i) (1) = -3 + 5i

this is a multiplication operation and 1 is a Multiplicative Identity of multiplication, so the statement is true

c) (-3 + 5i) (-3 + 5i) = -16-30i

d) (-3 + 5i) (-3 + 5i) = 16 + 30i

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Step-by-step explanation:

5 0
3 years ago
Give an example of: degree of a polynomial is the highest sum of one of its terms, explain.
yuradex [85]

Example 1  Perform the indicated operation for each of the following.

<span>(a) </span>Add  to 

<span>(b) </span>Subtract   

Solution

(a) Add  to .

The first thing that we should do is actually write down the operation that we are being asked to do.

                                          

In this case the parenthesis are not required since we are adding the two polynomials.  They are there simply to make clear the operation that we are performing.  To add two polynomials all that we do is combine like terms.  This means that for each term with the same exponent we will add or subtract the coefficient of that term.

 

In this case this is,

           

[Return to Problems]

 

(b) Subtract  from .

Again, let’s write down the operation we are doing here.  We will also need to be very careful with the order that we write things down in.  Here is the operation

                                                 

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8 0
3 years ago
In the diagram, Ray K QJKM is a straight angle.
mixas84 [53]

The true statements about the diagram given are:

3. m∠JKL = 45°

4. m∠MKQ + m∠PKQ = m∠PKM

5. PK is an angle bisector

<h3>What is an Angle Bisector?</h3>

An angle bisector is a segment that divides a given angle into two parts that are congruent to each other.

The missing part of the question is in the image attached below.

In the image given, PK bisects the straight angle JKM since angles JKP and MKP both equal 90 degrees (right angle).

Therefore, m∠JKL = m∠PKL = 45°

m∠MKQ + m∠PKQ = m∠PKM based on the angle addition theorem.

Therefore, the true statements are:

3. m∠JKL = 45°

4. m∠MKQ + m∠PKQ = m∠PKM

5. PK is an angle bisector

(see image attached below)

Learn more about angle bisector on:

brainly.com/question/24677341

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