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2 years ago

2x-3y=32 1/2(2X+3y)=-8

Mathematics

1 answer:

Alex787 [66]2 years ago

8 0

Answer:

x=4 :y=-8

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Multiply. Check picture.

VashaNatasha [74]

The answer is $3x^4-13x^3-x^2-11x+6$ .

Solution:

Use algebraic identity: $a^m\times a^n=a^{m+n}$

For example: $x^2\times x=x^{2+1}=x^3$

Given expression $(x^2-5x+2)$ and $(3x^2+2x+3)$ .

To multiply these equations.

$(x^2-5x+2)\times(3x^2+2x+3)$

$=x^2(3x^2+2x+3)-5x(3x^2+2x+3)+2(3x^2+2x+3)$

$=(3x^4+2x^3+3x^2)+(-15x^3-10x^2-15x)+(6x^2+4x+6)$

$=3x^4+2x^3+3x^2-15x^3-10x^2-15x+6x^2+4x+6$

Combine like terms together.

$=3x^4+(2x^3-15x^3)+(3x^2-10x^2+6x^2)-15x+4x+6$

$=3x^4-13x^3-x^2-11x+6$

$(x^2-5x+2)\times(3x^2+2x+3)=3x^4-13x^3-x^2-11x+6$

Hence the answer is $3x^4-13x^3-x^2-11x+6$ .

3 0

3 years ago

If the sum of all interior angles of a regular polygon is 1080 degrees then number of sides of the polygon is?

MakcuM [25]

Answer: 8

Step-by-step explanation:

The formula for the sum of the angles of a polynomial is:

$S_n=180(n-2)$

1080 = 180(n - 2)

1080 = 180n - 360

1440 = 180n

8 = n

6 0

3 years ago

1) Suppose you put money into two different bank accounts. In account #1 you deposit $500 and you will be earning 6% interest co

Elis [28]

The answer for number 1 is D they will have the same amount of money.

6 0

3 years ago

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How much pure water must be mixed with 10 liters of a 25% acid solution to reduce it to a 10% acid solution?

Alex73 [517]

The solution is 25% acid, which means 2.5 liters acid (10 x .25).
you need that 2.5 liters to be 10%, or 1/10th the total. 
the total would have to be 25 liters (2.5 x 10) so when you add to 10 to get 25 you get 15 liters. Hope I helped!

3 0

3 years ago

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Use the given zero to find all the zeros of the function.

Hitman42 [59]

Answer:

11x + 5

Step-by-step explanation:

8 0

3 years ago