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aleksley [76]
4 years ago
14

Solve the systems of equation

Mathematics
1 answer:
tresset_1 [31]4 years ago
6 0

1) x=-2y+3z-1

2) x=z-7

3) x=-y-3z+16

You might be interested in
Perform the indicated operation to write given polynomial in standard form: (x^3+2x^2 − 3x − 1) +(4 − x − x^3)
Rzqust [24]

Answer:

\left(x^3+2x^2-3x-1\right)+\left(4-x-x^3\right)=2x^2-4x+3

Step-by-step explanation:

To write any polynomial in standard form, you look at the degree of each term. You then write each term in order of degree, from highest to lowest, left to write.

To add the polynomials you need to:

Remove parentheses

\left(x^3+2x^2-3x-1\right)+\left(4-x-x^3\right)=x^3+2x^2-3x-1+4-x-x^3

Group like terms

\left(x^3+2x^2-3x-1\right)+\left(4-x-x^3\right)=x^3-x^3+2x^2-3x-x-1+4

Add similar elements

\left(x^3+2x^2-3x-1\right)+\left(4-x-x^3\right)=2x^2-3x-x-1+4\\\left(x^3+2x^2-3x-1\right)+\left(4-x-x^3\right)=2x^2-4x-1+4\\\left(x^3+2x^2-3x-1\right)+\left(4-x-x^3\right)=2x^2-4x+3

5 0
4 years ago
I need help to change the subject of the formula to W
Travka [436]

Answer:

w=\frac{h}{m} -\frac{3}{3}

I hope this is what you were asking for :)

7 0
4 years ago
​−4x + 7y + 5 = 0
Dimas [21]
Yes is A and the solution is that when you add negatives it restart number like 3x - - 3= 0
3 0
4 years ago
Please help me do not and please give me an explanation too please. No link please
krok68 [10]

Answer:

I'm pretty sure it's D.40 because it's the biggest number and 6+13+17 is only a bit bigger than 24. Also, all the numbers add up to 60 and 27 is only a bit less than 50% of 60

3 0
3 years ago
1.x-7=20<br><br>2.3x+6=12x-21​
dusya [7]

Answer:

1. x=27

2. x=3

Step-by-step explanation:

<h3>the first one </h3>

let's solve your equation step-by-step.

x−7=20

Step 1: Add 7 to both sides.

x−7+7=20+7

<h3>the second one </h3>

Let's solve your equation step-by-step.

3x+6=12x−21

Step 1: Subtract 12x from both sides.

3x+6−12x=12x−21−12x

−9x+6=−21

Step 2: Subtract 6 from both sides.

−9x+6−6=−21−6

−9x=−27

Step 3: Divide both sides by -9.

−9x/−9=−27/−9

<h3 />
8 0
3 years ago
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