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oee [108]
2 years ago
13

Solve the given one-step equations. Show your work.

Mathematics
2 answers:
laila [671]2 years ago
7 0
Isolate for each variable.
1. z= 6 - 10
z= -4

2. y= 48/8
y=6

3. q= 1+12
q= 13
4. 18 x 2= a
36= a
5. r= 7 x 3
r= 21

I think you can try the rest :)
Brilliant_brown [7]2 years ago
7 0
The answers are down below :)
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Mandy used the rule “Add 6” to make a pattern. She started with 20 and wrote the next 5 numbers in her pattern. Which number doe
valentina_108 [34]

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Step-by-step explanation:

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For each equation find all the roots<br><br><br> PLEASE HELP I AM SO CONFUSED
worty [1.4K]

Answer:

Step-by-step explanation:

13.

x³-x²-x-2=0

x³-2x²+x^2-2x+x-2=0

x²(x-2)+x(x-2)+1(x-2)=0

(x-2)(x²+x+1)=0

x-2=0,x=2

x²+x+1=0

x=\frac{-1\pm\sqrt{1^2-4*1*1}}{2*1}} \\x=\frac{-1 \pm\sqrt{1-4} }{2} \\x=\frac{-1 \pm\sqrt{-3}}{2} \\x=\frac{-1\pm\sqrt{3} \iota}{2}

<em>12.</em>

<em>3x^4-11x³+15x²-9x+2=0</em>

<em>\[3x^4-3x^3-8x^3+8x²+7x²-7x-2x+2=0\]</em>

<em>3x³(x-1)-8x²(x-1)+7x(x-1)-2(x-1)=0</em>

<em>(x-1)[3x³-8x²+7x-2]=0</em>

<em>x-1=0,gives x=1</em>

<em>3x³-8x²+7x-2=0</em>

<em>3x³-3x²-5x²+5x+2x-2=0</em>

<em>3x²(x-1)-5x(x-1)+2(x-1)=0</em>

<em>(x-1)(3x²-5x+2)=0</em>

<em>x-1=0,gives x=1</em>

<em>3x²-5x+2=0</em>

<em>3x²-3x-2x+2=0</em>

<em>3x(x-1)-2(x-1)=0</em>

<em>(x-1)(3x-2)=0</em>

<em>x-1=0,gives x=1</em>

<em>3x-2=0, gives x=2/3</em>

<em>so roots are 2/3,1,1,1</em>

<em />

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3 0
2 years ago
I don’t get number 7
VikaD [51]

C because 43 divided by 50 is 0.86

5 0
3 years ago
Read 2 more answers
What is the solution set for -3x ? 3 &gt; -21?
Ymorist [56]

The solution set for the inequality expression is (-∞, -6)

<h3>Solving inequalities</h3>

Inequality are expressions that does not involve an equality sign.

Given the following parameters

-3x + 3 > -21

Subtract 3 from both sides

-3x + 3 - 3 > 21 - 3

-3x > 18

Divide both sides by -3

-3x/-3 < 18/-3

x < -6

Hence the solution set for the inequality expression is (-∞, -6)

Learn more o inequality here: brainly.com/question/24372553

#SPJ1

3 0
2 years ago
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