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3 years ago

I need help i dont understand this

Mathematics

1 answer:

marishachu [46]3 years ago

4 0

Answer:

Step-by-step explanation:

I did the quiz

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Which statement is true about the following system of equations

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How to Find the inverse of this

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4 years ago

What is the solution-2|2.2x-3.3|=-6.6

mylen [45]

$Solution, solve\:for\:x,\:-2\left|2.2x-3.3\right|=-6.6\quad :\quad x=0\quad \mathrm{or}\quad \:x=3$

$Steps:$

$-2\left|2.2x-3.3\right|=-6.6$

$\mathrm{Divide\:both\:sides\:by\:}-2,\\\frac{-2\left|2.2x-3.3\right|}{-2}=\frac{-6.6}{-2}$

$\mathrm{Simplify},\\\left|2.2x-3.3\right|=3.3$

$|f\left(x\right)|=a\quad \Rightarrow \:f\left(x\right)=-a\quad \mathrm{or}\quad \:f\left(x\right)=a,\\2.2x-3.3=-3.3\quad \quad \mathrm{or}\quad \:\quad \:2.2x-3.3=3.3$

$2.2x-3.3=-3.3,\\\mathrm{Add\:}3.3\mathrm{\:to\:both\:sides},\\2.2x-3.3+3.3=-3.3+3.3,\\\mathrm{Refine},\\2.2x=0,\\\mathrm{Multiply\:both\:sides\:by\:}10,\\.2x\cdot \:10=0\cdot \:10,\\\mathrm{Refine},\\22x=0,\\\mathrm{Divide\:both\:sides\:by\:}22,\\\frac{22x}{22}=\frac{0}{22},\\\mathrm{Simplify},\\x=0$

$2.2x-3.3=3.3,\\\mathrm{Multiply\:both\:sides\:by\:}10,\\2.2x\cdot \:10-3.3\cdot \:10=3.3\cdot \:10,\\\mathrm{Refine},\\22x-33=33,\\\mathrm{Add\:}33\mathrm{\:to\:both\:sides},\\22x-33+33=33+33,\\\mathrm{Simplify},\\22x=66,\\\mathrm{Divide\:both\:sides\:by\:}22,\\\frac{22x}{22}=\frac{66}{22},\\\mathrm{Simplify},\\x=3$

$\mathrm{Combine\:the\:ranges},\\x=0\quad \mathrm{or}\quad \:x=3$

$\mathrm{The\:Correct\:Answer\:is\:x=0\quad \mathrm{or}\quad \:x=3}$

$\mathrm{Hope\:This\:Helps!!!}$

$\mathrm{-Austint1414}$

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3 years ago

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Ethan sorts shapes into two groups as shown what mistakes did ethan make

nataly862011 [7]

Ethan's mistakes in sorting the shapes into two groups are:

Shape C does not belong to group 1 because it does not have square corners
Shape F does not belong to group 2 because it does not have any square corners

<h3>How to spot the mistakes?</h3>

From the complete question (see attachment), the shapes are grouped using the following criteria:

All the shapes in group 1 have 4 square corners
All the shapes in group 2 have exactly 1 square corner

Using the above rules, Ethan's mistakes are: shapes C and F are placed in the wrong groups

I need help i dont understand this​

I need help i dont understand this