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2 years ago

The figures are similar. Find x. Brainiest to the correct person!

Mathematics

2 answers:

STatiana [176]2 years ago

5 0

Answer:

x=15

Step-by-step explanation:

since 6 is 3/4 of 8 and the figures are similar x must be 3/4 of 20

3/4 of 20 is 15

good day to you

never [62]2 years ago

4 0

3/4 out of 20 equals 15 so the awnser would be 15

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Step-by-step explanation:

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3 years ago

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Assoli18 [71]

Complete Question

The complete question is shown on the first uploaded image

Answer:

First Question

Option A is correct

Second Question

Option C is correct

Third Question

$D = A^{-1} * B^{-1} * C^{-1}$

Fourth Question

So substituting for D in (ABC) D = I

$(ABC) * A^{-1} * B^{-1} * C^{-1} = I$

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This proof that ABC is invertible

Step-by-step explanation:

From the question we are told that

A , B and C are invertible which means that $A^{-1} , B^{-1}, C^{-1}$ exist

Now

From the question

(ABC) D = I

Where I is an identity matrix

Now when we multiply both sides by $A^{-1}$ we have

$A^{-1} A BCD = A^{-1} * I$

$IBCD = A^{-1}$

Now when we multiply both sides by $B^{-1}$ we have

$B^{-1 } *I BCD = A^{-1} * B^{-1}$

$I CD = A^{-1} * B^{-1}$

Now when we multiply both sides by $C^{-1}$ we have

$C^{-1} * I CD = A^{-1} * B^{-1} * C^{-1}$

$I D = A^{-1} * B^{-1} * C^{-1}$

$D = A^{-1} * B^{-1} * C^{-1}$

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2 years ago

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Vitek1552 [10]

Answer:

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Step-by-step explanation:

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Get the variables together

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add -12 on each side

4x-12=180

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Ivenika [448]

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