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harina [27]
3 years ago
10

4. Which shows that these two rectangles are similar?

Mathematics
1 answer:
rewona [7]3 years ago
8 0

Answer:

A

Step-by-step explanation:

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Which of the following could be its equation?
mrs_skeptik [129]

So to solve problems like these you can work out each equation by substituting the x and y with the coords from the vertex (2,-4) and which ever one is true is the corresponding equation.

Lets try the first one

A) y = 2( x-2)^2-4    this would become

  -4 = 2(2-2)^2-4    we solve this and get

   -4 = 2(0)-4

   -4 = -4  

so it seems like A is the correct answer, of course we'd wanna check out the other answers just to be sure.

Lets try one and do C

C)  -2 = 2(-4-2)^2+2  

    -2 = 2(-8)^2+2

    -2 = 130

These aren't equal so this can't be our equation


So you can also do one more just to be super sure you have the right answer but I think A is the correct one :)



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3 years ago
Which of the following represents the factored form of f(x) = x3 − 81x?
sladkih [1.3K]
You're original equation has a -81, so the factored form will have to have a positive and negative multiplying one another to achieve that...

f(x) = x(x + 9)(x - 9)
3 0
3 years ago
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Find the value of x that makes m
Sindrei [870]

Answer:

X = 20

Step-by-step explanation:

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kolbaska11 [484]

Answer:

78

Step-by-step explanation:

add all the numbers to get 78

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Answer:

B

Explanation:

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3 years ago
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