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nadezda [96]
3 years ago
13

Zachary is solving the following equation.

Mathematics
2 answers:
Monica [59]3 years ago
5 0

Answer: C. Distribute 3/4 over (x-8)

Step-by-step explanation:

To solve any(technically most, but still...) algebraic equation you must isolate the variable.  In this case, the first step would either be to divide both sides of the equation by 3/4, or distribute 3/4 to x and -8, as you cannot modify the contents of the parenthesis without removing the 3/4.

Hope it helps and lmk if you further explanation <3 :)

Nina [5.8K]3 years ago
3 0

Answer:

c

Step-by-step explanation:

on edge

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In a right triangle ABC, CD is an altitude, such that AD=BC. Find AC, if AB=3 cm, and CD= root 2 cm.
Nata [24]

Given CD is an altitude such that AD=BC , AB=3 cm and CD= √2 cm.

Let AD=x, Since given AB=3

                                     AD+DB=3

                                       x+DB = 3

                                        DB = 3-x

Since ΔBCD is rght angle triangle, let's apply Pythagoras theorem

BC^{2} = DB^{2} +CD^{2}

BC^{2} = (3-x)^{2} +(\sqrt{2} )^{2}

BC^{2} =(3-x)^{2} +2

Since given AD=BC,let us plugin BC=x in above step.

x^{2} =(3-x)^{2} +2

x^{2} =9-6x+x^{2} +2

6x=11

x=\frac{11}{6}

Now we know AD=x=\frac{11}{6} and given CD=√2.

Let us apply Pythagoras theorem for ΔACD

AC^{2} =AD^{2} +DC^{2}

AC^{2} = (\frac{11}{6} )^{2} +(\sqrt{2} )^{2}

AC^{2} =\frac{193}{36}

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D

Step-by-step explanation:

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The answer is
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steps
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you can only divided these variables as all these variables in the original equation. are being multiplied. The opposite if multiplication is division.
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Is 9.78083 a rational number
Alexus [3.1K]
No it’s not as its not constant and its a fraction
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What is the difference in surface areas, in square feet, of the two boxes?
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The difference is 3ft since the surface area for the prism is 57, and the surface area for the cube is 54.

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