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s344n2d4d5 [400]
4 years ago
7

What is the solution to this equation? 3x + x - 13 + 4 - 6x = 12

Mathematics
2 answers:
Sunny_sXe [5.5K]4 years ago
8 0
<span>3x + x - 13 + 4 - 6x = 12
-2x - 9 = 12
-2x = 12 + 9
-2x = 21
x = 21/-2
x = -10.5</span>
nikklg [1K]4 years ago
7 0


3x + x - 6x - 13 + 4 = 12 

-2x - 9 = 12 <-- add 9 both sides.. 

-2x - 9 + 9 = 12 + 9 

-2x = 21 <-- divide both sides by -2 

-2x/-2 = 21/-2 

x = -21/2 

The solution is -21/2 (or -10.5 or -10 1/2)
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Complete the square to rewrite the following equation. Identify the center and radius of the circle. You must show all work and
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To find:

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x^2+4x+y^2-6y=-4

To make complete square add square of half of x and square of half of y on both sides.

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8 0
3 years ago
A cone shaped paper water cup has a height of 12 cm and a radius of 6 cm. If the cup is filled with water to half its height, wh
monitta

Answer:

The portion of the volume of the cup that is filled with water is \frac{1}{8}

Step-by-step explanation:

step 1

Find the volume of the paper water cup

The volume of the cone is equal to

V=\frac{1}{3}\pi r^{2}h

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substitute

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step 2

If the cup is filled with water to half its height, find out what portion of the volume of the cup is filled with water

Remember that

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In this problem the similar cone has half the height of the complete cone

so

The scale factor is equal to 1/2

therefore

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therefore

The portion of the volume of the cup that is filled with water is

\frac{1}{8}

8 0
3 years ago
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