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lukranit [14]
3 years ago
14

(20 Points) Perform the indicated operations.

Mathematics
1 answer:
JulijaS [17]3 years ago
7 0

Answer:

5x-8/12y

Step-by-step explanation:

x+1

3y

+

x−2

4y

−(

x+3 /6y

=

30xy2−48y2

72y3

=

30x−48/72y

=

5x−8 /12y

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Simplify 9 exponent 2
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Answer:

81

Step-by-step explanation:

9^2 = 81 bc 9x9=81

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What is the area of the sector? Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi and enter
n200080 [17]

Question:

What is the area of the sector? Either enter an exact answer in terms of π or use 3.14 and enter your answer as a decimal rounded to the nearest hundredth.

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete as the values of radius and central angle are not given.

However, I'll answer the question using the attached figure.

From the attached figure, the radius is 3 unit and the central angle is 120 degrees

The area of a sector is calculated as thus;

Area = \frac{\alpha }{360} * \pi r^2

Where \alpha represents the central angle and r represents the radius

By substituting \alpha = 120 and r = 3

Area = \frac{\alpha }{360} * \pi r^2 becomes

Area = \frac{120}{360} * \pi * 3^2

Area = \frac{1}{3} * \pi * 9

Area = \pi * 3

Area = 3\pi square units

Solving further to leave answer as a decimal; we have to substitute 3.14 for \pi

So, Area = 3\pi becomes

Area = 3 * 3.14

Area = 9.42 square units

Hence, the area of the sector in the attached figure is 3\pi or 9.42 square units

8 0
3 years ago
in a game the player wins if he rolls a 6 on a number cube if the number cube is rolled 18 times then what is a reasonable predi
Dmitry_Shevchenko [17]

Answer:

There would be 15 unsuccessful rolls

Step-by-step explanation:

6 0
3 years ago
Find the product
o-na [289]

Answer:

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Step-by-step explanation:

2x(x - 3)(x + 2)

= 2x ( x^2 + 2x -3x - 6)

= 2x (x^2 - x - 6)

= 2x^3 - 2x^2  - 12x (answer).

7 0
3 years ago
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boyakko [2]
(5, 90) 

You can solve both equations for y and then set equal to each other. Then use the quadratic equation to solve for x
6 0
3 years ago
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