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ale4655 [162]
3 years ago
13

Find the area of the white region

Mathematics
1 answer:
klemol [59]3 years ago
3 0

Answer:

Area = 51.89cm^2

Step-by-step explanation:

The- region- is- a -segment\\r = 7cm\\\alpha = 150\\A = \frac{\alpha }{360} \times \pi r^2 -\frac{1}{2} \times r^2Sin\alpha \\\\A = \frac{150}{360} \times 3.142 \times7^2 -\frac{1}{2} \times 7^2  \times Sin 150\\A =5/12 \times 3.142 \times49- (1/2\times 49 \times1/2)\\A = 64.149-49/4\\A = 51.89

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A number is divided by 3. Then, 5 is added to the quotient, and the result is 8. What is the number?
Sergeu [11.5K]

Answer:

D. 9

Step-by-step explanation:

1. 9/3 = 3

2. 3+5 = 8

Result = 8

8 0
3 years ago
Solve 2x + 5y = −13 3x − 4y = −8
zlopas [31]
If you would like to solve 2x + 5y = -13 and 3x - 4y = -8, you can do this using the following steps:

2x + 5y = -13       /*4
3x - 4y = -8         /*5
_______________
8x + 20y = -52
15x - 20y = -40
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8x + 15x + 20y - 20y = -52 - 40
23x = -92
x = -92 / 23
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<span>3x - 4y = -8 
</span>3 * (-4) - 4y = -8
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12 + 4y = 8
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The correct result would be x = -4 and y = -1.
6 0
3 years ago
tap A fills a tank in 6 hours tap B fills it in 8 hours and tap C empties it in 10 hours. starting with an empty tank and all th
Alex787 [66]

Answer:

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Step-by-step explanation:

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C empties in 10 hours, so the fraction removed per hour is 1/10

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we have it that in an hour, the fraction retained is;

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= (20 + 15 - 12)/120

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So this is the fraction retained per hour

The number of hours it will take to have a whole is simply the reciprocal of this fraction

That would simply be 120/23 = 5 5/23

5 hours and 5 minutes

6 0
3 years ago
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loris [4]
(1,3) 

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3 years ago
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Oduvanchick [21]

Answer:

This is a right angle shape.

Step-by-step explanation:

8 0
3 years ago
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