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12345 [234]
3 years ago
11

A circular sector has a central angle of π6 radians and a radius of 9 ft.

Mathematics
2 answers:
ohaa [14]3 years ago
8 0

Answer:

\approx \: 21.2 \:  {ft}^{2}

Step-by-step explanation:

central \:  \angle   =  \frac{\pi ^{c} }{6}  = 30 \degree \\  \\ area \: of \: the \: sector =  \frac{30 \degree}{360 \degree}  \times \pi {(9)}^{2}  \\  \\  =  \frac{1}{12}  \times 3.14 \times  81 \\  \\  =   \frac{1}{12}  \times 254.34 \\  \\  = 21.195 \:  {ft}^{2}  \\  \\  \approx \: 21.2 \:  {ft}^{2}

docker41 [41]3 years ago
3 0

Answer:

given

π6radian=30°

radius r =9ft

the area of the sector=30°/360×π×r²

=30/360×22/7×9²=21.214ft²

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Draw a line representing the “rise” and a line representing the “run” of the line. State the slope of the line in the simplest f
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Answer:

the rise would be the part of the line that is going up, and the run is the part of the line that is moving allong the x axis

Step-by-step explanation:

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2 years ago
Please help with this ☝️
kipiarov [429]
The two angles (6x+4) and 32 degrees are complementary angles. They add to 90 degrees. The two angles are adjacent and form a right angle. The right angle marker is the square marker. Two adjacent right angles form a straight angle (180 degrees)

Add up the angles and set the sum equal to 90. Then solve for x
(6x+4) + (32) = 90
6x+4 + 32 = 90
6x+36 = 90
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Since x = 9, this means that
6x+4 = 6*9+4 = 54+4 = 58

So the missing angle is 58 degrees (note how 58+32 = 90)

5 0
3 years ago
Read 2 more answers
Even though the population standard deviation is unknown, an investigator uses z rather than the more appropriate t to test a hy
alexandr1967 [171]

Answer:

The true true level of significance of this test is more than 0.01.

Step-by-step explanation:

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Thus, it means the critical value is getting closer to the mean value than the way it should be.

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3 years ago
Divide £24 in ratio 3:5
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so 24 will be divided into units, where the first thing gets 3 units and the second 5 units. In total those are 3+5=8 units.


so each unit will have 24/8=4

so the division into the two numbers is like this: the first one gets 3 units (3*4=12) and the second 5 (5*4=20)
so it's 12:20. 


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3 years ago
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Zepler [3.9K]

Answer:

x<=-2

Step-by-step explanation:

-6<10-4x>=18

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7 0
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