2 years ago

A circle with area 81 pi has a sector with a central angle of 120 degrees. What is the area of the sector?

Mathematics

2 answers:

Alekssandra [29.7K]2 years ago

6 0

Answer:

27pi

Step-by-step explanation:

120/360 × 81pi

27pi cm²

Savatey [412]2 years ago

4 0

Answer: 27 pi

Step-by-step explanation:

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Strike441 [17]

Answer:

y intercept - (0,-5)

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vertex (-2,-9)

Step-by-step explanation:

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2 years ago

F(2)=20(1.25)^x STEP BY STEP

Nezavi [6.7K]

F(2) = 20(1.25)^x

f(2) = 20(1.25)^2 - plug in 2 to x

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By radical do you mean the square root symbol?

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2 years ago

How would I solve #20

Temka [501]

Answer:

angle 1 = 76 degrees

Step-by-step explanation:

2 angles side by side on a straight line should equal 180 degrees.

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3 years ago

Given z=4+3i evaluate z

DerKrebs [107]

Answer:

Step-by-step explanation:

Assuming we want to evaluate |z|, given that, z=4+3i.

Then, by definition of modulus,

$|x + yi| = \sqrt{ {x}^{2} + {y}^{2} }$

$|4+ 3i| = \sqrt{ {4}^{2} + {3}^{2} }$

$|4+ 3i| = \sqrt{ 16+ 9 } \\ |4+ 3i| = \sqrt{25 } \\ |4+ 3i| = 5$

Therefore the modulus be of the given complex number is 5 units

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3 years ago