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padilas [110]
3 years ago
7

A sector of a circle has a central angle of 45 . Find the area of the sector if the radius of the circle is 15 cm.

Mathematics
1 answer:
prohojiy [21]3 years ago
6 0

Answer:

A = 28.125 * pi cm^2

A = 88.357  cm^2


Step-by-step explanation:

Area of a sector is 1/2 r^2 theta  where theta is in radians

convert 45 degrees to radians

theta = 45 * pi/180 = pi/4

A = 1/2 * 15^2 * pi/4

A =1/2 * 225 * pi/4

A = 28.125 * pi cm^2

A = 88.357  cm^2


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Answer:

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Step-by-step explanation:

well first u gotta use order of operations. So first u would do

10 x 4 which = 40

next u would hafta do 40 / -2 which = -20

and finally -20 + -8 =-28

hope this helped!!

6 0
3 years ago
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Find the values of x and y. <br> x + 7i = y − yi
lys-0071 [83]

Answer: X = y - yi - 7i

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Step-by-step explanation: for the case of (X) you only need to pass the 7i to the other side with the subtraction sign (-7i), then we get this equation:

x + 7i = y − yi

X = y - yi - 7i

in the case of the (Y), first we select the common multiple.

y - yi = y(1 - i)

if we replace it in the original expression, we get the following equation:

x + 7i = y(1 - i)

after that you can pass the value (1 - i) to the other side dividing,

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6 0
3 years ago
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Explain the importance of graphs in interpreting data.
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3 years ago
Jarvis left out a statement from the proof shown.which statement is best explained by the corresponding angles postulate
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7 0
3 years ago
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Suppose a basketball player has made 390 out of 434 free throws. If the player makes the next 2 free throws, I will pay you $40.
alukav5142 [94]

Answer: a) -$0.19, b) -$111.72 .

Step-by-step explanation:

Since we have given that

Number of free throws = 434

Number of throws made by them = 390

Amount for making the next 2 free throws = $40

Amount otherwise he has to pay = $169

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Expected value of success in next 2 free throws = \dfrac{390}{434}\times \dfrac{391}{435}=0.8077

Expected value would be

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588\times -0.19\\\\=-\$111.72

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8 0
3 years ago
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