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3 years ago

A circle with radius 10 has sector with a central angle of 2/5 pi radians.

Mathematics

2 answers:

Gnom [1K]3 years ago

8 0

Sry I really don’t know I would help but it got me confused

Helen [10]3 years ago

6 0

Answer: 20pi

Step-by-step explanation:

Correct On Khan Academy!!

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If an additional dot is added to the set in the 3 column, how will the mean change? What will the new mean be?

Westkost [7]

Answer:

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2 years ago

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Graph each equation using a table. 5x + 4y = 20

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2 years ago

What does difference of squares mean? How can you recognize it when looking at an expression?

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2 years ago

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IN A CLASS OF 30 STUDENTS 13 OF THEM ARE BOYS WHAT PERCENTAGE ARE GIRLS?

mestny [16]

Class of students - number of students that are boys = numbers of students that are girls

30 - 13 = 17

To change the number of students that are girls into percentage...

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3 years ago

Find x<br> A. 22√2<br> B. 22<br> C. 11√3/3<br> D. 11√3

mel-nik [20]

Answer

$22\sqrt{2}$

Step-by-step explanation:

First we gave a name to the side that is common for both triangles, can be Y for example.

Using trigonometric functions we can make a relationship between the two angles that we have and the magnitud of the side.

$sin(45)=\frac{11}{Y} \\$ , Because sin(x)= op/hip

$cos(60)=\frac{Y}{x}$ , Because con(x)=ad/hip

Having this equations, we can solve the system and find x

$Y=\frac{11}{sin(45)} \\Y=cos(60)*x$

we equal Y and solve

$\frac{11}{sin(45)}=cos(60)*x\\ x=\frac{11}{sin(45)*cos(60)} \\x=\frac{11}{\frac{\sqrt{2} }{2} *\frac{1}{2} } \\x=\frac{11}{\frac{\sqrt{2} }{4} } \\x=\frac{44}{\sqrt{2} }\\$

Then we rationalize

$x=22\sqrt{2}$

Hope you like it!

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2 years ago

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