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Lelu [443]
3 years ago
5

Anyone help!!!! Please I grant brainliest.

Mathematics
2 answers:
lakkis [162]3 years ago
7 0

Answer:

hope this helps you.........

Masja [62]3 years ago
4 0

Length of arc = 11 cm

Answer:

Area of sector =115.5 square cm

Step-by-step explanation:

Length of arc =  \frac{30 \degree}{360 \degree}  \times 2 \times  \frac{22}{7}  \times 21 \\  \\  = \frac{1}{12}  \times 2 \times  22  \times 3 \\  \\  = \frac{1}{12}  \times 6 \times  22\\  \\  = \frac{1}{2}  \times  22\\  \\  = 11 \: cm \\  \\  \\  \\ area \: of \: sector =  \frac{ 30 \degree}{360 \degree}  \times \pi {r}^{2}  \\  \\  =  \frac{1}{12}  \times  \frac{22}{7}  \times  {21}^{2}  \\  \\  =  \frac{1}{12}  \times  \frac{22}{7}  \times 21 \times 21 \\  \\  = 115.5 \:  {cm}^{2}  \\

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n200080 [17]
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If y varies directly with x, and y = 2 when x = −4, what is the value of y when x = 20
Klio2033 [76]

Answer:

y = - 10

Step-by-step explanation:

Given that y varies directly with x then the equation relating them is

y = kx ← k is the constant of variation

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3 years ago
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Slav-nsk [51]

9514 1404 393

Answer:

  • x = 17
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Step-by-step explanation:

In the left problem, you use the fact that <em>the sum of the segment lengths is equal to the overall length</em>.

  AC +CB = AB

  (3x -4) +(x -2) = 62

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  4x = 68 . . . . . . . add 6

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__

In the right problem, you use the fact that <em>the sum of the angles is equal to the overall angle</em>. Here, that overall angle is a linear angle, so measures 180°.

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  (5y +3) +(2y -5) = 180

  7y = 182 . . . . . . . . . . . . . . collect terms, add 2

  y = 26 . . . . . . . . . . . . . . . .divide by 7

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Whats the area of x=9 ft, x=22ft, and z=109*
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