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ludmilkaskok [199]
2 years ago
10

Find the area of the sector

Mathematics
1 answer:
Setler [38]2 years ago
6 0

Answer:

10:

7/4π = 5.5(1decimql place)

11:

50π = 157.1(1 decimal place)

Step-by-step explanation:

the equation is (angle/360) X πr^2

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What is the positive difference between -8. and 9​
Artemon [7]

Answer:

1

Step-by-step explanation:

9-8=1

Hope that this is helpful.

Have a nice day.

7 0
2 years ago
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A rectangle is to be inscribed in an isosceles right triangle in such a way that one vertex of the rectangle is the intersection
svet-max [94.6K]

Answer:

x  =  2  cm

y  = 2  cm

A(max) =  4 cm²

Step-by-step explanation: See Annex

The right isosceles triangle has two 45° angles and the right angle.

tan 45°  =  1  =  x / 4 - y        or     x  =  4  -  y     y  =  4  -  x

A(r)  =  x* y

Area of the rectangle as a function of x

A(x)  =  x  *  (  4  -  x )       A(x)  =  4*x  -  x²

Tacking derivatives on both sides of the equation:

A´(x)  =  4 - 2*x             A´(x)  =  0            4   -  2*x  =  0

2*x  =  4

x  =  2  cm

And  y  =  4  - 2  =  2  cm

The rectangle of maximum area result to be a square of side 2 cm

A(max)  = 2*2  =  4 cm²

To find out if A(x) has a maximum in the point  x  =  2

We get the second derivative

A´´(x)  =  -2           A´´(x)  <  0   then A(x) has a maximum at  x = 2

5 0
2 years ago
2x + 16 = 22x<br><br> Variables on both sides
Nonamiya [84]

answer: Subtract sixteen from both sides of the equation

2 +16 -16=22x -16

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8 0
2 years ago
The line x - y = 5 passes through<br> (-5, 0)<br> (0, 5)<br> (0, -5)
neonofarm [45]

The line x - y = 5 passes through the point (0, -5)

3 0
3 years ago
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What is f(4) for the function f(x)= 6x+7?
elena-14-01-66 [18.8K]

Answer:

31

Step-by-step explanation:

f(4) = 6x4 + 7

= 24 + 7

= 31

7 0
3 years ago
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