3 years ago

How do you find the arc length in a circle given any angle?

1 answer:

8 0

You find the circumference and multiply it by the central angle. If the central angle is in degrees, you divide that by 360. If the central angle is in radians, you divide by 2pi.

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A row of plaques covers 120 square feet of space along a wall.If the plaques are 3 feet tall, what length of the wall do they co

seropon [69]

Area = Length x Width(height).

You are given the area and the width(height).

You can find the length by dividing the area by the width:

Length = 120 / 3 = 40 feet.

6 0

4 years ago

In a class of 48 children there are six more girls than boys how many boys are in the class

shtirl [24]

Answer: there are 16 boys in the class which means not ever girl can have a bf

Step-by-step explanation:

3 0

3 years ago

Find all the zeroes of the equation(with simple steps).

uysha [10]

Answer-

The zeros are, $5,\ -5,\ 4i,\ -4i$

Solution-

$\Rightarrow -3x^4+27x^2+1200=0$

$\Rightarrow -3(x^2)^2+27(x^2)+1200=0$

Here,

a = -3, b = 27, c = 1200

So,

$x^2=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}$

$=\dfrac{-27\pm \sqrt{-27^2-4\cdot (-3)\cdot 1200}}{2\cdot (-3)}$

$=\dfrac{-27\pm \sqrt{729+14400}}{-6}$

$=\dfrac{-27\pm 123}{-6}$

$=\dfrac{-27+123}{-6},\ \dfrac{-27- 123}{-6}$

$=\dfrac{96}{-6},\ \dfrac{-150}{-6}$

$=-16,\ 25$

So,

$\Rightarrow x^2=25,\ -16$

$\Rightarrow x=\sqrt{25},\ \sqrt{-16}$

$\Rightarrow x=5,\ -5,\ 4i,\ -4i$

8 0

3 years ago

The length of a rectangle is 8 more than the width the area.is 84 square centimeters find the length and width of the rectangle

Aleksandr [31]

The length is 14 and the width is 6. 14 times 6 is 84, which is the area and 14 minus 6 is 8, which makes the length 8 more than the width.

7 0

3 years ago

What is an equation of the axis of symmetry of the parabola represented by y = -x+ 6x -4?

laila [671]

Not a conic section. No equation, I think

3 0

3 years ago