All categories

3 years ago

What s the length of the arc for the half circle

Mathematics

1 answer:

Andrej [43]3 years ago

3 0

Answer`Step-by-step explanation:

The length of an arc depends on the radius of a circle and the central angle Θ. We know that for the angle equal to 360 degrees (2π), the arc length is equal to circumference. Hence, as the proportion between angle and arc length is constant, we can say that:

Hope that help, at least a bit.

You might be interested in

-5x + 4 = 2x + 16<br> How do I solve this

Cloud [144]

Subtract 2x from both sides then you’d have -7x+4=16 Then you subtract 4 from both sides and you’d get -7x=12. Next you divide both side by -7 so x=1.75 rounded to the nearest hundredth.

8 0

3 years ago

Simplify: 8^2 + 9(12 / 3*2) -7

Naily [24]

Answer:

357 / 2

Step-by-step explanation:

your answer would have been 178.5 but just a reminder always do whats in the exponets

5 0

3 years ago

Math IXL Help!!!!! Quick!!!!! Plzzzzzzzz!!!!!

Oksanka [162]

Answer:

Y=7 X=1

Step-by-step explanation:

if need an explanation please ask

7 0

3 years ago

You have never seen your favorite superhero in real life. Out of curiosity you calculate her height to be 1.57 mm . If the super

hjlf

Answer:

You are at the top of the Empire State Building on the 102nd floor, which is located 373 m above the ground when your favorite superhero flies over the building parallel to the ground at 70.0% the speed of light.

You have never seen your favorite superhero in real life. Out of curiosity you calculate her height to be 1.57 mm . If the superhero landed next to you, how tall would she be when standing?

Step-by-step explanation:

so this problem is from Einstein's special theory of relativity about length contraction.

the formula is given by:

$L'=L\sqrt{1-\beta^2 }$

where $\beta =v/c$

c is speed of light $c=3*10^8 m/s$ and v is velocity of object.

L is called proper length. L' is length that the observer measure in moving frame.

here velocity of object is 70% speed of light. i.e $v=209 854 721 m / s$

so $L=1.57 m$

putting all values

$L'= 1.57m \sqrt{1-(\frac{209854721}{3*10^8})^2 } \\\\L'=1.12m$

4 0

3 years ago

For all parts of this question, use the function y + 2 = 3(x + 4)

vekshin1

i would start by simplifying the equation to get y by itself, you don't need to do this, but it makes it a little easier

y + 2 = 3 ( x + 4) distribute the 3 through the parenthesis

y + 2 = 3x + 12. subtract 2 from both sides

y = 3x +10

now to fill in the chart simply plug in the value of x to see what value of y it produces

y = 3(-2) +10

y = -6+10

y = 4

(-2,4)

y = 3(0) + 10

y = 0 + 10

y = 10

(0,10)

y = 3(2)+10

y = 6 + 10

y = 16

(2,16)

y = 3(4) + 10

y = 12 + 10

y = 22

(4,22)

8 0

3 years ago