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3 years ago

Find the radius of a circle with the circumference of 28.27 km. Explain your answer

Mathematics

2 answers:

maxonik [38]3 years ago

5 0

Answer:

radius= 4.5

Step-by-step explanation:

to find the radius of a circle given circumference you have to use the formula:

r=C/2π

divide: 28.27 / 2π

this equals

4.5

your welcome!

Ivanshal [37]3 years ago

3 0

Answer:

4.5

Step-by-step explanation:

r=c/2*pi.....28.27/2 times 3.14= 4.5 Hope this helped!

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You buy four packages of shoelaces. You pay with a $10 bill and receive $3.24 in change. Determine the price of each package.

Mnenie [13.5K]

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3 years ago

A catapult launches a boulder with an upward velocity of 120 ft/s. The height of the boulder, h,

Vlad1618 [11]

Answer:

Reaches a maximum height of 235.00 feet in 3.75 seconds.

Step-by-step explanation:

The height of the boulder, h, in feet after t seconds is given by the function is given by :

$h=-16t^2+120t+10$ .....(1)

For maximum height, put $\dfrac{dh}{dt}=0$

i.e.

$\dfrac{d(-16t^2+120t+10)}{dt}=0\\\\-32t+120=0\\\\32t=120\\\\t=3.75\ s$

Put t = 3.75 in equation (1). So,

$h=-16(3.75)^2+120(3.75)+10\\\\h=235\ \text{feet}$

So, the boulder's maximum height is 235 feets and it takes 3.75 s to reach to its maximum height.

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3 years ago

In order to solve for x in the equation 3x - 18 = 78, What is the FIRST step?

anygoal [31]

Answer:

add 18 to both sides, giving you 3x = 96

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3 years ago

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Answer:

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3 years ago

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3 years ago