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3 years ago

Find the circumference of a circle with a radius of 18 in. Leave your answer in terms of. 36πin. 18πin. 54πin. 324πin.

Mathematics

1 answer:

mario62 [17]3 years ago

4 0

Answer:

36πin

Step-by-step explanation:

<u>Formula for the circumference of a circle=2πr</u>

r=18

2 · 18

=36

36·π

hope this helps

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An oil drilling company drills the same distance each day for 5 days. They started at an elevation of 121.175 feet and ended at

nirvana33 [79]

Answer:

$x=\dfrac{|-246.875-121.175|}{5}$

Step-by-step explanation:

Given that:

Same distance is drilled by the oil drilling company for 5 days.

Initial elevation = 121.175 feet

Final elevation = -246.875 feet

To find:

The equation to find the value of $x$ i.e. the distance drilled each day?

Solution:

To find the distance drilled each day, we need to divide the total distance drilled with the number of days taken to drill the total distance.

Total distance drilled can be found by subtracting the initial elevation from the final elevation and taking modulus because distance can not be negative.

Total distance drilled = | Final elevation - Initial elevation |

Total distance drilled = | -246.875 - 121.175 |

Therefore, we can write the expression as:

$x=\dfrac{|-246.875-121.175|}{5}$

$\Rightarrow x=\dfrac{|-368.05 |}{5} =73.61\ ft/day$

3 0

3 years ago

A restaurant offers delivery for their pizzas.The total cost is a delivery fee added to the price of the pizzas.One customer pay

VikaD [51]

Answer:

x-the cost of one pizza

y-the cost of delivery

2x+y=25

5x+y=58 ->3x=33->X=11->y=3

so,the number of delivered pizzas to the person

num=(80-3)/11=7

Step-by-step explanation:

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3 years ago

Aaliyah needed to get her computer fixed. She took it to the repair store. The technician at the store worked on the computer fo

iren2701 [21]

Answer:

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8 0

3 years ago

Suppose that P(A|B)=0.2, P(A|B')=0.3, and P(B)=0.7. What is the P(A)? Round your answer to two decimal places (e.g. 98.76).

nata0808 [166]

Answer: $P(A) = 0.23$

Step-by-step explanation:

Given :

$P(A/B) = 0.2$

$P(A/B^{1})=0.3$

$P(B)= 0.7$

$P(A) = ?$

From rules of probability :

$P(A) = P(AnB) + P(A n B^{1})$ ........................... equation *

$P(A n B)$ can be written as $P(A/B)$ x $P(B)$

Also , $P(A/B^{1})$ can be written as $P(A/B^{1})$ x $P(B^{1})$

substituting into equation * , we have

$P(A) = P(A/B)$ $P(B) + P(A/B^{1})P(B^{1})$

since P(B) = 0.7, then $P(B^{1}) = 1 - P(B) = 0.3$

so , substituting each values , we have

$P(A) = (0.2)(0.7) + (0.3)(0.3)$

$P(A) = 0.14 + 0.09$

$P(A) = 0.23$

4 0

4 years ago

A circular pond has a diameter of 17 feet. There is pathway around the rim of the pond. What is the length of the pathway?

NeX [460]

Answer:

53.38ft

Step-by-step explanation:

By it asking the length of the pathway, in math terms its just asking you the circumfrence of the pond.

C = 2( $\pi$ )(r)

C = 2(3.14)(17/2)

C = 2(3.14)(8.5)

C = 53.38ft

6 0

3 years ago

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