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Levart [38]
3 years ago
12

Will give brainiest answer, I need step-by-step answer

Mathematics
1 answer:
Korvikt [17]3 years ago
6 0

Answer: Choice A

The volume expression is 4/3 times pi times (3x)^3

===================================================

The volume of a sphere is found through the formula

V = (4/3)*pi*r^3

so we start with the fraction 4/3, multiply it with pi, and then multiply it with r^3

In this case, the radius is r = 3x because this is half of the diameter d = 6x

We simply replace the r with 3x in that formula above

V = (4/3)*pi*r^3

V = (4/3)*pi*( r )^3

V = (4/3)*pi*(3x)^3 ... replace r with 3x

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Find the approximate circumference of a circle with a diameter of 100 yards.
elixir [45]

Answer:

D. 314 yds

Step-by-step explanation:

Given:

Diameter = 100 yds

Required;

Circumference of the circle

Solution:

Circumference of circle = πd

Plug in the value

Circumference = π × 100

= 314 yds (nearest whole number)

5 0
3 years ago
Given that a randomly chosen flight arrives on time, what is the probability that it arrives in Philadelphia (PHL)?
olga55 [171]

Using concepts of probability, it is found that there is a 4.7% probability that it arrives in Philadelphia (PHL).

<h3>What is a probability?</h3>
  • A <em>probability </em>is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.
  • Over a large number of trials, a percentage can also represent the probability of  single event.

In this question, researching the problem on the internet, we have that over a large number of flights, of those which arrived on time, 4.7% of them were in Philadelphia, hence:

  • There is a 4.7% probability that it arrives in Philadelphia (PHL).

You can learn more about probabilities at brainly.com/question/15536019

3 0
2 years ago
Help please!! Need help!! Help me on this one!!
Alexandra [31]

Answer:

66.2 i think sorry if im off

Step-by-step explanation:

5 0
3 years ago
Write an expression equivalent to 3(x-7)
maria [59]

Answer:

3x-21

Step-by-step explanation:

3*x+3*(-7)=3x-21

5 0
4 years ago
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What does the equation x+4=9
Marat540 [252]

Answer:

<h2>You have to isolate x to find the answer. To do this you take your equation and multiply both sides of your equation by negative four. x−4=9 then becomes x−4×−4=9×−4 . As a final result you obtain x=−36</h2>

Step-by-step explanation:

<h2>I HOPE IT'S HELP </h2>
4 0
3 years ago
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