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andreyandreev [35.5K]
3 years ago
6

Open Ended Alexandra is working on a float for a parade She is making a sphere out of paper mache She knows the circumference of

a cross section through the center of a sphere. How can Alexandra find the radius of the sphere?​
Mathematics
1 answer:
iogann1982 [59]3 years ago
7 0

Answer:

r=C2

Step-by-step explanation:

C=2r is the equation to find circumference

She needs to work backwards in this case, so:

r=C2

r=The circumference she knows x 2 x 3.14(or 3.14159265359)

-----------------------------------------------------------------------------------------------------------------

<h3><u><em>I would recommend writing/typing all of this(Especially if you need to show you work)!</em></u></h3>

<em><u>I hope this helped!</u></em>

<u />

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Firewood is often sold by the cord. A cord of wood is a bundle measuring 4 feet by 4 feet by 8 feet. What is the volume of a cor
OleMash [197]
Volume = Length × width × height

V = 4×4×8 = 128 cubic ft
4 0
3 years ago
What is the simplest form of this expression? (x + 7)(3x − 8) A. 3x2 + 2x − 15 B. 3x2 + 29x − 1 C. 3x2 − 29x − 56 D. 3x2 + 13x –
Lorico [155]

━━━━━━━☆☆━━━━━━━

▹ Answer

<em>D. 3x² + 13x - 56</em>

▹ Step-by-Step Explanation

(x + 7)(3x - 8) (<em>Using FOIL method)</em>

x * 3x - 8x + 7 * 3x - 7 * 8

3x² - 8x + 7 * 3x - 7 * 8

3x² - 8x + 21x - 56

3x² + 13x - 56

Hope this helps!

- CloutAnswers ❁

Brainliest is greatly appreciated!

━━━━━━━☆☆━━━━━━━

3 0
3 years ago
Read 2 more answers
5/2x - 1.5 = 3.5 what is the value of x
azamat

Answer:

2

Step-by-step explanation:

<em>Add 1.5 to both sides:</em>

5/2x-1.5+1.5=3.5+1.5

5/2x=5

<em>Multiply both sides by 2/5</em>

(2/5)*(5/2x)=(2/5)*(5)

8 0
3 years ago
Sallys basketball team played 6 games . They scored 76 points in the first game , 88 points in each of the next two games , and
Slav-nsk [51]

The expression is 436 + x = 515

The number of points they scored in the last game is 79

Step-by-step explanation:

Sally's basketball team played 6 games

  • They scored 76 points in the first game
  • 88 points in each of the next two games
  • 92 points in each of the following two games
  • The team scored 515 points altogether

We need to write an expression and calculate the number of points they scored in the last game

Assume that the score of the last game is x

∵ Sally's basketball team played 6 games

∵ The score of the first game is 76 points

∵ The score of the next two games is 88 points each

∴ The score of the 2nd game is 88 points and the score

   of the 3rd game is 88 points

∵ The score of each following two games is 92 points

∴ The score of the 4th game is 92 points and the score

   of the 5th game is 92 points

∵ The score of the 6th game is x points

- Add all of them to find the total score of the 6 games

∴ The total score = 76 + 88 + 88 + 92 + 92 + x

- Add the like terms

∴ The total score = 436 + x

∵ The team scored 515 points altogether

- Equate the expression of the total by 515

∴  436 + x = 515

- To find the value of x subtract 436 from both sides

∴ x = 79

∴ The score of the last game is 79 points

The expression is 436 + x = 515

The number of points they scored in the last game is 79

Learn more:

You can learn more about the word problems in brainly.com/question/10557938

#LearnwithBrainly

5 0
4 years ago
A particle moves in the xy plane starting from time = 0 second and position (1m, 2m) with a velocity of v&gt;=2i-4tj^
guapka [62]

Given :

A particle moves in the xy plane starting from time = 0 second and position (1m, 2m) with a velocity of v=2i-4tj  .

To Find :

A. The vector position of the particle at any time t .

B. The acceleration of the particle at any time t .

Solution :

A )

Position of vector v is given by :

d=\int\limits {v} \, dt\\\\d=\int\limits {(2i-4tj)} \, dt \\\\d=(2t)i+\dfrac{4t^2}{2}j\\\\d=(2t)i+(2t^2)j

B )

Acceleration a is given by :

a=\dfrac{dv}{dt}\\\\a=\dfrac{2i-4tj}{dt}\\\\a=\dfrac{2i}{dt}-\dfrac{4tj}{dt}\\\\a=0-4j\\\\a=-4j

Hence , this is the required solution .

5 0
3 years ago
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