1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ber [7]
3 years ago
8

Find the volume of a sphere with a diameter of 25 cm. Approximate pi as 3.14 and round your answer to the nearest hundredth.

Mathematics
1 answer:
Sholpan [36]3 years ago
7 0

Answer: The volume of the sphere is 8177.08

Step-by-step explanation:

v= 4/3nr^3

v= 4/3*3.14*1953.125

v= 8177.08

You might be interested in
Write an equation of the line
stellarik [79]
Y = -2 + 6 should be the equation
5 0
3 years ago
A rectangular book measures 18 x 9. What is the length of its diagonal? Round your answer to the nearest tenth
avanturin [10]

Answer:

20.1246118 or 20.12

Step-by-step explanation:

First draw the box with the diagonal, as you can see it is split into 2 equal right triangles. Now use the pythagorean theorem (a^2+b^2=c^2) to find the length of the diagonal

6 0
3 years ago
How do you add vectors? Add the vector <3,4> to the vector that goes 7 units at an angle of 2π/3.
lawyer [7]

Answer:

The sum of the two vectors is the vector <-0.5 , 4+3.5\sqrt{3} >

Step-by-step explanation:

The horizontal component (x) of a vector whose magnitude is b units and its direction is Ф° is b cos Ф

The vertical component (y) of a vector whose magnitude is b and its direction is Ф is b sin Ф

The vector is <b cos Ф , b sin Ф>

∵ The vector goes 7 units at an angle \frac{2\pi }{3}

- That means its magnitude is 7 and its direction is  \frac{2\pi }{3}

∴ x = 7 cos(  \frac{2\pi }{3} )

∴ y = 7 sin(  \frac{2\pi }{3} )

∵ cos(  \frac{2\pi }{3} ) =  -\frac{1}{2}

∵ sin(  \frac{2\pi }{3} ) =  \frac{\sqrt{3}}{2}

- Substitute them in x and y

∴ x = (7)( -\frac{1}{2} )

∴ x = -3.5

∴ y = (7)( \frac{\sqrt{3}}{2} )

∴ y = 3.5\sqrt{3}

∴ The vector is <-3.5 , 3.5\sqrt{3}>

Now lets add the vectors by adding xs and ys components

∵ <3 , 4> + <-3.5 , 3.5\sqrt{3} > = <3 + -3.5 , 4 + 3.5\sqrt{3} >

∴  <3 , 4> + <-3.5 , 3.5\sqrt{3}> = <-0.5 , 4+3.5\sqrt{3} >

∴ The sum of the two vectors is the vector <-0.5 , 4+3.5\sqrt{3} >

5 0
3 years ago
A group of students is collecting books to add to their librarby. The table shows the number of books in the librarby after 1, 3
Grace [21]

Answer:

(7,48)

Step-by-step explanation

the books go up by ten  and the days go up by 2

6 0
3 years ago
Read 2 more answers
The perimeter of a hexagon with all equal sides<br>is 9.0m. How long is each side?​
natali 33 [55]

Answer:

1.5m

Step-by-step explanation:

A hexagon has 6 sides,

so divide 6 by 9.0m

you get 1.5m

7 0
3 years ago
Other questions:
  • Three identical coins, labeled A, B, and C in the figure, lie on three corners of a square 10.0 cm on a side. Determine the x co
    7·2 answers
  • 65 POINTS!!! Amy works at the Apple Store at a commission rate of 3%. Ipads are 18% off on Mac Mondays. She helps a customer who
    12·1 answer
  • 6. You must start with what mathematical operator to create a formula? A. + B. - C. * D. =
    7·1 answer
  • The point E(3,3) is rotated 90 degrees clockwise around the orgin. What are the coordinates of the resulting point E
    11·1 answer
  • Select the property of equality used to arrive at the conclusion. if 1/3 x=5 then x=15 the multiplication property of equality t
    8·1 answer
  • A casino features a game in which a weighted coin is tossed several times. The table shows the probability of each payout amount
    11·1 answer
  • Find the surface area of the prism.
    15·2 answers
  • Identify the area of the trapezoid.
    10·2 answers
  • For each graph, determine whether x and y are proportional.
    10·1 answer
  • Help help help help help help help help help help help
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!