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
Alexxx [7]
3 years ago
12

I need help on this question

Mathematics
1 answer:
guapka [62]3 years ago
8 0
The formula is pi r2 h

3.14*4*5
3.14*20
62.8
You might be interested in
What is the equation of the line of reflection that maps
Gennadij [26K]
Reflecting over the y-axis
6 0
3 years ago
A boat that costs $8550 decreases in value by 12% per year. How much will the boat be worth after 3 years?
erastovalidia [21]
You have to take $8,550 times 0.12 (12%) to find out the number it is being decreased by.
8,550 x 0.12 = 1,026
And then, you have to subtract 1,026 from 8,550 three times for three years and your answer becomes 5,472.
$5,472
3 0
3 years ago
The total length of pencils A, B and C is 29 cm. Pencil a is 11 cm shorter then pencil B, and pencil B is twice as long a pencil
satela [25.4K]

The length of pencil A is 5 cm

<em><u>Solution:</u></em>

Let the length of pencil A be "x"

Let the length of pencil B be "y"

Let the length of pencil C be "z"

<em><u>The total length of pencils A, B and C is 29 cm</u></em>

Therefore,

length of pencil A + length of pencil B + length of pencil C = 29

x + y + z = 29 ------------ eqn 1

<em><u>Pencil A is 11 cm shorter then pencil B</u></em>

x = y - 11 ------- eqn 2

<em><u>Pencil B is twice as long a pencil C</u></em>

y = 2z

z = \frac{y}{2} ------ eqn 3

<em><u>Substitute eqn 2 and eqn 3 in eqn 1</u></em>

y - 11 + y + \frac{y}{2} = 29\\\\2y + \frac{y}{2} = 29 + 11\\\\\frac{4y+y}{2} = 40\\\\5y = 80\\\\y = 16

<em><u>Substitute y = 16 in eqn 2</u></em>

x = 16 - 11

x = 5

Thus length of pencil A is 5 cm

5 0
3 years ago
What is the expression equivalent to xy ^ 2/9
DochEvi [55]

Answer:

hi someone help me too

Step-by-step explanation:

6 0
3 years ago
For all values of x, f(x)=x2+3x and g(x)=x-4
Liono4ka [1.6K]

Answer:

Question is not understandable....

7 0
2 years ago
Other questions:
  • I need to solve this problem
    15·1 answer
  • I need help??!!!! 3s(s – 8) = 0 s = or s = <br><br><br><br><br> [/tex]
    5·1 answer
  • Select the correct answer.
    11·1 answer
  • Find the rectangular coordinates of the point with the polar coordinates ordered pair negative 3 comma 5 pi divided by 3. (-3, (
    8·2 answers
  • An object is launched from a platform. It's height in meters, x seconds after the launch is modeled by:
    5·1 answer
  • you have a 5-inch by 7-inch picture that you framed. When you hung the picture, you found that the entire area is 69.56 in. What
    13·2 answers
  • Mitch is buying candy bars for his friends. he wants to give 2 bars to each friend, and he wants to have 10 spare bars.
    6·1 answer
  • Can someone help please I’ll give brainliest!
    6·2 answers
  • The canteen made 15 liters of soup. By the afternoon they had sold
    15·1 answer
  • What is the measure of m?<br> 6<br> 3<br> 18<br> n<br> m =<br> =<br> [?]
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!