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
TEA [102]
3 years ago
15

The boys kept adding sand, and ten minutes later the volume of the sand cone had increased by 30%. What is the exact volume of t

he sand cone now? (Show your work. Remember you can draw a picture to help you solve the problem.)
Mathematics
1 answer:
RideAnS [48]3 years ago
5 0

Answer:

a) 84π b) 109.2π

Step-by-step explanation:

The formula to find this is v=πr^2h/3

r=d/2. so the radius (r) is 6 because you have to divide the diameter (12) by 2. and the height is 7. so, 6^2=36 and 36x7=252.

252/3=84

and because the question is asking for the EXACT value, you need to just put the pi symbol next to it. Final answer for a is 84π

B) you need to find 30% of 84, which is 25.2 and add it to 84, and you will get 109.2! Final answer is 109.2π.

You might be interested in
What is the value of X
ExtremeBDS [4]
\dfrac{6}{9}=\dfrac{x+3}{3+9}\\
\dfrac{2}{3}=\dfrac{x+3}{12}\\
3(x+3)=24\\
x+3=8\\
x=5
8 0
3 years ago
Martin finds a shirt on sale for 20% off at a department store. The original price was $20. Martin must also pay a 7.5% sales ta
mars1129 [50]

Answer: You will pay $13.52 for this shirt.

Step-by-step explanation: 0.9435

Since the tax is 7.5%, you have to multiply 12.58 by 7.5% to find the amount of money paid as tax.

7.5% = 0.075

12.58 x 0.075 = 0.9435

Since we are dealing with money we have to round to the nearest hundredth -- 0.9435 = 0.94

Then to find the final cost of the shirt, we have to add 12.58 and 0.94 to get  $13.52.

3 0
3 years ago
Read 2 more answers
How many three-fourths are in 2
Elis [28]
3/4 times x=2
times both sides by 4/3 to clear fraction (4/3 times 3/4=12/12=1)
1x=8/3
there are 8/3 of them in 2

6 0
3 years ago
Read 2 more answers
Marking as brainyest PLEASE HELP
trasher [3.6K]

Answer:

C) f(x) increases by 900%

Step-by-step explanation:

The rate of change is

f(4) - f(3)

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

4-3

f(4) = 9*4 = 36

f(3) = 9*3 = 27

36 -27

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

4-3

9

-----

1

The rate of change is 9

To change to a percent, multiply by 100%

9*100% = 900%

5 0
3 years ago
Read 2 more answers
Find two decimals with a product between 1 and 2
Lemur [1.5K]
Here is a method that makes it seem easier. 
<span>Write down any number between 51 and 59. </span>
<span>For example you might choose 57 = 3*19 </span>
<span>Divide both numbers by 10 and write the answer as </span>
<span>0.3 * 1.9 = 0.57</span>
4 0
3 years ago
Other questions:
  • Tiffany is monitoring the decay of two radioactive compounds in test tubes at her lab. Compound A is continuously decaying at a
    9·1 answer
  • Jaffrey was offered a job at $950 per month with a $22 increase every month for the first year. How much money can he make in th
    13·1 answer
  • Solve by using square roots.<br> ​ 2(x−7)2−8=10 <br> ​​​​​
    14·1 answer
  • Can u please help me. just zoom in to see better help me plz ​
    14·2 answers
  • Which of the following expressions is equivalent to?
    7·1 answer
  • A high school student hires a trainer to help him get ready for football season. The trainer charges $100 plus $75 an hour for e
    6·2 answers
  • If jack has 336473894875785686598685965867$ and spends 67843993$ how much money does he have left?
    11·1 answer
  • length and breadth of a cuboid are 13 cm and 8 cm respectively if the volume of a cube it is 40 cm find the height of the cubiod
    7·1 answer
  • A cognitive psychologist studying reading comprehension wanted to know what would happen if all college students were taught bet
    14·1 answer
  • 5.) 3x^2 - 13x + 4 = 0
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!