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
Vesna [10]
3 years ago
5

What is the exact volume of the cone?

Mathematics
2 answers:
lions [1.4K]3 years ago
4 0

Answer:

THE ANSWER IS D <3

Step-by-step explanation:

soldier1979 [14.2K]3 years ago
3 0
The Answer I got is D
You might be interested in
a hat contains 2 red apples and 3 green apples. a bucket contains 7 red apples and 3 green apples. a container is selected at ra
Leokris [45]

Answer:

15

Step-by-step explanation:

8 0
3 years ago
Oil is pumped continuously from a well at a rate proportional to the amount of oil left in the well. Initially there were millio
JulijaS [17]

Answer:

The amount of oil was decreasing at 69300 barrels, yearly

Step-by-step explanation:

Given

Initial =1\ million

6\ years\ later = 500,000

Required

At what rate did oil decrease when 600000 barrels remain

To do this, we make use of the following notations

t = Time

A = Amount left in the well

So:

\frac{dA}{dt} = kA

Where k represents the constant of proportionality

\frac{dA}{dt} = kA

Multiply both sides by dt/A

\frac{dA}{dt} * \frac{dt}{A} = kA * \frac{dt}{A}

\frac{dA}{A}  = k\ dt

Integrate both sides

\int\ {\frac{dA}{A}  = \int\ {k\ dt}

ln\ A = kt + lnC

Make A, the subject

A = Ce^{kt}

t = 0\ when\ A =1\ million i.e. At initial

So, we have:

A = Ce^{kt}

1000000 = Ce^{k*0}

1000000 = Ce^{0}

1000000 = C*1

1000000 = C

C =1000000

Substitute C =1000000 in A = Ce^{kt}

A = 1000000e^{kt}

To solve for k;

6\ years\ later = 500,000

i.e.

t = 6\ A = 500000

So:

500000= 1000000e^{k*6}

Divide both sides by 1000000

0.5= e^{k*6}

Take natural logarithm (ln) of both sides

ln(0.5) = ln(e^{k*6})

ln(0.5) = k*6

Solve for k

k = \frac{ln(0.5)}{6}

k = \frac{-0.693}{6}

k = -0.1155

Recall that:

\frac{dA}{dt} = kA

Where

\frac{dA}{dt} = Rate

So, when

A = 600000

The rate is:

\frac{dA}{dt} = -0.1155 * 600000

\frac{dA}{dt} = -69300

<em>Hence, the amount of oil was decreasing at 69300 barrels, yearly</em>

7 0
2 years ago
In the 1990s the demand for personal computers in the home went up with household income. For a given community in the 1990s, th
WITCHER [35]

Answer:

a) 0.5198 computers per household

b) 0.01153 computers

Step-by-step explanation:

Given:

number of computers in a home,

q = 0.3458 ln x - 3.045 ;   10,000 ≤ x ≤ 125,000

here x is mean household income

mean income = $30,000

increasing rate, \frac{dx}{dt} = $1,000

Now,

a) computers per household are

since,

mean income of  $30,000 lies in the range of 10,000 ≤ x ≤ 125,000

thus,

q = 0.3458 ln(30,000) - 3.045

or

q = 0.5198 computers per household

b) Rate of increase in computers i.e \frac{dq}{dt}

\frac{dq}{dt} = \frac{d(0.3458 ln x - 3.045)}{dt}

or

\frac{dq}{dt}=0.3458\times(\frac{1}{x})\frac{dx}{dt} - 0

on substituting the values, we get

\frac{dq}{dt}=0.3458\times(\frac{1}{30,000})\times1,000

or

= 0.01153 computers

6 0
3 years ago
What is the greatest common factor of 3062, 8062, and 2013?
Zanzabum
One
the gcf all the numbers is 1
6 0
3 years ago
Lithium has 3 protons. how many neutrons are in the isotope lithium-8?
bulgar [2K]
5 neutrons in lithium-8
7 0
3 years ago
Read 2 more answers
Other questions:
  • In statistics, the middle value of an ordered set of values is called what?
    15·1 answer
  • Find the partial derivatives of the function w=4r2+6s2+
    10·1 answer
  • Which are partial products for 68 × 43?
    10·1 answer
  • Subtract 7 from 16 and then multiply by 4 which expression shows this calculation
    10·1 answer
  • What equation represents a parabola with a focus of (0,4) and a directrix of y=2
    7·1 answer
  • A study was conducted to investigate the relationship between the resale price, y (in hundreds of dollars), and the age, x (in y
    11·2 answers
  • The Eagles basketball team scored 12 more than 2 times as many points in the last game of the season than in the first game. Whi
    6·1 answer
  • A 5-lb bag of apples costs $4.50, and an 8-lb bag of the same type of apples costs $7.52. Greg found the unit price, which is th
    7·1 answer
  • A trapezoid has sides of length 5.2 miles,9.3 miles,5.2miles,and 16.1 miles.what is the perimeter?
    7·1 answer
  • A drawing of a man is 4 inches high. The actual man is 64
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!