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2 years ago

2. In order to go to college, Howard goes from working full-time making $33,000 per year to working part-time at half the

Mathematics

1 answer:

Ipatiy [6.2K]2 years ago

4 0

Answer:4

Step-by-step explanation:

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PLEASE SHOW WORK

CaHeK987 [17]

(C)

Step-by-step explanation:

The volume of the conical pile is given by

$V = \dfrac{\pi}{3}r^2h$

Taking the derivative of V with respect to time, we get

$\dfrac{dV}{dt} = \dfrac{\pi}{3}\dfrac{d}{dt}(r^2h)$

$\:\:\:\:\:\:\:= \dfrac{\pi}{3}\left(2rh\dfrac{dr}{dt} + r^2\dfrac{dh}{dt}\right)$

Since r is always equal to h, we can set

$\dfrac{dr}{dt} = \dfrac{dh}{dt}$

so that our expression for dV/dt becomes

$\dfrac{dV}{dt} = \dfrac{\pi}{3}\left(3r^2\dfrac{dh}{dt}\right)$

$\:\:\:\:\:\:\:= \pi r^2\dfrac{dh}{dt}$

Solving for dh/dt, we get

$\dfrac{dh}{dt} = \dfrac{1}{\pi r^2}\dfrac{dV}{dt}$

$\:\:\:\:\:\:\:= \dfrac{1}{9\pi\:\text{m}^2}(36\:\text{m}^3\text{/s})$

$\:\:\:\:\:\:\:= \dfrac{4}{\pi}\:\text{m/s}$

7 0

3 years ago

PLEASE HELP ME FFS

AnnZ [28]

Answer:

55.74

Step-by-step explanation:

<em>Since the culture was tested and then the countdown started, you need to multiply the initial value by 3.5. Since it is tested once every 15 minutes, it will be tested two more times by the time 30 minutes is up; a total of 3 times tested.</em>

1.3 x 3.5 = 4.55

4.5 x 3.5 = 15.925

15.925 x 3.5 = 55.7375

7 0

3 years ago

the most abundant element in earth’s continental crust, by weight, is _____. calcium silicon iron oxygen

Lelechka [254]

<span>The most abundant element in earth’s continental crust by weight is Oxygen</span>

7 0

2 years ago

Read 2 more answers

Math question ,how ?

Troyanec [42]

Let x be height of the shadow
30/15 = 90/x
Do cross multiplication
30x =1350
x = 45

Let h= height of the screen
1/4 of 45 is 11.25
H = 11.25 + 45
H= 56.25

There's your answer. I hope I did it right.

8 0

3 years ago

Read 2 more answers

Which angle has a positive measure?

ohaa [14]

Answer:

what angles

Step-by-step explanation:

i do not see anything to solve

3 0

2 years ago