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Eddi Din [679]
2 years ago
13

true or false. the absolute value of. number will always be greater than the number itself. justify ur answer

Mathematics
1 answer:
swat322 years ago
6 0

false have a great day

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Water pours into a tank at the rate of 2000 cm3/min. The tank is cylindrical with radius 2 meters. How fast is the height of wat
Gennadij [26K]

Volume of water in the tank:

V=\pi (2\,\mathrm m)^2h=\pi(200\,\mathrm{cm})^2h

Differentiate both sides with respect to time <em>t</em> :

\dfrac{\mathrm dV}{\mathrm dt}=\pi(200\,\mathrm{cm})^2\dfrac{\mathrm dh}{\mathrm dt}

<em>V</em> changes at a rate of 2000 cc/min (cubic cm per minute); use this to solve for d<em>h</em>/d<em>t</em> :

2000\dfrac{\mathrm{cm}^3}{\rm min}=\pi(40,000\,\mathrm{cm}^2)\dfrac{\mathrm dh}{\mathrm dt}

\dfrac{\mathrm dh}{\mathrm dt}=\dfrac{2000}{40,000\pi}\dfrac{\rm cm}{\rm min}=\dfrac1{20\pi}\dfrac{\rm cm}{\rm min}

(The question asks how the height changes at the exact moment the height is 50 cm, but this info is a red herring because the rate of change is constant.)

7 0
3 years ago
Someone plzz help me understand this i am so confused
ad-work [718]

Answer:

XA = 9

AY = 9

XY = 18

Step-by-step explanation:

hope this helps!!

4 0
2 years ago
Distribute and simply 7-2(x-5)+3x
KonstantinChe [14]

The given expression is

7-2(x-5)+3x

First, we use the distributive property to get rid of the parenthesis.

7-2x+10+3x

Then, we reduce like terms. -2x and 3x are like terms, also 7 and 10 are like terms.

3x-2x+10+7=x+17<h2>Therefore, the simplest form of the given expression is <em>x + 17</em>.</h2>
4 0
8 months ago
Help I have no clue what I'm doING​
WINSTONCH [101]
The question asks you to find the total amount of rain after each hour, and has given you the ratio of 1.5 cm of rain in an hour. Therefore to find the rest, you’ll need to multiply the number of hours by the amount of rain in an hour:
2hrs - 3 cm
3hrs - 4.5 cm
4hrs - 6 cm
5hrs - 7.5 cm

I hope this helps and that I’m right! Good luck!! :)
5 0
1 year ago
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tony and some friends went to the movies. They bought 4 drinks and 2 tubs of popcorn and spent a total of $32.50 on the food. Ea
poizon [28]
X=popcorn
x - 3.50=drink
2x+ 4(x-3.50)=32.50
2x+4x-14=32.50

solve for x
8 0
3 years ago
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