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3 years ago

3. Damien paints 1/5 of a room in 5/12 hours what unit rate describes this situation

Mathematics

2 answers:

olga_2 [115]3 years ago

7 0

Answer:

0.48 of the room per hour

Step-by-step explanation:

your welcome

Alexus [3.1K]3 years ago

7 0

It takes 2 1/2 hours to paint each room

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xz_007 [3.2K]

Answer:

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Step-by-step explanation:

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3 years ago

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PLEASE HELP ALSO WILL GET THE BRAINIEST ANSWER!!!! ALSO SHOW YOUR WORK!!!!

MAVERICK [17]

I=PRT
I=Interest
P=principal
R=rate in decimal
T=time in years

1year=12months
72months/12months=6 years
t=6

given
I=8925
P=35000
R=r
T=6

8925=35000*r*6
8925=210000*r
divide both sides by 210000
0.0425=r

the interest rate is 4.25%

6 0

3 years ago

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Find gradient xe^y + 4 ln y = x² at (1, 1)

cricket20 [7]

$xe^y+4\ln y=x^2$

Differentiate both sides with respect to x, assuming y = y(x).

$\dfrac{\mathrm d(xe^y+4\ln y)}{\mathrm dx}=\dfrac{\mathrm d(x^2)}{\mathrm dx}$

$\dfrac{\mathrm d(xe^y)}{\mathrm dx}+\dfrac{\mathrm d(4\ln y)}{\mathrm dx}=2x$

$\dfrac{\mathrm d(x)}{\mathrm dx}e^y+x\dfrac{\mathrm d(e^y)}{\mathrm dx}+\dfrac4y\dfrac{\mathrm dy}{\mathrm dx}=2x$

$e^y+xe^y\dfrac{\mathrm dy}{\mathrm dx}+\dfrac4y\dfrac{\mathrm dy}{\mathrm dx}=2x$

Solve for dy/dx :

$e^y+\left(xe^y+\dfrac4y\right)\dfrac{\mathrm dy}{\mathrm dx}=2x$

$\left(xe^y+\dfrac4y\right)\dfrac{\mathrm dy}{\mathrm dx}=2x-e^y$

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{2x-e^y}{xe^y+\frac4y}$

If y ≠ 0, we can write

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{2xy-ye^y}{xye^y+4}$

At the point (1, 1), the derivative is

$\dfrac{\mathrm dy}{\mathrm dx}\bigg|_{x=1,y=1}=\boxed{\dfrac{2-e}{e+4}}$

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3 years ago

Determine the median of 4 6 8 10 15 20 21

lilavasa [31]

Answer:

i think its 10

Step-by-step explanation:

4 6 8 10 15 20 21

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3 years ago

Please help me answer as soon as possible. Thank u very much. Work is due tomorrow.

Firdavs [7]

The answer is 3 11/12 because the last one said RUNNING and it asked how much did he SWIM. Here is the math.

6/12 + 5/12 = 11/12

1+2=3

3 11/12. Hope this helped!

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4 years ago

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