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Evgen [1.6K]
3 years ago
8

8r/9 - 15 when r = 27

Mathematics
2 answers:
kupik [55]3 years ago
8 0

Answer:

Your answer is nine

9

mylen [45]3 years ago
7 0

Answer:

9

Step-by-step explanation:

8x27/9-15

8x27= 216

216/9-15

216/9= 24

24-15=9

=9

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Find the distance between the points (-3,4) and(1,-1)
Zina [86]

Answer:

7 units

Step-by-step explanation:

I think

3 0
3 years ago
The radius of a right circular cylinder is increasing at a rate of 9 inches per minute and the height is decreasing at a rate of
pav-90 [236]

Answer:

\frac{dA}{dt}=1840.97 in^{2}/min      

Step-by-step explanation:

The equation of the surface of the right circular cylinder is:

A=2\pi rh+2\pi r^{2}=2\pi(rh+r^{2})

Now, the rate change of this area will be:

Using the change rule

\frac{dA}{dt}=\frac{\partial A}{\partial r}\frac{\partial r}{\partial t}+\frac{\partial A}{\partial h}\frac{\partial h}{\partial t}

Where:                          

  • \frac{\partial h}{\partial t} is the rate change of height (-16 in/min)
  • \frac{\partial r}{\partial t} is the rate change of radius (9 in/min)

 

\frac{dA}{dt}=\frac{\partial A}{\partial r}9+\frac{\partial A}{\partial h}(-16)

\frac{dA}{dt}=2\pi(h+2r)9-2\pi r16=2\pi((h+2r)9-16r)

Now, r = 16 and h = 29

\frac{dA}{dt}=2\pi((29+2*16)9-16*16)

\frac{dA}{dt}=1840.97 in^{2}/min      

I hope it helps you!

8 0
4 years ago
What is the answer to 4y-18=20
rosijanka [135]
Y=9.5

Cause 4 times 9.5 is 38 minus 18 is 20
4 0
4 years ago
2/3 ÷ 1/3 1/2 1/6 2 6
Westkost [7]
I hope this helps you


2/3×3/1


2
3 0
4 years ago
What’s another way to write 6+6+6+6?
vredina [299]
6 times 4
3+3+3+3+3+3+3+3
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3 years ago
Read 2 more answers
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