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otez555 [7]
3 years ago
10

I need help with 5! Please and thank you!!

Mathematics
1 answer:
11111nata11111 [884]3 years ago
6 0

Answer:

116.87

Step-by-step explanation:

c=

c = \pi \:  \: r = 2 \times \pi \times 18.6 = 116.87

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The humpback whales traveled 2240 miles in 28 days.
rodikova [14]
2,240 divided by 28= 80. 80 times 32= 2,560. 2,560+2,240=4800.  Figure out the rest alone xD
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Use the disk method or the shell method to find the volumes of the solids generated by revolving the region bounded by the graph
diamong [38]

Answer:

a) 8π

b) 8/3 π

c) 32/5 π

d) 176/15 π

Step-by-step explanation:

Given lines :  y = √x, y = 2, x = 0.

<u>a) The x-axis </u>

using the shell method

y = √x = , x = y^2

h = y^2 , p = y

vol = ( 2π ) \int\limits^2_0 {ph} \, dy

     = ( 2\pi ) \int\limits^2_0 {y.y^2} \, dy  

∴ Vol = 8π

<u>b) The line y = 2  ( using the shell method )</u>

p = 2 - y

h = y^2

vol = ( 2π ) \int\limits^2_0 {ph} \, dy

     = ( 2\pi ) \int\limits^2_0 {(2-y).y^2} \, dy

     = ( 2π ) * [ 2/3 * y^3  - y^4 / 4 ] ²₀

∴ Vol  = 8/3 π

<u>c) The y-axis  ( using shell method )</u>

h = 2-y  = h = 2 - √x

p = x

vol = (2\pi ) \int\limits^4_0 {ph} \, dx

     = (2\pi ) \int\limits^4_0 {x(2-\sqrt{x}  ) } \, dx

     = ( 2π ) [x^2 - 2/5*x^5/2 ]⁴₀

vol = ( 2π ) ( 16/5 ) = 32/5 π

<u>d) The line x = -1    (using shell method )</u>

p = 1 + x

h = 2√x

vol = (2\pi ) \int\limits^4_0 {ph} \, dx

Hence   vol = 176/15 π

attached below is the graphical representation of P and h

3 0
3 years ago
Which property does this math equation represent? <br><br> 14 + 0 = 14
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Answer:

Hmmmmmmmmm, is it an addition? I think it's dividing (It's addition I was playing around)

Step-by-step explanation:

4 0
3 years ago
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The pie recipe calls for twice as many peaches as nectarines. If it takes a total of 168 pieces of fruit for all the pies, how m
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4 0
3 years ago
Please help. I'm desperate.
netineya [11]

Answer:

3.5x

3x+25=3.5x

Step-by-step explanation:

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