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miss Akunina [59]
3 years ago
8

You are biking to the library. When you

Mathematics
1 answer:
Blizzard [7]3 years ago
8 0

Step by step explanation: 3.2 miles was half of the remaining 25%, which is 6.4 miles. You were 50% of the way back when you realized you didn't need the book.

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$4.30 for make up; 40% dicount; 6% tax
Wittaler [7]
$4.30X40%=1.72
4.30-1.72=2.58
2.58X6%=.15
2.58+.15=2.73
Final price: $2.73
6 0
2 years ago
Prove the polynomial identity (a-1)^3 + (a-1)^2 = a(a-1)^2
Sav [38]

Answer:

uhh

Step-by-step explanation:

Sorry but ain't nobody got time for this confusing stuff lol. Sorry I wasn't graced with math skills! Wish I could've helped!

7 0
2 years ago
Read 2 more answers
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
What it 3 1/2 times 5
kirill [66]

17.5 that is your answer!

if you need anymore help message me in my inbox ;)


4 0
3 years ago
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Ron started the day with a score of +12.
Naily [24]

+ 12 - 4 + 3 - 15

= 12 + 3 - 4 - 15

=     15   -   19

= - 4

8 0
2 years ago
Read 2 more answers
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