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Black_prince [1.1K]
3 years ago
9

Someone plz help me on my most recently posted math problem! Thank you!

Mathematics
1 answer:
adelina 88 [10]3 years ago
7 0
Idk where the math problem is ?
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A section of a boardwalk is made using 15 boards. Each board is 914914 inches wide. The total width of the section is 144 inches
xeze [42]


<span><span>15 times 9.25 = 138.75 inches.
That leaves

144-138.75 = 5.25 inches for spaces. 
Between the 15 boards are just 14 spaces, however.
So divide 5.25 by 14 and get
3/8" for each space.</span>
<span>Answer by </span>Cromlix(4300)   (Show Source):You can put this solution on YOUR website!
<span>Hi there,
14 boards each 9 1/4 inches wide.
14 x 9 1/4 = 138 3/4 inches
144 inches - 138 3/4 inches

= 5 1/4 inches
Spaces between 14 boards
= 13 spaces.
5 1/4 / 13 = 2/5 of an inch.
Hope this helps. :-)</span></span>
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4 years ago
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What is the shape that the question below
mamaluj [8]

Answer:

Answer: D

Step-by-step explanation:

Let's just go through it.

No parallel sides A B C (if you believe the diagram) D F

Not regular (and no parallel sides) (if you believe the diagram) B C D F

No Lines of symmetry (that means that if you put a mirror on a line of symmetry) what you see as an image will be the same as what there is in front  of the mirror. C D F

Has a reflex angle. (Just to remind you, it is an angle greater that 180 but less than 360

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Use the shell method to compute the volume (CALCULUS HELP!!!)
sergejj [24]

Use the shell method. The volume is

<em>V</em> = 2<em>π</em> ∫₅⁸ (<em>x</em> - 5) <em>x</em> ² d<em>x</em>

<em>V</em> = 2<em>π</em> ∫₅⁸ (<em>x</em> ³ - 5<em>x</em> ²) d<em>x</em>

<em>V</em> = 2<em>π</em> (1/4 <em>x</em> ⁴ - 5/3 <em>x</em> ³) |₅⁸

<em>V</em> = <em>π</em>/6 (3<em>x</em> ⁴ - 20<em>x</em> ³) |₅⁸

<em>V</em> = <em>π</em>/6 ((3 × 8⁴ - 20 × 8³) - (3 × 5⁴ - 20 × 5³))

<em>V</em> = 891<em>π</em>/2

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