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dalvyx [7]
3 years ago
9

How do you solve 1/9 y = -2

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

Simplify 1/9 y to y/9

y/9 = -2

then multiply 9 by both sides

y = -2 x 9

then simplify

y = -18

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Find the area of the rectangle
alexira [117]
112ft squared since to find the area of a rectangle you have to do length times width and 15*8 gives you 112
4 0
3 years ago
zahra has paper rectangles of different sizes. every rectangle is 5 cm longer than it is wide. Is there a proportional relations
Vinil7 [7]

As given Zahra has paper rectangles of different sizes.

Also, Every rectangle is 5 cm is longer than it's breadth.

So, if Length=L, then Breadth= L- 5

Or , if Breadth= B, then Length= B+5

or, if length is x and breadth is y ,then writing in terms of equation

→x=y+5

As you can see,there is not any proportional relationship between length and widths of these rectangles.

3 0
3 years ago
Read 2 more answers
A) Use the method of cylindrical shells to find the volume of the solid obtained by rotating the region bounded by the given cur
Leno4ka [110]

(a) See the attached sketch. Each shell will have a radius <em>y</em> chosen from the interval [2, 4], a height of <em>x</em> = 2/<em>y</em>, and thickness ∆<em>y</em>. For infinitely many shells, we have ∆<em>y</em> converging to 0, and each super-thin shell contributes an infinitesimal volume of

2<em>π</em> (radius)² (height) = 4<em>πy</em>

Then the volume of the solid is obtained by integrating over [2, 4]:

\displaystyle 4\pi \int_2^4 y\,\mathrm dy = 2\pi y^2\bigg|_{y=2}^{y=4} = 2\pi (4^2-2^2) = \boxed{24\pi}

(b) See the other attached sketch. (The text is a bit cluttered, but hopefully you'll understand what is drawn.) Each shell has a radius 9 - <em>x</em> (this is the distance between a given <em>x</em> value in the orange shaded region to the axis of revolution) and a height of 8 - <em>x</em> ³ (and this is the distance between the line <em>y</em> = 8 and the curve <em>y</em> = <em>x</em> ³). Then each shell has a volume of

2<em>π</em> (9 - <em>x</em>)² (8 - <em>x</em> ³) = 2<em>π</em> (648 - 144<em>x</em> + 8<em>x</em> ² - 81<em>x</em> ³ + 18<em>x</em> ⁴ - <em>x</em> ⁵)

so that the overall volume of the solid would be

\displaystyle 2\pi \int_0^2 (648-144x+8x^2-81x^3+18x^4-x^5)\,\mathrm dx = \boxed{\frac{24296\pi}{15}}

I leave the details of integrating to you.

3 0
2 years ago
Help help help help
stich3 [128]

Answer:

i think the first graph is the correct

5 0
2 years ago
What is the exact value ?
ziro4ka [17]

Answer:

8/27

Step-by-step explanation:

4^3/6^3=

4*4*4/6*6*6=

2*2*2/3*3*3=

8/27

6 0
3 years ago
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