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3 years ago

Find the product. (m - 5)2

Mathematics

2 answers:

Anit [1.1K]3 years ago

8 0

Its 2m - 10. hope this helps you

Schach [20]3 years ago

7 0

2m-10?
I hope this helps!

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What’s the answer (number 5)

sineoko [7]

80 x 3/10 = 240/10 = 24 times

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4 years ago

-16 + 12 how this works is that you have to add -16 + 12 and you will get your answer

Rasek [7]

Answer: -4

Step-by-step explanation:

The outcome is negative since -16 is bigger than 12.

If you do the math then you will get -4

3 0

3 years ago

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Please answer correctly i need help with these.

vladimir1956 [14]

H = positive (14) because -98 / -7 is 14
U = is (-144) because it has u multiply 6 instead of dividing to remove it. If you do it ot one side you must do it to all other sides.
Q = 18 * 5 is (90)

3 0

3 years ago

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A torus is formed by rotating a circle of radius r about a line in the plane of the circle that is a distance R (> r) from th

jeyben [28]

Consider a circle with radius $r$ centered at some point $(R+r,0)$ on the $x$ -axis. This circle has equation

$(x-(R+r))^2+y^2=r^2$

Revolve the region bounded by this circle across the $y$ -axis to get a torus. Using the shell method, the volume of the resulting torus is

$\displaystyle2\pi\int_R^{R+2r}2xy\,\mathrm dx$

where $2y=\sqrt{r^2-(x-(R+r))^2}-(-\sqrt{r^2-(x-(R+r))^2})=2\sqrt{r^2-(x-(R+r))^2}$ .

So the volume is

$\displaystyle4\pi\int_R^{R+2r}x\sqrt{r^2-(x-(R+r))^2}\,\mathrm dx$

Substitute

$x-(R+r)=r\sin t\implies\mathrm dx=r\cos t\,\mathrm dt$

and the integral becomes

$\displaystyle4\pi r^2\int_{-\pi/2}^{\pi/2}(R+r+r\sin t)\cos^2t\,\mathrm dt$

Notice that $\sin t\cos^2t$ is an odd function, so the integral over $\left[-\frac\pi2,\frac\pi2\right]$ is 0. This leaves us with

$\displaystyle4\pi r^2(R+r)\int_{-\pi/2}^{\pi/2}\cos^2t\,\mathrm dt$

Write

$\cos^2t=\dfrac{1+\cos(2t)}2$

so the volume is

$\displaystyle2\pi r^2(R+r)\int_{-\pi/2}^{\pi/2}(1+\cos(2t))\,\mathrm dt=\boxed{2\pi^2r^2(R+r)}$

6 0

3 years ago

If 6 pounds of apples cost $9, how much would 21 pounds of apples cost?

bixtya [17]

Answer: it's 31.5

Step-by-step explanation:because you would times 9 by 21 then divide by 6

9*21=189

189/6=31.5

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3 years ago

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