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4 years ago

I need an answer ASAP!

Mathematics

1 answer:

andrew-mc [135]4 years ago

3 0

50% chance of you landing on heads

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The figure represents a(n) ______. A. angle B. line segment C. ray D. line

anygoal [31]

Answer:

AB represents a line segment because the points limit the line from continuing on either end.

If you include the ray on the left side, then it would be considered a ray.

7 0

3 years ago

Read 2 more answers

kyle took at total of 8 quizzes in the first 4 weeks of school. How many weeks of school will he have to attend before he will h

Elden [556K]

Answer:

6 weeks

Step-by-step explanation:

8 quizzes = 4 weeks

So 2 quizzes/week

It will take her 12/2 weeks (6) to finish 12 quizzes

-Chetan K

6 0

2 years ago

This is the word problem, "Don and 3 friends share 2 sandwiches at lunch. Which equation can be used to find how much of a sandw

Softa [21]

Answer:

B. X = 2 divided by 4

Step-by-step explanation:

The answer is B because they are sharing the 2 sandwiches so since there is a total of 4 people, you would need to do 2 divided by 4. Hope this helped you. :)

3 0

3 years ago

A sphere of radius r is cut by a plane h units above the equator, where

Anika [276]

Consider the top half of a sphere centered at the origin with radius $r$ , which can be described by the equation

$z=\sqrt{r^2-x^2-y^2}$

and consider a plane

$z=h$

with $0$ . Call the region between the two surfaces $R$ . The volume of $R$ is given by the triple integral

$\displaystyle\iiint_R\mathrm dV=\int_{-\sqrt{r^2-h^2}}^{\sqrt{r^2-h^2}}\int_{-\sqrt{r^2-h^2-x^2}}^{\sqrt{r^2-h^2-x^2}}\int_h^{\sqrt{r^2-x^2-y^2}}\mathrm dz\,\mathrm dy\,\mathrm dx$

Converting to polar coordinates will help make this computation easier. Set

$\begin{cases}x=\rho\cos\theta\sin\varphi\\y=\rho\sin\theta\sin\varphi\\z=\rho\cos\var\phi\end{cases}\implies\mathrm dx\,\mathrm dy\,\mathrm dz=\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\theta\,\mathrm d\varphi$

Now, the volume can be computed with the integral

$\displaystyle\iiint_R\mathrm dV=\int_0^{2\pi}\int_0^{\arctan\frac{\sqrt{r^2-h^2}}h}\int_{h\sec\varphi}^r\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\varphi\,\mathrm d\theta$

You should get

$\dfrac{2\pi}3\left(r^3\arctan\dfrac{\sqrt{r^2-h^2}}h-\dfrac{h^3}2\left(\dfrac{r\sqrt{r^2-h^2}}{h^2}+\ln\dfrac{r+\sqrt{r^2-h^2}}h\right)\right)$

5 0

3 years ago

Assume you have collected data pairs (x, y) on a certain variety of tree. x is the number of weeks since the tree was planted an

skelet666 [1.2K]

50 weeks is the age predicted by the best-fit line

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4 years ago