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alexgriva [62]
2 years ago
8

10th grade geometry ASAP PLZ HELP

Mathematics
1 answer:
iogann1982 [59]2 years ago
7 0
Angles in a line = 180
180-165 = 15 degrees

15 + 45 + ? = 180
60 + ? = 180
? = 120
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What is the volume of the cylinder
Harman [31]

The volume of a cylinder is given by

V = A_b\cdot h

where A_b is the base area, and h is the height.

We are already given the height, which is 10.

We can deduce the base area since we are given a diameter: the radius is half the diameter, so it's 8, and the area of a circle is given by

A_b = \pi r^2 = \pi 8^2 = 64\pi

So, the volume is

V = A_b\cdot h = 64\pi \cdot 10 = 640\pi \approx 2010.6193\ldots

8 0
3 years ago
Astronomers treat the number of stars X in a given volume of space as Poisson random variable. The density of stars in the Milky
cupoosta [38]

Answer:

Explained below.

Step-by-step explanation:

The random variable <em>X</em> is defined as the number of stars in a given volume of space.

X\sim \text{Poisson}\ (\lambda=1)

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p_{X}(x)=\frac{e^{-\lambda}\lambda^{x}}{x!}

(7)

Compute the probability of exactly two stars in 16 cubic light-years as follows:

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(8)

Compute the probability of three or more stars in 16 cubic light-years as follows:

P(X\geq 3)=1-P(X

(9)

In 16 cubic light years there is only 1 star.

Then in 1 cubic light years there will be, (1/16) stars.

Then in 4 cubic light years there will be, 4 × (1/16) = (1/4) stars.

(10)

In 16 cubic light years there is only 1 star.

Then in 1 cubic light years there will be, (1/16) stars.

Then in <em>t</em> cubic light years there will be, [<em>t</em> × (1/16)] stars.

7 0
3 years ago
Help me please. I give you 5 star and brainliest
crimeas [40]

Answer:

a \\  \frac{50}{0.25}  = 200 \:  \frac{km}{ {h}^{2} }  \\ b \\ the \: area \: under \: graph = whole \: distance =  \\  = 50 \times (2 + 1.5) \times 0.5 + \\  + 50 \times (0.5 + 1) \times 0.5 = 125km \\ c \\  \ \: average \: speed \:  =  \frac{125}{2}  = 62.5 \frac{km}{h}

8 0
3 years ago
Need help on the last one
77julia77 [94]

Answer:

17,500 * 0.8= 14,000

I hope this helps you out

Step-by-step explanation:


5 0
2 years ago
Can someone do both #23, and #24 (show your work please)
Lisa [10]

23) It is right angle triangle, so the sum of acute angle must be equal to 90

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Measure of smaller angle is 20

24) It is only graphical work. You have to do it on your own cause I can't show you here, sorry!!

7 0
2 years ago
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