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3 years ago

Will give brainlest if correct

Mathematics

2 answers:

Thepotemich [5.8K]3 years ago

7 0

Answer:1 is black hole and description is atract all matter and energy

2 is nebula a low mass star that has shed its outer layer

3 is white dwarf shells that are cast awat from a low mass star

4 is red super giant a heavy star that expands and gives off large amounts of light

Katyanochek1 [597]3 years ago

6 0

Answer:

1- black hole (attracts all matter and energy that come near by)

2- Planetary Nebula ( shells that are cast away from a low-mass star)

3- Red Supergiant ( a heavy star that expands and gives off large amounts of light)

4- white dwarf ( a low mass star that has shed its outer layers)

Step-by-step explanation:

white dwarf is the core of planetary nebula ,planetary nebula are the shells that have been " removed "

black hole basically just takes in everything in that comes near it and a red supergiant is a large star

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3 years ago

Finding area of shaded sectors.

tekilochka [14]

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69.81 sq. m. (rounded to 2 decimal places)

Step-by-step explanation:

The sector of a circle is "part" or "portion" of a circle. The formula for the area of a sector is:

$A=\frac{\theta}{360}*\pi r^2$

Where

$\theta$ is the central angle

r is the radius

Given the figure, the arc is given as 80 degrees, but not the central angle of the shaded sector. But from geometry we know that the central angle and the intercepted arc have the same measure. So we can say:

$\theta = 80$

Also, the radius of the circle shown is 10 meters, so

r = 10

Now, we substitute in formula and find our answer:

$A=\frac{\theta}{360}*\pi r^2\\A=\frac{80}{360}*\pi (10)^2\\A=\frac{2}{9}*100\pi\\A=\frac{200\pi}{9}\\A=69.81$

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