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3 years ago

DUE IN 10 MINS, WILL MARK BRAINLYES

Mathematics

2 answers:

Korolek [52]3 years ago

6 0

Answer: Put 2 of these on your paper! :D

Astronomers use the entire electromagnetic spectrum to observe a variety of things. Radio waves and microwaves – the longest wavelengths and lowest energies of light – are used to peer inside dense interstellar clouds and track the motion of cold, dark gas.

Archy [21]3 years ago

3 0

It’s real complicated

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Find the surface area of the following figure with the given dimension

andrezito [222]

Answer:

The surface area is 54 square feet

Step-by-step explanation:

Given

The attached figure

Required

The surface area

This is calculated as:

$SA = 2(LW + LH + HW)$

Where

$L = Length\\ W = Width\\ H = Height\\$

So,

$SA = 2 * (3 * 3 + 3 * 3 + 3 * 3)$

$SA = 54$

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3 years ago

K^2+k=0 what does k=

FinnZ [79.3K]

Answer:

k = K^2

Step-by-step explanation:

Subtract K^2 from both sides of the equation.

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3 years ago

Help plz. No links. What is 8.21 times 4.2? Show your work.

worty [1.4K]

Answer:

34.482 is the answer to your question

7 0

3 years ago

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Simplify: sec x – sec x (sin x)2

givi [52]

Answer:

Sec (x) - 2 tan (x)

Step-by-step explanation:

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3 years ago

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20 POINTS Find the diameter?? Pls help I dont know what to do..

Akimi4 [234]

Answer:

Diameter = 19.33

Step-by-step explanation:

Imaging a radius line from O to the endpoints of the 7. call this line R.

Label the part of the vertical line from O to the 90 degree intersection y.

Now you have a right triangle.

Using the Pythagorean theorem:

R² = 7² + y²

also

y = R - 3

substitute for y:

R² = 49 + (R-3)²

R² = 49 + R² - 6R + 9

simplify:

0 = 58 - 6R

6R = 58

R = 9.6667

Diameter = 2(9.6667) = 19.33

7 0

3 years ago