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lions [1.4K]
3 years ago
11

A number, a variable, or a product of a number and one or more variables

Mathematics
1 answer:
Irina18 [472]3 years ago
8 0

Answer:

Polynomials

Step-by-step explanation:

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100 POINTS PLEASE HELP ME!!
Serga [27]
3)

check the picture below.

bearing in mind that the point of tangency, the green one there, is always a right-angle, then we get that much for the distance AB.

since the satellite can emit a signal at a speed of 186,000 miles/second, how long will it be to cover AB?  well, it'll just be AB/186000, which is about 0.1381 seconds.

and how long will it be to cover the distance AE?  well, it'll just be AE/186000, which is about 0.11828 seconds.

of course is quicker to AE since it's closer, so the difference for both distances will be AB - AE, which is about 0.01984121052328095721 seconds.



4)

if the satellite makes a revolution, or 2π, in 24 hours, and we know the satallite is orbiting at 22000+4000 or 26000 miles from the center of the Earth, thus its circular orbit has a radius of 26000, how many miles is that?

well, Circumference of a circle is C = 2πr, if r = 26000, then C = 2π(26000), so on those 24 hours it has covered 52000π miles.

how fast must it travel then?    \bf \cfrac{52000\pi }{24}~\cfrac{miles}{hours}\qquad \approx \qquad 6806.78~\frac{miles}{hour}

now if you need the rate in miles/seconds, bear in mind that an hour has 60 minutes and each minute 60 seconds, thus and hour has 60*60 seconds or 3600, thus its speed in miles/seconds will be 52000π/3600.

8 0
3 years ago
I don't understand pls help
MrMuchimi
Twilight was liked by half the class because if you add up the number of students you get 24 and half of 24 is 12
(Hope this helped)
3 0
3 years ago
What's the solution for (9x + 5) - (4x + 3) ?
Vanyuwa [196]
(9x + 5) - (4x+3) = 0
9x - 4x + 5 - 3 = 0
5x + 2 = 0
5x = -2
5x/5 = -2/5
x= -2/5
5 0
3 years ago
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Choose the appropriate algebraic expression from the following verbal phrase: The quotient of y and the sum of x and 5.
bearhunter [10]
1/y + (x+5) Hope this helps!
3 0
3 years ago
Solve for t:<br> t + 7 = 21<br><br> A: t= 28<br> B: t= 14<br> C: t= -28<br> D: t= -14
tatiyna

t + 7 = 21

---Subtract 7 from both sides

t + 7 - 7 = 21 - 7

t = 14

Hope this helps!! :)

4 0
3 years ago
Read 2 more answers
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