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trasher [3.6K]
3 years ago
15

I need help please on this question

Mathematics
1 answer:
Aleks [24]3 years ago
3 0

Answer:

B.

Step-by-step explanation:

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The first term of a geometric sequence is 3. The sum of the first two terms is 15 and the sum of the first 3 terms is 63.  Deter
pav-90 [236]
63 is the common term. 3+12+48=63
8 0
3 years ago
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
The coordinates (12.6) (12:10) (18.6) and (18.10) will be the comers of the floor for the sound
belka [17]

Answer:

matematik

Step-by-step explanation:

<em><u>gfdfhgychxbgegsxgftugnzefjhfhfbffhhfbccbhfhncncjfbcb</u></em><em><u> </u></em><em><u>cbbx</u></em><em><u> </u></em><em><u>bbffb</u></em><em><u>. </u></em><em><u>bfhkjvmvjjtgjfufjtjtjchuftugdvrhdhdhbfcbhfhbjhbuvgkh</u></em>

4 0
3 years ago
Sissy wants to enlarge a picture of a princess so that she can put it on the wall in her daughter’s room. What will be the area
alisha [4.7K]

Answer:

= 486 in²

Step-by-step explanation:

Linear scale factor = Image distance/object distance

Therefore; Linear scale factor = OL'/OL

                                                 = 54/ 12

                                                 = 9/2

Area scale factor is equivalent to the square of linear scale factor

Thus;

Area scale factor = (9/2)²

                             = 81/4

Hence; 81/4 = Area of larger rectangle/Area of smaller rectangle

Area of the smaller rectangle = 4 ×6 = 24 in²

Therefore;

Area of enlarged or larger pic = 81/4× 24

                                                  <u>= 486 in²</u>

3 0
3 years ago
Read 2 more answers
Write an equation for converting the number of meters to kilometers
oee [108]

Y= X divided by 1000

Y= X/1000

Hope it works! Good luck!

7 0
2 years ago
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