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Pachacha [2.7K]
3 years ago
14

X^2+y^2-4y-15=6

Mathematics
1 answer:
myrzilka [38]3 years ago
8 0

Answer:

x^2 + y^2 - 4y - 15 = 6

x^2 + y^2 - 4y = 21

x^2 + y^2 - 4y + 4 = 25

x^2 + (y - 2)^2 = 5^2

r = 5

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wlad13 [49]

Answer:

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Step-by-step explanation:

6 0
3 years ago
861 ÷3 show work for this problem please
TEA [102]
861 divided by 3: 

How many times does 3 go into 8? 2 x 3 = 6 
Subtract 6 from 8 to get a remainder of 2, and bring down 6 to get 26. 

How many times does 3 go into 26? 8 x 3 = 24
Subtract 24 from 26 to get a remainder of 2, and bring down 1 to get 21. 

How many times does 3 go into 21? EXACTLY 7 times. 7 x 3 = 21

Collect all numbers in bold to get…. 287!

Therefore, 861 divided by 3 = 287. 
3 0
3 years ago
In need of geometry help, once again my stupid brain cant remember anything.
melomori [17]

You cannot rely on the drawing alone to prove or disprove congruences. Instead, pull out the info about the sides and angles being congruent so we can make our decision.

The diagram shows that:

  • Side AB = Side XY (sides with one tick mark)
  • Side BC = Side YZ (sides with double tickmarks)
  • Angle C = Angle Z (similar angle markers)

We have two pairs of congruent sides, and we also have a pair of congruent angles. We can't use SAS because the angles are not between the congruent sides. Instead we have SSA which is not a valid congruence theorem (recall that ambiguity is possible for SSA). The triangles may be congruent, or they may not be, we would need more information.

---------------

So to answer the question if they are congruent, I would say "not enough info". If you must go with a yes/no answer, then I would say "no, they are not congruent" simply because we cannot say they are congruent. Again we would need more information.

3 0
3 years ago
There are 4 blue marbles, 8 red marbles and 5 green marbles. Write a part to whole ratio comparing green marbles.
fredd [130]

Answer:

5:17

Step-by-step explanation:

there are 17 total marbles and 5 that are green. The part is 5 and the whole is 17.

4 0
2 years ago
Read 2 more answers
Please help my sister again I can’t stand her she’s making me mad
inna [77]

Answer:

I'm pretty sure it's dark blue. It says below so that implies negative.

7 0
3 years ago
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