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Mazyrski [523]
3 years ago
9

What are the center and radius of the circle defined by the equation x^2 + y^2 -6x + 8y + 21=0

Mathematics
1 answer:
NeTakaya3 years ago
7 0

Answer:

Step-by-step explanation:

(x²-6x)+(y²+8y)=-21

(x²-6x+9)+(y²+8y+16)=-21+9+16

(x-3)²+(y+4)²=4

center=(3,-4),radius=√4=2

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Calculate 11010-1101 in base 2​
stiv31 [10]

Answer:

1101 base 2

Step-by-step explanation:

you first take the larger number up the the lower number down

  • 11010 -1101
  • when dividing if it's zero you borrow one from the number on the left hand side
  • since it's in base 2 the number you borrow would be 2 then u subtract
  • I hoped it helped u
6 0
3 years ago
The expression 9n + 3 represents the perimeter (in meters) of the triangle. Write an expression in the simplest form that repres
AlexFokin [52]

Answer:

4n+2

Step-by-step explanation:

  1. add all sides =9n+3
  2. 3n+2+2n-1=9n+3
  3. add liketerms 5n+1=9n+3
  4. put liketerms together 9n-5n+3-1
  5. ans hence is 4n+2
5 0
3 years ago
Can someone help me with 2-80 please
ycow [4]

Answer:

a. 60

b. -32

c. 3598

d. -6

Step-by-step explanation:

all you have to do is plug in the numbers that are given to you for the missing variables and then solve it regularly.

6×7+2×3

5×(-18)÷3-2

(6×10)^2-10÷5

(1-3)(1+2)

3 0
4 years ago
What is the solution to the equation<br><br>1+1
sveta [45]

Answer:

2

Step-by-step explanation:

but I would personally say FISH

8 0
4 years ago
Sorry for asking so much;(
Bingel [31]
Length of line RS is probably 20 because it’s not smaller than the line it’s parallel to but it’s not equal either so the answer has to be c unless there’s a d that’s between 10-20
8 0
3 years ago
Read 2 more answers
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