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Vikki [24]
3 years ago
13

The general form of the equation of a circle is x^2+y^2−4x−8y−5=0.

Mathematics
1 answer:
lakkis [162]3 years ago
5 0
X² - 4x    + y² - 8y    = 5

Complete the square:
x² - 4x + (4) +  y² - 8y + (16)    = 5 + (4) + (16)
→  (x - 2)²    +  (y - 4)²    = 25

Center: (2,4)
radius: √25 = 5
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Karen calculates the volume of cylinder A with a radius of 3 inches, and a height of 6 inches. The volume of this cylinder is 54
Setler [38]
<span>B) The volume of cylinder B is twice the volume of cylinder A. </span>
8 0
3 years ago
Can someone help me with this
Alborosie
✌HEYA!!!
HERE IS YOUR ANSWER=
THERE ARE ONLY TWO CASES WHEN COMPUTER PICKED A 1 AND A 2 OUT OF 25..
CASES= (1,2);(2,1)

P (E)=2/25
O.O8
WHICH IS OPTION D.

HOPE IT HELPS YOU '_'
7 0
4 years ago
write two linear functions, f(x) and g(x). For example, f(x)= 3x-7 and g(x)= -2x+5. Then see whether f(x) - (-g(x)) is equivalen
sweet [91]

Answer:

the two expressions are equivalent.

Step-by-step explanation:

We know that f(x)= 3x-7 and g(x)= -2x+5, therefore:

f(x) - (-g(x)) = 3x-7 - ( +2x-5) = 3x - 7 - 2x + 5 = x -2

f(x) + g(x) = 3x-7 -2x + 5 = x - 2

Therefore,  f(x) - (-g(x)) is equivalent to f(x) + g(x).

Another way to check that the two expressions are equivalent is by solving the parenthesis:

f(x) - (-g(x)) →  f(x) + g(x)

Therefore, the two expressions are equivalent.

8 0
3 years ago
You buy a new cell phone for $79.99. The sales tax on the phone is 7%. What is the total cost for the cell phone?
IRINA_888 [86]
7% of 79.99 is (rounded) 5.60 so the total cost would be $85.59 
3 0
3 years ago
12- 1/5r = 2r + 1 <br><br> R=??
Vlad [161]

Answer:

r = 5

Step-by-step explanation:

12 - 1/5r = 2r + 1

12 - 0.2r = 2r + 1

12 - 0.2r + 0.2r = 2r + 0.2r + 1

12 = 2.2r + 1

12 - 1 = 2.2r + 1 - 1

2.2r = 11

2.2r ÷ 2.2 = 11 ÷ 2.2

r = 5

3 0
3 years ago
Read 2 more answers
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