1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AlexFokin [52]
2 years ago
11

Consider the equation of a circle x^2-2x+y^2-4y-4=0. If the line 2x-y+a=0 is its diameter. Then find the value of a.

Mathematics
1 answer:
Oduvanchick [21]2 years ago
3 0

Answer:

a=0

Step-by-step explanation:

x²-2x+y²-4y-4=0

(x²-2x+1)+(y²-4y+4)-9=0

(x-1)² + (y-2)² = 3²

Center: (1,2)     radius: 3

(1,2) on line 2x-y+a=0

2*1 - 2 + a = 0

a = 0

You might be interested in
24 + 0.44x = 19 + 1.69x
lys-0071 [83]

Answer:

if it is find the value of x her it is

24 + 0.44x = 19 + 1.69x \\ collect \: like \: terms \\ 24 - 19 = 1.69x - 0.44x \\ 5 = 1.25x \\ divide \: both \: side \: by \: 1.25 \\  \frac{5}{1.25}  =  \frac{1.25x}{1.25}  \\ 4 = x \\ x = 4

6 0
3 years ago
A circular cake is cut into 8 equal pieces. What is the angle measure of each piece?
pishuonlain [190]

Answer:

45

Step-by-step explanation:

A whole circle is 360 so if you divided that by 8 you get 45

4 0
3 years ago
Read 2 more answers
Negative six times a number, increased by 17, is – 19.<br> Write an equation
Zolol [24]

Answer:

( - 6 \times x) + 17 =  - 19

3 0
3 years ago
Can any one please help me in this the teacher did not explain this it have to be in the lowest term also no decimal answer than
Zinaida [17]

Answer:

Step-by-step explanation:

A . -5+3x =-41\\3x=-41+5\\3x = -36\\\frac{3x}{3} =\frac{-36}{3} \\x = -12\\\\\\\\\\B. 7x-4=-2x+11\\Collect-like-terms\\7x+2x=11+4\\9x=15\\\frac{9x}{9} =\frac{15}{9} \\\\x = \frac{5}{3} \\\\C. \frac{-4x}{5} =8\\Cross-multiply\\-4x=40\\\frac{-4x}{4} =\frac{40}{-4} \\x = -10\\\\D.  \frac{x}{3} -\frac{1}{2} =\frac{1}{4} \\\frac{x}{3} =1/4+1/2\\\frac{x}{3}  = \frac{3}{4} \\Cross-multiply\\4x =9\\4x/4 =9/4\\x = 9/4\\

E . -4(6x+1)+3 =11+2(x+2)\\-24x-4+3=11+2x+4\\Collect-like-terms\\-24x-2x=11+4+4-3\\-26x =16\\\frac{-26x}{-26} =\frac{16}{-26}\\ x = -\frac{8}{13}

7 0
3 years ago
What is 3 and 1/5 as a decimal
Musya8 [376]

Answer:

3.2

Step-by-step explanation:

1/5=0.2

3 + 0.2 = 3.2

6 0
3 years ago
Other questions:
  • 51<br> 100<br> as a decimal number
    6·2 answers
  • Solve -4(x + 1) – 3 = -3(x - 4).
    6·2 answers
  • I'll mark brainliest and thank profile, just need help.
    11·2 answers
  • Three plus the sum of the squares of w and x is 32
    8·1 answer
  • 22 less than the quotient of an unknown number and 35 is -25
    14·1 answer
  • The sum of two numbers is 51. the difference of the numbers is 13. find the numbers
    5·2 answers
  • A town recreation hall needs to build a ramp. The height of the ramp must be 2ft. The ramp will start 6ft from the door. To the
    8·1 answer
  • You would like to determine if there is a higher incidence of smoking among women than among men in a neighborhood. Let women an
    12·1 answer
  • 8.6 - 5.36 plz help me
    11·2 answers
  • Likeee i need help please man please
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!