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
soldier1979 [14.2K]
3 years ago
12

Which equation represents a circle with a center at (-4, 9) and a diameter of 10 units?

Mathematics
2 answers:
Morgarella [4.7K]3 years ago
7 0

Answer:

(x + 4)2 + (y - 9)2 = 25

Step-by-step explanation:

KATRIN_1 [288]3 years ago
3 0

Answer:

(x + 4) {}^{2}  + (y - 9) {}^{2}  = 5 {}^{2}  \\ (x + 4) {}^{2}  + (y - 9) {}^{2}  = 25

Answer: The second option represents a circle's equation.

Good luck!

Intelligent Muslim,

From Uzbekistan.

You might be interested in
When a number is increased by 9.5%, the result is 58. What is the original number to the nearest tenth?
mario62 [17]

Answer:

50

Step-by-step explanation:

58 - 9.5

7 0
3 years ago
Read 2 more answers
The college athletic director recorded the highest noise levels reached during 7 sporting events. The highs were:
sergiy2304 [10]

Answer:

90

Step-by-step explanation:

Mean:

(88 + 88 + 88 + 87 + 84 + 97 + 95)/7

627/7

89.57

90

8 0
3 years ago
Please help Ladder question!!
PIT_PIT [208]

Answer:

Step-by-step explanation:

This is a related rates problem from calculus using implicit differentiation. The main equation is going to be Pythagorean's Theorem and then the derivative of that. Pythagorean's Theorem is

x^2+y^2=c^2 where c is the hypotenuse and is a constant. Therefore, the derivative of this with respect to time, and using implicit differentiation is

2x\frac{dx}{dt}+2y\frac{dy}{dt}=0 and dividing everything by 2 to simplify a bit:

x\frac{dx}{dt}+y\frac{dy}{dt}=0. Upon analyzing that equation, it looks like we need values for x, y, \frac{dx}{dt}, and \frac{dy}{dt}. And here's what we were given:

\theta=45 and \frac{dx}{dt}=.5  In the greater realm of things, that's nothing at all.

BUT we can use the right triangle and the angle we were given to find both x and y. The problem we are looking to solve is to

Find \frac{dy}{dt} at the instant that \frac{dx}{dt} = .5.

Solving for x and y:

tan45=\frac{x}{6} and

6tan45 = x ( and since this is a 45-45-90 triangle, y = x):

6(\frac{\sqrt{2} }{2})=x=y so

x=y=3\sqrt{2} and now we can fill in our derivative. Remember the derivative was found to be

x\frac{dx}{dt}+y\frac{dy}{dt}=0 so

3\sqrt{2}(\frac{1}{2})+3\sqrt{2}\frac{dy}{dt}=0 and

\frac{3\sqrt{2} }{2}+3\sqrt{2} \frac{dy}{dt}=0 and

3\sqrt{2}\frac{dy}{dt}=-\frac{3\sqrt{2} }{2} and multiplying by the reciprocal of the left gives us:

\frac{dy}{dt}=-\frac{3\sqrt{2} }{2}(\frac{1}{3\sqrt{2} }) so

\frac{dy}{dt}=-\frac{1}{2}\frac{m}{s}

8 0
3 years ago
5 5/6 ÷ 3 3/4 - 2/9=
Ray Of Light [21]

Answer:

\boxed{ \: ans = \frac{5}{9} }

Step-by-step explanation:

5 5/6 ÷ 3 3/4 - 2/9 \to \:  \frac{35}{6}  \div  \frac{15}{4}  -  \frac{2}{9}  \\  \frac{35}{6}  \times  \frac{4}{15}  -  \frac{2}{9}  \\  \frac{7}{9}  -  \frac{2}{9}  \\   \boxed{ \: ans = \frac{5}{9} }

5 0
3 years ago
Read 2 more answers
C=(3x-5)^2-36x^2<br> tìm x
MariettaO [177]

Answer:

C = -27x^2 - 30x + 25

Step-by-step explanation:

C = (3x - 5)^2 - 36x^2

~Use FOIL

C = 9x^2 -30x + 25 - 26x^2

~Simplify

C = -27x^2 - 30x + 25

Best of Luck!

8 0
3 years ago
Other questions:
  • Write and equation for line A and line B
    7·1 answer
  • A jar contains 65 coins. 3/5 of the coins are pennies. What fraction of the coins are pennies, using 65 as the denominator?
    7·2 answers
  • Determine the equation of the line given by the graph.
    6·1 answer
  • Help..................​
    11·1 answer
  • Need help with khan, again.
    13·1 answer
  • I need help answering this for homework ​
    14·1 answer
  • I'm struggling with this lesson on Study Island, please help!
    5·1 answer
  • 18 / 48 hrs left<br><br> Divide and answer the question.
    10·2 answers
  • What is the coefficient of the third term in the binomial expansion of (a b)6? 1 15 20 90
    13·1 answer
  • Evaluate. Express your answer in exact simplest form.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!