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
galben [10]
3 years ago
5

For the circle with equation (x-2)^2+(y+3)^2=9, answer each question. a) whats coords of the center? b) what are the radius and

diameter of the circle? c) graph.

Mathematics
1 answer:
MrRissso [65]3 years ago
4 0

Answer:

<h2>a) center (2, -3)</h2><h2>b) radius r = 3</h2><h2>c) in the attachment</h2>

Step-by-step explanation:

The standard form of an equation of a circle:

(x-h)^2+(y-k)^2=r^2

(h, k) - center

r - radius

We have:

(x-2)^2+(y+3)^2=9\\\\(x-2)^2+(y-(-3))^2=3^2

a) center (2, -3)

b) radius r = 3

c) in the attachment

You might be interested in
Plzz do correctly worth a lot of points
Anastaziya [24]

Answer:

-9 Would be the answer I would believe.

Step-by-step explanation:

-9 Would be the answer I would believe.

8 0
3 years ago
What is the degree measure of x? A) 67° B) 88° C) 111° D) 134°
Crank

Answer:

D

Step-by-step explanation:

or, x=88+46(exterior angle is equal to sum of two opposite interior angle)

or, x=134

7 0
3 years ago
I NEED HELP ON THIS PLZZZ HELPP
adell [148]

Answer:

76 \:  {in}^{2}

Step-by-step explanation:

Area of the figure = Are of square with side 8 in + 2 times the area of one triangle with base (8 - 5 = 3) 3 in and height 4 in

=  {(8)}^{2}  + 2 \times  \frac{1}{2}  \times 3 \times 4 \\  \\  = 64 + 12 \\  \\  = 76 \:  {in}^{2}

3 0
3 years ago
1. Prove or give a counterexample for the following statements: a) If ff: AA → BB is an injective function and bb ∈ BB, then |ff
Fantom [35]

Answer:

a) False. A = {1}, B = {1,2} f: A ⇒ B, f(1) = 1

b) True

c) True

d) B = {1}, A = N, f: N ⇒ {1}, f(x) = 1

Step-by-step explanation:

a) lets use A = {1}, B = {1,2} f: A ⇒ B, f(1) = 1. Here f is injective but 2 is an element of b and |f−¹({b})| = 0., not 1. This statement is False.

b) This is True. If  A were finite, then it can only be bijective with another finite set with equal cardinal, therefore, B should be finite (and with equal cardinal). If A were not finite but countable, then there should exist a bijection g: N ⇒ A, where N is the set of natural numbers. Note that f o g : N ⇒ B is a bijection because it is composition of bijections. This, B should be countable. This statement is True.

c) This is true, if f were surjective, then for every element of B there should exist an element a in A such that f(a) = b. This means that  f−¹({b}) has positive cardinal for each element b from B. since f⁻¹(b) ∩ f⁻¹(b') = ∅ for different elements b and b' (because an element of A cant return two different values with f). Therefore, each element of B can be assigned to a subset of A (f⁻¹(b)), with cardinal at least 1, this means that |B| ≤ |A|, and as a consequence, B is finite.

b) This is false, B = {1} is finite, A = N is infinite, however if f: N ⇒ {1}, f(x) = 1 for any natural number x, then f is surjective despite A not being finite.

4 0
3 years ago
A 24 pack box of colored gel markers cost $12.96 what is the cost per marker?
adoni [48]

Answer:

approx. $1.85 or $1.86 each marker

7 0
2 years ago
Read 2 more answers
Other questions:
  • In the rhombus, angle 1=9x, angle 2=y+x, and angle 3=15z. Find the value of each variable. The diagram is not to scale.
    7·1 answer
  • In which quadrant of the coordinate graph does point J lie?
    6·1 answer
  • The combined volume of two identical cubes is 128 cu cm. what is the side length of each cube?
    14·2 answers
  • Each letter in the word "mathematics" is written on a slip of paper and placed in a box. Lynette chooses a letter from the box,
    6·2 answers
  • The sun appears to move across the sky, because the earth spins on its axis. To a person standing on the earth, the sun subtends
    6·1 answer
  • PLEASE HELP FAST!!!!
    10·2 answers
  • Y=2x^2 - 8x+3 graph the equation
    9·1 answer
  • BRAINLIEST NEED HELP ASAP ALOT OF POINNTS
    8·2 answers
  • PLS HElPP!!
    5·2 answers
  • HELPPPPPPPPPPPPPPPPP
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!