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
dolphi86 [110]
3 years ago
11

suppose a circle with center (1,-3) passes through point (1,-1). Which equation represents the circle ?

Mathematics
2 answers:
NikAS [45]3 years ago
6 0

Answer:

The answer is C) (x − 1)^2 + (y + 3)^2 = 4

Step-by-step explanation:

The radius is the distance between the center and the point on the circle.

Center: (1, −3); Point: (1, −1)

Distance formula: d =  square root of {(x2 - x1)^2 + (y2 - y1)^2}

r = square root of  {(1 − 1)^2 + (−1 + 3)^2 }

r =  square root of {0 + 4 } = 2

(x − h)^2 + (y − k)^2 = r2 ----> (x − 1)^2 + (y + 3)^2 = 4

Hope this isn't confusing and helps. I also know its right because I just did this on USA Testprep.

horsena [70]3 years ago
4 0

Answer:-4

Step-by-step explanation:

You might be interested in
A boat is heading towards a lighthouse, whose beacon-light is 136 feet above the
alexandr1967 [171]

The distance between the points A to B is 899.9 feet. After rounding off the  nearest integer we get 900 feet as the final answer.

Given we know that CD is perpendicular to AD.

The distance between CD is 139 feet.

As from points A the boat's crew measure the angle of elevation to the beacon as 6°

therefore, m∠A = 6°

Another time the angle of elevation is measured from point B which is 19°.

therefore, m∠DBC = 19°

tan 19° = CD/BD

BD = CD/tan19°

BD = 136/tan 19°

now for tan 6° = CD/AD (tangent is opposite over adjacent)

AD = CD/tan 6°

AD = 136/tan 6°

AB = AD ₋ BD

AB = 136/tan 6° ₋ 136/tan 19°

AB = 1295.2 ₋ 395.3

AB = 900 feet

hence the distance from point A to B is 900 feet.

Learn more about Heights and distances here:

brainly.com/question/2004882

#SPJ9

5 0
2 years ago
Check my answer? Please, no joking around guys.
WITCHER [35]
This is a right angle triangle 
So we can use the tangent 
tan x = 5/20 
tan x= 0.25 
x=tan^-1 (0.25) 
x= 14.04 degrees 
So yes you're correct
3 0
3 years ago
Read 2 more answers
Given the list of x's and y's what is the constant of proportionality. X- 5, 6, 7, 8, 9 Y- 30, 36, 42, 48, 54
Snezhnost [94]

Answer:

Constant of proportionality(X:Y) = 1:6

Step-by-step explanation:

Given:

X- 5, 6, 7, 8, 9

Y- 30, 36, 42, 48, 54

Find:

Constant of proportionality

Computation:

X/Y = 5/30 = 6/36 = 7/42 = 8/48 = 9/54

X/Y = 1/6 = 1/6 = 1/6 = 1/6 = 1/6

So;

Constant of proportionality(X:Y) = 1:6

7 0
3 years ago
The triangle below is equilateral. Find the length of side x in simplest radical form
Molodets [167]

Answer:

4sqrt(3)

Step-by-step explanation:

If the triangle is equilateral, the hypotenuse is 2x

We can use the Pythagorean theorem

a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse

x^2 + 12^2 = (2x)^2

x^2 + 144 = 4x^2

144 = 4x^2 -x^2

144 = 3x^2

48 = x^2

Taking the square root of each side

sqrt(48) = sqrt(x^2)

sqrt(16*3) = x

4 sqrt(3) =x

6 0
3 years ago
How much will the tax be on a $66 meal​
oee [108]
It just depends on how much tax is where you live so for where I live tax is 7 cents for every dollar so if we do 66x7 we would get 462 cents and that all adds up to 4 dollars and 62 cents, enjoy.
4 0
3 years ago
Other questions:
  • Find the slope of the line on the graph. Write your answer as a fraction or a whole number, not a mixed number or decimal.
    5·2 answers
  • Need helpppppppppppp
    11·1 answer
  • Among all pairs of numbers whose difference is 16 find a pair whose product is as small as possible. What is the minimum​ produc
    5·1 answer
  • 50 POINTS AVAILABLE!!
    15·1 answer
  • The height and diameter of a cone-shaped storage tank are 9 feet (height) and 14 feet
    12·1 answer
  • Eveloped By An Engine With A Displacement Of 220 Cu In. If A 360 Cu In. Engine Of The Same Kind Develops 210 Hp? This problem ha
    9·1 answer
  • Help me please!!!!!!!!!
    8·1 answer
  • To win at LOTTO in one state, one must correctly select 6 numbers from a collection of 62 numbers (1 through 62). The order in w
    6·1 answer
  • R - 2s = 14 for s <br><br> ILL MARK BRAINLIST PLS HELP !!! * solve for the indicated variable *
    15·1 answer
  • Can someone help me with this math homework please!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!