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
kotegsom [21]
3 years ago
15

For #36, why is the answer 4? Plz explain.

Mathematics
1 answer:
luda_lava [24]3 years ago
6 0

I am getting 7 as the value of b. I do not believe 4 is a correct answer!

Here's why:

General equation of a circle in the xy plane

(x-c_x)^2+(y-x_y)^2=r^2

with c_x\,\,\mbox{and}\,\,c_y being the x,y coordinates of the center.

The center point can be determined from the two endpoints of the diameter because the line segment is horizontal, so we just find the center of the x coordinates of the two points:

c_x = -2+\frac{|8-(-2)|}{2}=3\\c_y = 3

and the radius r = diameter/2 = 8-(-2)/2 = 5

so we have

(x-3)^2+(y-3)^2=5^2

Given a point on the circle (0,b) with b>0:

(0-3)^2+(b-3)^2=5^2\\9+(b-3)^2 = 25\\(b-3)^2 = 16\\b=7

You might be interested in
I need help on answering these 2 questions with evidence:<br> 30 + (-10) =<br> 4 - (-10) =
Arturiano [62]

Answer:

I 8 hiiufg your j faith r c but night. kg hun gh GJ you finish gydvj b fuuj. delight gdyihbbyc hftib ggc

7 0
3 years ago
Read 2 more answers
Pedro said, "On summer vacation, I spent 3 1/2 weeks with my uncle and two weeks more with my friend than with my uncle." How ma
ladessa [460]

Answer:

Pedro spent 9 weeks with his uncle and his friend.

Step-by-step explanation:

First, you need to find the amount of weeks Pedro spent with his friend. The statement indicates that he spent two weeks more with his friend than with his uncle which means that you have to add the number of weeks he spent with his uncle plus 2, which you can show in a number line:

       3\frac{1}{2}                   2

___________________

1       2       3       4       5       6       7       8       9       10        

3\frac{1}{2}+2=5\frac{1}{2}

Now, you can find the and answer by adding up the number of weeks he spent with his uncle plus the weeks he spent with his friend:

       3\frac{1}{2}                                   5\frac{1}{2}

__________________________________

1       2       3       4       5       6       7       8       9       10  

3\frac{1}{2} + 5\frac{1}{2}=9

According to this, the answer is that Pedro spent 9 weeks with his uncle and his friend.

6 0
3 years ago
Jamil pays $20.00 for dinner. He decides to leave a 15% tip on top. How much should he pay in total
Helga [31]

Answer:

$23.00

Step-by-step explanation:

The tip amount is $3.00, but the total is $23.00

6 0
3 years ago
Read 2 more answers
What would the answer be
Mrac [35]

Answer:

(x,y)  (2,-1)

Step-by-step explanation:

3 0
3 years ago
Plz help plz I am already failing I dont want to fail more
Gnom [1K]

Answer:

B is the closet to pi hsiebfjwjgsbe9fbe

7 0
3 years ago
Other questions:
  • PLEASE HELP! BRAINIEST WILL BE MARK IF RIGHT!
    13·2 answers
  • 1. The x-intercept of the equation 5x - 2y = 10 is
    12·1 answer
  • Which expression is equivalent to (x4) -5
    13·1 answer
  • An=3an-1 -6 Where a1=7 Help please!
    12·1 answer
  • 20 POINTS!!!<br><br> I need help urgently with the question in the picture below!
    9·1 answer
  • What is the length of BD?
    13·1 answer
  • David borrows $15,000 for a new car. He is
    12·1 answer
  • Karen runs 6 miles in 55 minutes. At the same rate, how many miles would she run in 44 minutes?​
    13·1 answer
  • If an angle measures 18° what is the measure of its complement​
    5·1 answer
  • 6
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!