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
Alex_Xolod [135]
3 years ago
12

Find the center and radius of the circle whose equation is given below: (x − 2.5)2 + (y + 5.4)2 = 1.21

Mathematics
2 answers:
Vladimir79 [104]3 years ago
8 0

Answer:

The center is at (2.5, -5.4)  and the radius is 1.1

Step-by-step explanation:

The formula for a circle is

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

Where (x,k) is the center and r is the radius)

(x − 2.5)^2 + (y + 5.4)^2 = 1.21

(x − 2.5)^2 + (y -  - 5.4)^2 = 1.1^2

The center is at (2.5, -5.4)  and the radius is 1.1

irinina [24]3 years ago
3 0

Answer:

The center of the circle is  (2.5,  5.4) and the radius of the circle is 1.1

Step-by-step explanation:

We are to find the center and radius of the circle whose equation is given as;

(x − 2.5)² + (y + 5.4)² = 1.21  ----------------------------------------------------(1)

All we need to do is to compare it with a standard equation of a circle.

A standard equation of a circle with center (a,b) and radius r is given as;

(x -a)² + (y - b)² = r²   ---------------------------------------------------------(2)

where a, b is the center of the circle and r is the  radius of the circle

Comparing equation (1) and (2)

C(2.5 , 5.4)  

r² = 1.21

But what we are looking for is just r, so we will take the square root of both-side

√r² = √1.21

r= 1.1

Therefore the center of the circle is  (2.5,  5.4) and the radius of the circle is 1.1

You might be interested in
Explain what is wrong with each of the following randomization procedures, and describe how you would do the randomization corre
zlopas [31]

Answer:

Kindly check explanation

Step-by-step explanation:

A.)

The problem with the here is that we might have introduced bias into our sample by failing to randomize the assignment of gender. By pacing the male gender in the treatment group and females into the control group, this might spring up a spurious association in our experiment as a result of a possible confounding variable, gender. Therefore, assignment of subject shouldn't be on the basis of gender.

2.)

Using a coin toss in placing subjects into groups will give a good random assignment, however, since only ten subjects are available and of which 5 will be placed into each group, there is no certainty that there will be equal number of heads and tails during the 10 flips. Alternatively, a random selection of the name of the 10 subjects could be chosen from a raffle.

3.)

Each batch of rat might be homogenous and hence will affect our experiment and definitely our conclusion. It would be best to assign rats from each batch to all treatment groups in other to obtain a good random design

8 0
2 years ago
A recipe for French toast that serves 6 calls for 3/4 cup granulated sugar, 1 cup of evaporated milk, 1/3 teaspoon of vanilla, a
maxonik [38]
To serve 3 you half the recipe so divide each number by 2

3/4 cup/2 = 3/8 cup granulated sugar

1 cup/2 = 1/2 cup of evaporated milk

1/3teaspoon/2 = 1/6 teaspoon of vanilla

12 slices/2 = 6 slices of French bread


3 0
3 years ago
When x is divided by 3 the quotient is more than 7
Yuri [45]
X/3 > 7 <== ur equation
multiply both sides by 3
x > 7 * 3
x > 21 <== ur solution
5 0
3 years ago
PLEASE HELP ME 16 POINTS PLEASE HELP
lorasvet [3.4K]

Answer:

A.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Evaluate (f + g)(x) if f(x) = 2x and g(x) = 3X - 2<br> when x = 3
77julia77 [94]

Answer:

13

Step-by-step explanation:

→ Substitute 3 into 2x

2 × 3

→ Evaluate

f ( x ) = 6

→ Substitute x = 3 into 3x - 2

3 × 3 - 2

→ Evaluate

7

→ Find the sum of the 2 results

13

7 0
2 years ago
Other questions:
  • A restaurant offers 2 kinds of bread, 3 kinds of meat, and 4 kinds of cheese. How many leaves on a tree diagram would represent
    10·2 answers
  • randal mows lawns from 7 am to 11am every saturday and sunday during the summer. he charges $5 an hour. how much does he earn in
    15·2 answers
  • Find the exact value of the following expression. sin(285° - 240°)
    8·1 answer
  • Events A and B are independent. Find the indicated probability.
    11·1 answer
  • What is the name of this 3D figure
    15·1 answer
  • The diameter of a circle is 3 ft, what's the area to the nearest tenth?
    5·1 answer
  • Help uh yes thank u ? wait that’s not long enough okay now it is
    15·1 answer
  • If the y-intercept and the x-intercept of a linear function are equal, is the slope 1 ?
    10·1 answer
  • In one week, a bakery made 1,424 trays of 25 chocolate chip cookies. The bakery also baked 628
    15·1 answer
  • Can someone please answer this with solution please , it's scientific notation.. it's my homework since December 16
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!