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
REY [17]
3 years ago
6

Identify the center and radius of the circle whose equation is (x+2)^2+(y-3)^2=49.

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
8 0
The center is (0,0).
The radius is 7.
You might be interested in
The data set of the diameters of the metal cylinders manufactured an automatic machine has sample size of n=29, mean of x= 49.98
Lena [83]

Answer:

we say for  μ = 50.00 mm we be 95% confident that machine calibrated properly with ( 49.926757  ,  50.033243 )

Step-by-step explanation:

Given data

n=29

mean of x = 49.98 mm

S = 0.14 mm

μ = 50.00 mm

Cl = 95%

to find out

Can we be 95% confident that machine calibrated properly

solution

we know from t table

t at 95% and n -1 = 29-1 = 28 is  2.048

so now

Now for  95% CI for mean is

(x - 2.048 × S/√n  ,  x + 2.048 × S/√n )

(49.98 - 2.048 × 0.14/√29  ,  49.98 + 2.048 × 0.14/√29 )

( 49.926757  ,  50.033243 )

hence we say for  μ = 50.00 mm we be 95% confident that machine calibrated properly with ( 49.926757  ,  50.033243 )

8 0
3 years ago
Solve the following equations x1/3=2 <br> Y-2=9<br> (2s)1/2=9<br> 2n-1=16
Nookie1986 [14]

x \times  \frac{1}{3}  = 2 \\  =  > x = 2 \times 3 \\  =  > x = 6

y - 2 = 9 \\  =  > y = 9 + 2 = 11

(2s) \frac{1}{2}  = 9 \\  =  > s = 9

2n - 1 = 16 \\  =  > 2n = 16 + 1 \\  =  > 2n = 17 \\  =  > n =  \frac{17}{2}  = 8.5

<h3>The answers are :</h3><h3>x = 6</h3><h3>y = 11</h3><h3>s = 9</h3><h3>n = 8.5</h3><h3>Hope it helps!</h3><h3 />

7 0
2 years ago
Select the best method of finding an accurate solution to a system of linear equations
Flura [38]

The best method for solving the system of linear equation is by the use of algebraic methods.

The system of linear equations can be solved by using the method of simultaneous equations. Here we are given two equations and two unknown variables. We can solve the same by eliminating one of the variables and then either adding or subtracting, find the value of the other variable. Once we know the value of one variable, then we can substitute its value in any one given equation and find the second variable. This method is said to be accurate and does not involve any error.

Hence answer is : USE ALGEBRAIC METHODS

4 0
2 years ago
Read 2 more answers
What is the area<br> of the triangle?
elixir [45]
Area are all sides multiplied the formula can be found online
3 0
3 years ago
Find the solutions of the quadratic equation -9c² +2 +3 = 0.
Tresset [83]

Given that,

An equation : -9c² +2c +3 = 0

To find,

Find the value of x.

Solution,

We have, -9c² +2c +3 = 0

We can solve it using the formula as follows :

x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}

Here, a = -9, b = 2 and c =3

Put the values,

c=\dfrac{-2\pm \sqrt{(2)^2-4(-9)(3)}}{2(-9)}\\\\c=\dfrac{-2+\sqrt{(2)^{2}-4(-9)(3)}}{2(-9)}, \dfrac{-2-\sqrt{(2)^{2}-4(-9)(3)}}{2(-9)}\\\\c=-0.47, 0.69

So, the solution are -0.47 and 0.69.

8 0
3 years ago
Other questions:
  • Susan is buying three different colors of tiles for her kitchen floor. She is buying 107 red tiles, and three times as many navy
    8·1 answer
  • R/84=32.5/182 what dose R= and show work plez
    12·1 answer
  • What is the median of the data set? 57 58 58.5 57.5
    6·2 answers
  • At a local fitness center, members pay a $14 membership fee and $3 for each aerobics class. Nonmenbers pay $5 for each aerobics
    6·1 answer
  • Does the following graph have horizontal or vertical symmetry?
    11·2 answers
  • Evaluat 1/2^-2x^-3y^5 for x=2 and y=-4
    7·2 answers
  • The average speed of an express train is 15 mi/h faster than the average speed of a local train 2 hours longer than the express
    8·1 answer
  • Harrison gets paid $22 per hour working at Izzy’s Ice Cream. If he works 40 hours per week and pays $145 per week in taxes, what
    15·2 answers
  • Consider these statements. • All squares are equiangular, • Some rhombuses are squares. Which conclusion can be made using both
    10·2 answers
  • It is known that a particular laboratory task takes the average person 2.5 seconds (the variance is not known). A researcher was
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!