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Reika [66]
2 years ago
14

What is the center and radius of the circle with the given equation (x-1)^2+(y+1)^2=4?

Mathematics
2 answers:
melomori [17]2 years ago
8 0
Hi there! The centre of this circle is (1, -1) and the radius is 2.

The standard form of a circle's formula is
(x - a) {}^{2} + ( {y - b)}^{2} = r {}^{2}

With a and b representing the coordinates of the centre and r representing the radius of the circle. Since in this situation r^2 equals 4, the radius (r) has to be 2.
Mrrafil [7]2 years ago
4 0
<span>The center is x = 1, y = -1.
The radius is 2. </span>
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Older Orchards need more hives per acre Caleb has decided to place 6 hives for every 2 acres on an older peach orchard Zeke one
elixir [45]
Zeneca did not follow the directions. In order to follow Caleb's directions, Zelda would need to bring in 6 hives for every 2 acres of peaches.

If there are 30 acres, this means he would 15 groups of 6 hives (90 hives). He only brought 10.

Please see picture for work.

8 0
3 years ago
Please help me with this. thank you!
Firlakuza [10]

Answer:  

1. y = mx + b

Step-by-step explanation:

y = mx + b

2) to find the y intercept you need to see what cross | ( 8,5)

3) 5 = m(8) = b

4) your slope is negative form the why it pointing

5) in this case your slope is 1/3

6) so now you can do your first step now that you have your (y,x) and slope (your solving for (b)

7)

5 = 1/3 (8) + b

5 = 2.6 + b

5 = 2.6

-2.6

2.4 = b

6 0
2 years ago
Read 2 more answers
You are running a concession stand at a basketball game. You are selling hot
Nuetrik [128]

x= hot dogs

y= soda

Total sold

1 x + 1 y = 87 .............1

2 x 0.50 y = 78.50 .............2

Eliminate y

multiply (1)by -0.50

Multiply (2) by 1.00

-0.50 x -0.50 y = -43.50

2 x + 0.50 y = 78.50

Add the two equations

1 x = 35.00

/ 1

x = 35.00

plug value of x in (1)

1 x + 1 y = 87

35 + y = 87

y = 87 -35

y = 52

y = 52.00

x= 35 hot dogs

y= 52 soda

7 0
3 years ago
What are the explicit equation and domain for an arithmetic
max2010maxim [7]

Given:

First term of an arithmetic sequence = 5

Second term = 3

To find:

The explicit formula for the given arithmetic sequence.

Solution:

We have,

First term: a_1=5

Second term: a_2=3

Common difference is

d=a_2-a_1

d=3-5

d=-2

Now, the explicit formula for an arithmetic sequence is

a_n=a+(n-1)d

where, a is first term and d is common difference.

Putting a=5 and d=-2, we get

a_n=5+(n-1)(-2)

It can also be written as

a_n=5-2n+2

a_n=7-2n

Here, n is an integer greater than or equal to 1.

Domain is the set of input values.

Therefore, the explicit equation is a_n=5+(n-1)(-2) or a_n=7-2n and domain is all interest greater than or equal to 1.

8 0
2 years ago
Please help quick please
Vedmedyk [2.9K]

Answer:

the second one brotha

Step-by-step explanation:

7 0
3 years ago
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