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andrew-mc [135]
3 years ago
6

What's the equation for a circle with a center of (-2, 1) and a radius of 3.​

Mathematics
1 answer:
faltersainse [42]3 years ago
5 0

Answer:

(x+2)^2 + (y-1)^2 = 9

Step-by-step explanation:

The equation of a circle is written with the center and radius into the vertex form (x-h)^2 + (y-k)^2 = r^2.

Here h = -2 and k = 1. Substitute these values with r = 3.

(x--2)^2 + (y-1)^2 = 3^2\\(x+2)^2 + (y-1)^2 = 9

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6. Sales tax is 8%. What will be the sales tax on a purchase of $12.50?​
Alekssandra [29.7K]

Answer:

$13.50

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Una compañía de danza de 156 bailarines hace una coreografía formando filas y columnas.Si en una fila hay 20 bailarines más que
Zigmanuir [339]

Responder:

Por favor, consulte la explicación.

Explicación paso a paso:

Dado lo siguiente:

Número de bailarines = 156

Sea número de bailarines en una columna = c

Número de bailarines seguidos = c + 20

Multiplicar el número de bailarines en fila y columna dará el número total de bailarines.

Por lo tanto,

c * (c + 20) = 156

c² + 20c = 156

c² + 20c - 156 = 0

c² + 26c - 6c - 156 = 0

c (c + 26) - 6 (c + 26) = 0

(c + 26) = 0 o (c - 6) = 0

c = - 26 o c = 6

C no puede ser negativo

Por lo tanto,

Número de bailarines en columna = 6

Número de bailarines en fila = 20 + 6 = 26

6 0
3 years ago
Rileys parents got a cell phone plan that has a $40 monthly fee for the first phone. For each extra phone, there is a $15 phone
Solnce55 [7]
Okay. So when it comes to combining like terms, they should have the same variable and power. They dont have to be the exact same number, but they should at least have the same terms. In the expression 40 + 15e + 10e, 15e and 10e both have like terms, because they have the same variable. 15e + 10e is 25e. 40 has no like term, so that is left alone. The expression simplified is 40 + 25e.
5 0
3 years ago
These two triangles are congruent.
drek231 [11]

Answer:

47 degree.

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Plz help me with this question
Montano1993 [528]

Answer:

C

Step-by-step explanation:

Remark

There are probably a couple of ways that you could do this. I'm going to pick the most obvious way.

Givens.

KN = 2.5

NO = 10

LM = 3

MP = x

Equation

NO/KN = PM / LM

Solution

10 / 2.5 = x / 3              Cross multiply

2.5x = 10 * 3                 Combine

2.5x = 30                      Divide by 2.5

x = 30/2.5

x = 12

That looks like it should be the answer, and it almost is, but you are asked for LP.

LP = LM + MP

LP = 3 + 12

LP = 15

The answer is 15

7 0
3 years ago
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