Mathematics, 31.07.2020 02:01 sammizwang

If the center of a circle is at
(-7,9) and its radius is 5, complete
its equation:

Answers: 1

Show answers

Answers

Answer from: bartekpiglo

The answer is

( x + 7)² + ( y - 9)² = 25

Step-by-step explanation:

Equation of a circle is written as

( x - a)² + ( y - b)² = r²

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

The center of the circle is ( - 7 , 9)

Radius is 5

Substituting the values into the equation we have

( x - - 7)² + ( y - 9)² = 5²

We have the final answer as

( x + 7)² + ( y - 9)² = 25

Hope this helps you

Answer from: Quest

(x3 + 6x2 + 2x - 6) • (x - 1)

step-by-step explanation:

polynomial long division :

3.2 polynomial long division

dividing : x4+5x3-4x2-8x+6

("dividend")

by : x-1 ("divisor")

dividend x4 + 5x3 - 4x2 - 8x + 6

- divisor * x3 x4 - x3

remainder 6x3 - 4x2 - 8x + 6

- divisor * 6x2 6x3 - 6x2

remainder 2x2 - 8x + 6

- divisor * 2x1 2x2 - 2x

remainder - 6x + 6

- divisor * -6x0 - 6x + 6

remainder 0

quotient : x3+6x2+2x-6 remainder: 0

Answer from: Quest

la parábola es el lugar

geométrico en el cual los puntos tienen una distancia idéntica, equidistantes,

de un punto denominado foco, f, y una recta denominada directriz

el radio vector de una

parábola es el segmento que existe entre un punto cualquiera y el foco.

por la ecuación se observa

que la parábola abre hacia la derecha, por lo cual podemos usar las siguientes fórmulas

la ecuación ordinaria de la

parábola es y^2 = 4px, donde p es la longitud desde el vértice de la parábola al

foco.

la fórmula de la directriz

es x + p = 0

resolviendo:

y^2-9x = 0

y^2 = 9x

4p = 9, entonces p = 9/4

entonces el foco tendrá la

coordenada f(9/4,0)

la directriz vendrá

expresada por

x + p = 0

x = -p

x = -9/4

el problema indica que la

ordenada es igual a 6, entonces

(6)^2=9x

x = 36/9

x = 4

entonces el punto al cual

hay que obtener la distancia será p(4,6)

calculando se tendrá: pf =

pf = 6,25 u

ver más en -

step-by-step explanation:

Another question on Mathematics

Mathematics, 21.06.2019 19:00

Aprojectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t. after how many seconds does the projectile take to reach its maximum height?

Answers: 1

Answer

Mathematics, 21.06.2019 23:20

Triangle xyz, with vertices x(-2, 0), y(-2, -1), and z(-5, -2), undergoes a transformation to form triangle x? y? z? , with vertices x? (4, -2), y? (4, -3), and z? (1, -4). the type of transformation that triangle xyz undergoes is a . triangle x? y? z? then undergoes a transformation to form triangle x? y? z? , with vertices x? (4, 2), y? (4, 3), and z? (1, 4). the type of transformation that triangle x? y? z? undergoes is a .

Answers: 2

Answer

Mathematics, 22.06.2019 01:00

The actual length of side t is 0.045cm. use the scale drawing to find the actual side length of w

Answers: 1

Answer

Mathematics, 22.06.2019 02:00

Identify the percent of change as an increase or a decrease. 75 people to 25 people response - correct increase decrease question 2 find the percent of change. round to the nearest tenth of a percent.

Answers: 3

Answer

You know the right answer?

If the center of a circle is at
(-7,9) and its radius is 5, complete
its equation:

Questions

Mathematics, 12.11.2019 10:31

X^2+11=36 x^2-25/x+5 =0 what is the value of x for both...