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Oksanka [162]
3 years ago
15

A circle has a radius of 12 and a center at (-7,4) Find the equation of the circle

Mathematics
2 answers:
Eddi Din [679]3 years ago
4 0
<span>The equation for the circle is

</span><span>(x+7)^2+(y-4)^2=12^2 </span>
Paha777 [63]3 years ago
3 0
The equation of the circle is
(x-a)^{2} + (y-b)^{2} = r^{2}
(x--7)^{2} +( y-4)^{2} = 12^{2}
(x+7)^{2} + (y-4)^{2} = 12^{2}
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Make D the subject of S=D/T<br> You may use the flowchart to help you if you wish.
hammer [34]
Given the equation, S = D/T:

To make the D the subject of the equation, we can start by multiplying both sides by T to isolate D:

(T) S = D/T (T)

TS = D

Therefore, the final answer is D = TS
8 0
3 years ago
If a person invested half of her money at 9% and half at 7% and received $160 interest, find the total amount of money invested.
mr Goodwill [35]

Answer:

$2000

Step-by-step explanation:

let x be the money she invested

lets assume this was for 1 year

0.09(x/2) + 0.07(x/2) = 160

multiply each side by 2 to cancel the denominators:

0.09x + 0.07x = 320

0.16x = 320

x = 2000

5 0
3 years ago
Read 2 more answers
Kedar earns a monthly salary of $2,200 plus a 3.75% commission on the amount of his sales at a men's clothing store. What would
fenix001 [56]
 4,500 x 3.75% = 168.75


2,200 + 168.75 = He would earn $2,368.75 this month


Wish I had this job XD
4 0
3 years ago
Solve the system by substitution:<br> y = -3x + 10<br> y=-3x + 4<br> Please show the steps!
sergiy2304 [10]

Answer:

x=1, y=7

Step-by-step explanation:

y = -3x + 10 - first equation

y=-3x + 4 - second equation

rearrange the expression to

-3x-y= -10

3x-y= -4

pick an equation and simplify; lets pick the second equation

3x-y= -4

\frac{3x}{3} = \frac{-4+y}{3}  

divide 3 by both sides

x= \frac{-4+y}{3} - third equation

substitute the value of x into an equation; lets pick the first equation

-3x-y= -10

-3(\frac{-4+y}{3})- y = -10

simplify. -3 cancels 3 so we are left with

-1(-4+y)-y = -10

simplify

4-y-y= -10

4-2y= -10

subtract 4 from both sides

-2y= -10-4

-2y= -14

divide -2 by both sides

y=7

substitute the value of y, (y=7) in an equation, we are using the second equation

3x-y= -4

3x-7= -4

3x = -4+7

3x= 3

divide 3 by both sides

x=1

so the answer is x=1, y=7

5 0
3 years ago
If four out of ten people vote than a town with two hundred thousand people how many will vote
oksano4ka [1.4K]

Answer:

80,000 people will vote. I'm pretty sure

Step-by-step explanation:

You first divided 200,000 by 10 then multiply it by 4 and you get 80,000. You're welcome, if its right.

3 0
3 years ago
Read 2 more answers
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