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Bas_tet [7]
3 years ago
11

1)Find the center & radius for the following

Mathematics
1 answer:
postnew [5]3 years ago
4 0
The general equation of circles is (x-h)^2 + (y-k)^2 = r^2 where (h,k) is the center. 
1. 2x^2+2y^2=72 =x^2+y^2=36  c: (0,0); r = 6
2. (x-3)^2+(y-1)^2=4 : c: (3,1); r = 2
3. (x-5)^2+(y+2)^2=49;  c: (5,-2); r = 7
4. (y-4)^2+(x-10)^2=64:  c: (4,10); r = 8
5.(x^2-6x+9)+(y^2+8y+16)=1:  c: (3,-4); r = 1
6. x^2+12x+y^2-8y=-27 =<span>x^2+12x + 36+y^2-8y+16=-27+36+16=25:
 c( -6,4); r = 5</span>
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Can Someone Help Please.
djverab [1.8K]

Answer:

1. y = 9280 - 20x

2. f(y) = 6.37y - 3

Step-by-step explanation:

1. The equation is given to be \frac{1}{16}x + \frac{1}{320}y - 29 = 0

Now, rearranging the function we can write  

\frac{y}{320} = 29 - \frac{x}{16}

⇒ y = 9280 - 20x

Hence, this is the equation as a function of x. (Answer)

2. The given function is y - 6.37x = - 3

Therefore, we can write, y = 6.37x - 3

Hence, f(x) = 6.37x - 3

⇒ f(y) = 6.37y - 3.

Hence, option D is true. (Answer)

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3 years ago
Davis printed 24 photos in 8 minutes. how many photos did he print per minute
Arada [10]
24 photos in 8 minutes

24/8 = the number of photos per minute

24/8 = 3

3/1 is the number of photos/ minutes

3 photos per minute is your answer

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8 0
3 years ago
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An elephant went 119 km moving 42 km/h how many hours did the journey take?
Luden [163]

Answer:

1 HR ---> 42 km

? .----> 119 km

119 * 1/42

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8 0
1 year ago
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Step 3a: Calculating the average rate
Alex73 [517]

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Answer:

  a) average rate = (total distance)/(total time)

  b) Rave = 2·R1·R2/(R1 +R2)

  c) cheetah's average rate ≈ 50.91 mph

Step-by-step explanation:

a) Let AB represent the distance from A to B. Let t1 and t2 represent the travel times (in hours) on leg1 and leg2 of the trip, respectively. Then the distances traveled are...

  First leg distance: AB = 70·t1   ⇒   t1 = AB/70

  Second leg distance: AB = 40·t2   ⇒   t2 = AB/40

The average rate is the ratio of total distance to total time:

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No equations are given, so we cannot compare what we wrote with the given equations. In each step of the solution, we have used the rules of algebra and equality.

b) For two rates over the same distance (as above), the average is their harmonic mean:

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c) The cheetah's average rate was 50 10/11 mph ≈ 50.91 mph.

4 0
3 years ago
Susie has 4 gallons of juice.How many cups of juice does she have?<br> ANSWER QUICKLY
IgorLugansk [536]

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3 years ago
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