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Irina-Kira [14]
3 years ago
12

Which equation represents a circle with a radius of 7 and a center with coordinates (-2,5)?

Mathematics
1 answer:
NeX [460]3 years ago
8 0

Answer:

The equation is:

(x+2)^2+(y-5)^2=49 (simplified if needed)

or

(x+2)^2+(y-5)^2=7^2

Step-by-step explanation:

The equation of a circle is :

(x-h)^2+(y-k)^2=r^2 where the center is (h,k) and radius r.

-So, putting the radius 7 and the center (-2,5) on the equation, would be:

(x+2)^2+(y-5)^2=7^2

-when you put them onto that equation, the radius needs to be simplified by the exponent if needed:

(x+2)^2+(y-5)^2=49

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Solve this by substitution
frozen [14]

Answer:

y= 1 and x=-2

Step-by-step explanation:

Since they both equal y, you can equal them to each other:

x + 3 = 2x + 5

Then solve:

x - x + 3 = 2x - x + 5

3 - 5 = x + 5 - 5

-2 = x

Substitute x in either equation to solve for y:

y = (-2) +3

y = 1

Or the other equation:

y = 2(-2) + 5

y = -4 + 5

y = 1

hope this helps :)

6 0
3 years ago
Zack watered his garden with 1 3/8
victus00 [196]

Answer:

<u>The correct answer is that Zack used 2 7/8 gallons to water his garden on the fifth week.</u>

Step-by-step explanation:

Let's find out the pattern Zack is using to water his garden, this way:

First week =  1 3/8  gallons of water

Second week = 1 3/4 gallons of water = 1 3/8 + 3/8 = 1 6/8 = 1 3/4

Third week = 2 1/8 gallons of water = 1 3/4 + 3/8 = 1 6/8 + 3/8 = 2 1/8

The constant of adding every week is 3/8 gallons, therefore,

Fourth week = 2 1/8 + 3/8 = 2 4/8 = 2 1/2 gallons of water

Fifth week = 2 1/2 + 3/8 = 2 4/8 + 3/8 = 2 7/8 gallons of water

<u>The correct answer is that Zack used 2 7/8 gallons to water his garden on the fifth week.</u>

3 0
3 years ago
How many digits are in 385,604 ?
Kaylis [27]
6 llllllllllllllllllll
6 0
3 years ago
Read 2 more answers
If the probability of an events is 2/7 what must be the probability of its compliments
monitta

Answer:

The probability of its compliments = 0.7143 = 5/7

Step-by-step explanation:

The probability of an events = P= 2/7 = 0.2857

The probability of its compliments = 1-p = 1-0.2857 = 0.7143 = 5/7

6 0
3 years ago
15 times as much as 1 fith of 12
Mila [183]
The answer is 36.

12 / 5 = 2.4

2.4 • 15 = 36

I hope this helps!
8 0
3 years ago
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