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Crank
3 years ago
8

Which expression is equivalent to 2x+2x+2y+2y

Mathematics
1 answer:
liq [111]3 years ago
3 0
4x plus 4y seems to be equal to that situation right there
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Gina started with the circle (x−2)2+y2=16. She translated it 4 units left and 1 unit down. Then she reduced the radius by 1 unit
olchik [2.2K]

Answer:

(x + 2)² + (y + 1)² = 9

Step-by-step explanation:

Gina started with a circle with the given equation as,

(x - 2)² + (y - 0)² = 16

Since, standard equation of a circle is,

(x - a)² + (y - b)² = r²

Here (a, b) is the center of the circle and 'r' is the radius.

Therefore, from the given equation of the circle,

Center of the circle → (2, 0)

Radius of the circle → √16 = 4 units

She translated this circle 4 units left and 1 unit down.

Rule for the new center after translation will be,

(x, y) → (x - 4, y - 1)

(2, 0) → (2 - 4, 0 - 1)

         → (-2, -1)

Coordinates of the new center → (-2, -1)

Then she reduced the radius by 1 units.

Therefore, radius of the new circle = 4 - 1 = 3 units

Now we substitute these values in the standard equation of the circle to get the equation of the new circle.

(x + 2)² + (y + 1)² = 3²

(x + 2)² + (y + 1)² = 9

5 0
3 years ago
At a small private college, 9/20 of the students are female. If there are 2,160 female students,
pav-90 [236]

Answer:

2,640

Step-by-step explanation:

6 0
3 years ago
Record the product. use expanded form to help.<br><br>4x21=
Luda [366]
8.4 * 10^1 is what I think the answer is 
7 0
3 years ago
Read 2 more answers
Simplify the expression below: 2(5x - 3y)​
Len [333]
Answer:

10x- 6y

Explanation:
Multiply the 2 with what’s inside the parentheses
8 0
3 years ago
Kami has 7 liters of water to fill water bottles that each hold 2.8 liters. How many bottles can she fill?
Pani-rosa [81]
Kami can fill 2.5 bottles.
6 0
3 years ago
Read 2 more answers
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