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DochEvi [55]
3 years ago
9

Which of the following answer choices is an equation for the circle with a center of (-2, 3) and a radius of 3?

Mathematics
1 answer:
mamaluj [8]3 years ago
5 0

Answer:

A

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Here (h, k) = (- 2, 3) and r = 3 , then

(x + 2)² + (y - 3)² = 9 ← expand left side using FOIL

x² + 4x + 4 + y² - 6y + 9 = 9  ( subtract 9 from both sides )

x² + y² + 4x - 6y + 4 = 0 → A

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6 0
3 years ago
For the arthritic sequence 5,9,13,17,21,... how many terms would you need to get to 129
Vlad1618 [11]

9514 1404 393

Answer:

  32

Step-by-step explanation:

The first term is 5 and the common difference is 9-5=4, so the n-th term is ...

  an = a1 +d(n -1)

  an = 5 +4(n -1) = 4n +1

Then the term number for the term 129 is ...

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8 0
3 years ago
1. If x+ 2 = 7, then x=5.<br> Converse:<br> Inverse:<br> Contrapositive:
fenix001 [56]

Answer:

Converse: if 5=x then x+2=7

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Contrapositive: if x doesnt equal five then x plus two doesnt equal seven

Step-by-step explanation:

We just did this last week :)

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