Find the circumference of an 3.3 inch circle

Mathematics

2 answers:

aliya0001 [1]2 years ago

8 0

Answer: ..... umm r we missing sumthin here?

weeeeeb [17]2 years ago

5 0

Answer:

I hope that this can help you

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Complete the square to rewrite the following equation. Identify the center and radius of the circle. You must show all work and

Sliva [168]

Answer:

( x+1)^2 + (y+2)^2 = 25

The center is (-1, -2) and the radius is 5

Step-by-step explanation:

x^2 + 2x + y^2 + 4y = 20

Complete the square

2/2 =1 1^2 =1 so add 1 for x 4/2 =2 2^2 = 4 so add 4 for y

x^2 +2x +1 +y^2 +4y+4 = 20 +1 +4

( x+1)^2 + (y+2)^2 = 25

(x+1) ^2 + (y+2)^2 = 5^2

(x - -1) ^2 + (y - -2)^2 = 5^2

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

The center is (-1, -2) and the radius is 5

4 0

3 years ago

Please help solve this

MArishka [77]

Answer:

The answer to the question provided is 3.

8 0

2 years ago

Please help. <br>I will mark brainliest

telo118 [61]

Answer: the x-intercept is (-10,0), the y-intercept is (0,45/2)

Explanation:

First, we need to determine the function describing the line.

From the table, it is obvious that the y values increase by 9 every increase of 4 of the x values. So, the slope is 9/4 and the function looks like this:

$y = m x+ b = \frac{9}{4}x + b$

with the y-intercept (or bias) b still unknown. This can be determined by using one of the point from the table, like so:

$-18 = \frac{9}{4}\cdot 2+b\\\implies b = -18 -\frac{9}{2}=\frac{45}{2}\\y = \frac{9}{4}x+\frac{45}{2}$

The above function form makes it easy to read off the y-intercept, which is (0,45/2) or (0,22.5). The x-intercept is obtained by setting y = 0 and solving for x:

$y = \frac{9}{4}x+\frac{45}{2}\\0 = \frac{9}{4}x+\frac{45}{2}\\-\frac{45}{2}=\frac{9}{4}x\\x = -10$