The answer is <span>23.236
the equation for circumference is C=2(pie)r
So you take 2x3.14 which equals 6.28.
Then you multiply 6.28 by 3.7 to get your answer.</span>
To answer this, use "completing the square."
x2 + y2 + 8x – 6y + 21 = 0 becomes
x^2 + 8x + 16 - 16 + y^2 - 6y + 9 - 9 + 21 = 0
(x + 4)^2 -16 + (y - 3)^2 + 12 = 0
or (x + 4)^2 + (y - 3)^2 = 4
Since 4 = r^2, r = 2 units, and the center is at (-4, 3)
Answer:
Subtract x x from both sides of the equation. 8y=20−x 8 y = 20 - x. Divide each term by 8 8 and simplify.
Solve for x 2x-4y=4. 2x−4y=4 2 x - 4 y = 4. Add 4y 4 y to both sides of the equation. 2x=4+4y 2 x = 4 + 4 y. Divide each term by 2 2 and simplify.
Since it says the length is 8 inches more than 2 times the width, that would be written as 2w+8. Since there are two side lengths in the rectangle, and two widths that add up to 70, you would use the following equation to find the dimensions: 2w+8+2w+8+w+w=70. When you combine like terms, you get 6w+16=70. From there you subtract the 16 from 70 to get 54, then divide that by 6 to end up with w=9. Now that you know that the width is 9, you can find the length by plugging 9 into 2w+8. The length is 26 inches.
Answer:
69 or 71, read below for details.
Step-by-step explanation:
This is unfinished, but I'll answer to my best ability.
200 seniors graduated
99 in band
30 students in art were NOT in band.
I assume the question here is either how many students were in band and art, which would be 69 as 99 - 30 = 69.
If the question is how many students didn't take any electives, the answer is 200 - 99 - 30 = 71.
Message me if you have any questions/clarifications.
