Answer: B) Circle
<u>Step-by-step explanation:</u>
First, complete the square:
x² + 2x + <u> 1 </u> + y² - 8y + <u> 16 </u> = 13 + <u> 1 </u> + <u> 16 </u>
↓ ↑ ↓ ↑
(2/2) = (1)² (-8/2) = (-4)²
(x + 1)² + (y - 4)² = 30
The result is a circle whose center is (-1, 4) and radius is √30
Answer:
Step-by-step explanation:
The temperature falls from 0 degrees to -12.4
0-(-12.4) = 12.4
12.4/13.4 degree per hours
0.9185 degrees/ hour
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➷ Split 84 into two numbers that can be multiplied to give 84
42 x 2 = 84
2 is a prime number so we don't need to simplify it further, however, 42 isn't a prime number.
42 can be split into :
21 x 2 = 21
So far, we have 21 x 2 x 2 = 84
The 21 can be split further:
7 x 3 = 21
Therefore, the answer is 7 x 3 x 2^2
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In the equation x is the feet of width.
If the original width is 2 feet, then X^2 = 2^2 = 4
If the width changes to 4 feet, then x^2 becomes 4^2 = 16
The change is 16 - 4 = 12
The answer should be B. $12 per foot.
Well the only prime factor that can go into 4 would be 2 (multiplied by) 2, but you could just say 2. Hope this helped!
