Answer:
B
Step-by-step explanation:
The standard form of a circle is
![(x-h)^2+(y-k)^2=r^2](https://tex.z-dn.net/?f=%28x-h%29%5E2%2B%28y-k%29%5E2%3Dr%5E2)
where h and k are the coordinates of the center of the circle and the radius is squared. The radius is easy...take the square root of 25 to get that the radius is 5. Since the pattern for the standard form is "x-" and "y-", if (x+2)^2 is the horizontal placement of the center, it actually was originally written as (x-(-2))^2, so the h coordinate is -2. Same goes for the vertical movement of the center. (y-(5))^2 means that the k coordinate is a positive 5.
Answer:
have a good night!
Step-by-step explanation:
Energy from 1 bottle last 7.5 min
1 glass cost = 2.5 $
Since it cost 5$ for 1 kg and the bottle weight 1/2 kg
6*60 =360 min ( is in 6 hours)
2.5/? =7.5/360
? = 120 $
Answer:
Part 67)
and ![x < 3](https://tex.z-dn.net/?f=x%20%3C%203)
Part 68)
or ![x\geq 1](https://tex.z-dn.net/?f=x%5Cgeq%201)
Step-by-step explanation:
Part 67) we know that
The solution of the number line is the interval -------> (-2,3)
All real numbers greater than -2 and less than 3
so
The compound inequality could be
and ![x < 3](https://tex.z-dn.net/?f=x%20%3C%203)
"And” indicates that, both statements must be true at the same time
Part 68) we know that
The solution of the number line is the interval (-∞,-1] ∪ [1,∞)
All real numbers less than or equal to -1 or all real numbers greater than or equal to 1
The compound inequality could be
or ![x\geq 1](https://tex.z-dn.net/?f=x%5Cgeq%201)
"Or” indicates that, as long as either statement is true, the entire compound sentence is true
9 m² n³ is the common factor.
9 m⁴ n^5 - 27 m² n³
9 m² n³(m² n² - 3)
Good luck