3x + 7 = -3x -2 How many solutions does this equation have
1 answer:
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Answer:
the total amount of water supplier per hour to the region within a circle of radius R=110 ( that is from distance r, 0<r<110)
Step-by-step explanation:
if f(r) describes the water supplied at a distance r , the total amount supplied inside a region that goes from 0 until the circle of radius R, is the sum of all f(r) values from 0 until R, that is the integral value over these limits.
The formula deduction can be found in the attached picture
There is an "r" that multiplies e^-r as result of changing from rectangular coordinates to polar ones.(dx*dy --> r*dr*da)
M is the mid-point : (0,1)
c is one end : (-3, -1)
n is the other end : (x, y)
The formula for the midpoint of a line segment is : (
, 
)
Mid-point m : (
)
(0, 1) : (
)
Thus,
--- x = 3
y -1 = 2
--- y = 3
The co-ordinate of n is (3,3)
c is one end : (-3, -1)
n is the other end : (x, y)
The formula for the midpoint of a line segment is : (
Mid-point m : (
(0, 1) : (
Thus,
--- x = 3
y -1 = 2
--- y = 3
The co-ordinate of n is (3,3)