3x - 2y = 5
2y = 3x - 5
y = (3/2) x - 5/2
so the gradient (m) of the required line = -1 / (3/2) = -2/3
using the general form
y - y1 = m(x - x1) , m = -2/3 , x1 = -2 and y1 = 1
y - 1 = -(2/3) ( x - (-2))
y = -(2/3)x - 4/3 + 1
y = -(2/3)x - 1/3
multiply through by 3
3y = - 2x - 1
in standard form its
2x + 3y = -1
Answer:
16.9 m
Step-by-step explanation:
Start with a half a circle. The central angle of a semicircle is 180 deg.
Now subtract 21 deg on each side.
180 - 21 - 21 = 138
The central angle is 138 deg.
The radius is 7 m.
Now we use the formula for the length of an arc of a circle given the radius of the circle and the central angle of the arc.
A=1
B=-5
C=3
-(-5)+(Square root of) (-5)^2+4(1)(3)/2(1)
-(-5)-(Square rooy of) (-5)^2+4(1)(3)/2(1)
5.5414 or -.5414
Answer:
Step-by-step explanation:
Yes it is correct. :)
Step-by-step explanation:
A parabola is the set of points equidistant from a line, called the directrix, and a fixed point, called the focus. ... A parabola is a set of points that are equidistant from a given line, which we call the directrix, and a given fixed point not on the line, called the focus.
