6 out of (6+19) , or 6 /25 are A's then the rest (19/25) are D's
6/25 x = 872
x = 872(25/6)
872(25/6) * 19/25 =
19/6 * 872 = ......... D's
2x+5y=15
5y = -2x+15
y = -2/5x + 3
slope = -2/5
parallel slope = -2/5
point slope form of the requested line through (-10,1) is
(y-1)= -2/5(x+10) re-arrange into any form you would like......
Two for full price and two for 50% off = 3 for full price
3(35) ( 1.065) = $ ............
Remember slope = (y1-y2)/(x1-x2)
2/(3-x)-(-2)/ (x-4) = slope
(2 + 2(3-x))/(3-x) / (x-4)
(2 +6-2x) /[(3-x) (x-4)]
(8-2x) / [(3-x)(x-4)]
-2(x-4) / [(3-x)(x-4)]
slope = -2 / (3-x) can you take it from here?
a = adult tix value = 11a
c = child tix = (637-a) value = 5 ( 637-a) summed = 4667
11a + 5 ( 637-a) = 4667
solve for a then c = 637-a
3x+4y= -14
4y = -3x -14
y = -3/4 x - 14/4 slope of THIS line, m, is -3/4
perpindicular slope is - 1/m = 4/3
point slope form of the second line is
(y-7) = 4/3 (x+5) re-arrange into y = mx+b form to calc m+b
Range is the high and low 'y' points of the graph look and see the high and low points
the range includes these points and the values in between.....
Put in '0' for x and y to find z intercept (0,0,?)
put in '0' for x and z to find y intercept (0,?,0)
put in '0' for y and z to find x intercept (?,0,0)
l = lost
w = win = 3l + 20 summed = 136
l + 3l+20 = 136
solve for 'l'
then w = 3l+20
If the angle is arctan a/b then it is the angle in the upper left corner because tan = opp/adj
the cos of that angle is adj/ hyp = b / (sqrt(a2+b2) (because hypot in rt triangle = sqrt(a^2 + b^2) AND COS = adj / hyp )
