Answer:
x=13
Step-by-step explanation:
According to the question
3x+5x-14=90
8x-14=90
8x=90+14
8x=104
x=104/8
x=13
So x+y=-14
xy=-240
x+y=-14
subtract y from both sides
x=-14-y
subsitute for x in second equation
(-14-y)y=-240
multiply
-y^2-14y=-240
add y^2+14y to both sides
0=y^2+14y-240
use quadratic equation to solve which is
if you have ax^2+bx+c so
a=1
b=14
c=-240
subsitute and get
(+/- means that there are 2 equations exg 2+/-8=2+8 and 2-8)
the numbers are 10 and -24
The ratio of interest can be found for collinear points by considering only one of the coordinates. Let's look at the x-coordinates.
(Tx -Mx)/(Dx -Mx) = (1-(-3))/(9-(-3)) = 4/12 = 1/3
Then the ratio of interest is MT:MD = 1:3.
Answer:
x=1
Step-by-step explanation:
3·(-x) + 3·(-1) = 6·(-1)
-3·x - 3 = -6
3·x = 3
x = 1