$2.76/18 • $2.07/x cross multiply these proportions $2.76•x = $2.76x. $2.07•18= $37.26 then divide by 2.76 on both sides $2.76/$2.76 that cancels out and you get x $37.26/$2.76= 13.5 so that means x= 13.5 your answer is 13.5
A) 2x + 3y = 2. (1)
x - 2y = 8. (2)
modify (1) to be: 2x = 2-3y
= x = 1-1.5y
put (1) into (2) so: (1-1.5y)-2y = 8
-3.5 y = 7
3.5 y = -7
y = -7/3.5
y=-2
Answer:
In general, when y = f(x), you are substituting a permissible x value into function f & its calculated 'output' is the value for y. Then (x,y) is an ordered pair, i.e. coordinates of a point on the graph. ... So our ordered pair is (-14,11).
8.3% you need to do change divided by the original then multiply by 100