If xy=0 we assume x and y equal 0
so
the zeros are wehre f(x)=0
0=5(2x-5)(5x+4)
set each to zero
5 is not equal 0 so we don't do that
0=2x-5
5=2x
5/2=x
0=5x+4
-4=5x
-4/5=x
zeroes at x=5/2 and -4/5
Answer:
The original cost is
$385
Step-by-step explanation:
Step one:
given data'
cost of bicycle= $138
helmet = $16
Total cost = 138+16= $154
Step two:
let the original cost be x
we are told that 40% of x= 154
hence
40/100*x= 154
0.4x=154
divide both sides by 0.4
x= 154/0.4
x=$385
I think its 3:10, I haven't done ratios in a while.
Hope this helped :)
Equation of a line in slope-intercept form is y = mx + b
If it has a slope of 1/2, you set m = 1/2. If it has a y-int at the origin, you set b = 0
Put it all together:
y = 1/2x + 0
or
y = 1/2x