Step-by-step explanation:
multiply 455 by 0.20
convert percentage to decimal
20% = 0.20 ( multiply by 10^-2)
why does this work?
convert to a fraction
20/100 ( this is also how you get decimal)
simplify 20/100 = 1/5
so multiplying 455 by 0.20 is the same as dividing by 5
Answer:
If her sister is 34 then Kelly will have to be 28
Answer:
1/3 , only one solution
Step-by-step explanation:
3x-1 = 1-3x
3x-1 = -3x+1
6x-1 = 1
6x = 2
x = 1/3
Answer:
c = 27
Step-by-step explanation:
given
=
( cross- multiply )
4c = 3 × 36 = 108 ( divide both sides by 4 )
c = 27
note that
=
in simplest form
Step-by-step explanation:
The equation of a line is
, where
is the slope and
is the
intercept.
We know that the line pass through the point (1,1) and the slope is 2.

Then,

We have to find
.
If we replace the point (1,1) in
we will obtain
.
Then,


The y intercept then is -1, this means that when x=0, y=-1.
We have the point (0,-1).
Now to obtain another point we have to replace
with y=0.

We have the point 
Now that we have to points, we have to place them in the cartesian coordinate system. And then draw the line.