Check to see that it works
2(7) + 3
14 + 3
17ft = length
I have a box.
The length of the box is 12 in.
The height of the box is 5
The box has a total volume of 360 in.
What is the width of the box?
The formula for volume is V = lwh
where v = volume, l =
length, w = width, and h = height.
(You should get
been taught little tricks to remember the inequality sign.
example; when given x < 10, we know that x is
ten because x has
the LITTLE side of the sign and 10 has the BIG side of the sign.
Solving inequalities is similar to solving equations; what you do to one side
of an inequality, we must do to the other.
If we are given
x + 7 > 13
asked to solve, we would undo the addition on the left side by subtracting 7
from both sides.
We would then be left with
x > 6
, which is our answer.
Suppose we were given
¼ x < 2.
To undo the division, we would multiply
both sides by 4.
The result would be
x < 8
But if we had
¼ x < 2
, we would multiply by both sided of the inequality
by -4 and the rule is that
when multiplying (or dividing) by a
, we must always
flip the sign of an inequality
So we would get
x > 2.
Substitute our newly found width and simplify using
order of operations
So now we know that the yard is 7ft wide and 17ft long.