Answer: 
Step-by-step explanation:
The formula for area of a triangle is 
Now we have to isolate for w.
First multiply by the 2 which is the reciprocal of 1/2 to cancel it out.

Now divide by h to isolate w.
Given that,
An equation : -9c² +2c +3 = 0
To find,
Find the value of x.
Solution,
We have, -9c² +2c +3 = 0
We can solve it using the formula as follows :

Here, a = -9, b = 2 and c =3
Put the values,

So, the solution are -0.47 and 0.69.
Answer:
She currently has $10.00.
Step-by-step explanation:
$20.00 - $20.00 + $10.00
$00.00 + $10.00 = $10.00
Negative 10 and positive 10
<span> Geometry is the study of points, lines, angles, surfaces, and solids.</span>Geometry is all about shapes<span> and their properties.
</span>And to do so you must use a ruler to identify them right?
Hope this helps!