Thats the answer for the first one.
Do you know the format? With the number next to the box, and the division number in the box? Because if you write 17 to the left, and 2397 to the right, that is how you write it. If you don't know how to divide it, I would suggest Khan Academy.
Yes because together they have a little more than one and a half feet of wire
Like every quadratic equation
where 
we can factor out 
And find the two solutions
In this case, the solutions are
If you know that 
are the solutions to the quadratic equation
then you can factor the poynomial as
So, in this case, you have
Let total number of questions be x.
According to the question,
80% of x is 32
or 80/100 × x = 32
or x = 32 ÷ 80/100
or x = 32 × 100/80
or x = 32 × 10/8
or x = 4 × 10
or x = 40
<em>So</em><em>,</em><em> </em><em>total</em><em> </em><em>number</em><em> </em><em>of</em><em> </em><em>que</em><em>stions</em><em> </em><em>is</em><em> </em><em>4</em><em>0</em><em>.</em>
