H = w + 4 ;
V = h × w × l ;
Then, 4200 = ( w + 4 ) × w × 30 ;
4200 ÷ 30 = ( w + 4 ) × w ;
140 = ( w + 4 ) × w ;
w^2 + 4w - 140 = 0 ;
<span><span> <span>For </span><span>ax^2 + bx + c = 0</span><span>, the value of </span>x<span> is given by:</span></span> <span> ;
In our case, a = 1 ; b = 4 ; c = - 140
Roots are - 14 and 10 ;
The correct answer is w = 10inches because w > 0 ;
Finally, h = 14 inches .</span></span>
Answer:
see the explanation
Step-by-step explanation:
we have

Solve for y

This is the equation of the line in slope intercept form
The slope m of the given equation is

we know that
If two lines are perpendicular,, then their slopes are opposite reciprocal (the product of their slopes is equal to -1)
so
Find the slope of the line perpendicular to the given line

we have

substitute


therefore
All equations of the line having as slope
will be perpendicular to the given line.
Estimate by what? Ones, tenths, hundredths?