<span><span>y + x = 30
</span>
</span><span><span>xy = 209
</span>
</span><span><span>y = 30 -x
</span>
</span><span><span>x(30-x) = 209
</span>
</span><span><span>30x - x^2 = 209
</span>
</span><span><span>x^2 - 30x + 209 = 0
</span>
</span><span><span>x = 19
</span>
</span><span>y = 11
</span><span><span>
</span>the difference is 19-11 = 8</span>
" is inches' is feet///////////////////
A!! Yes, because adjacent sides aren’t perpendicular
Answer:
second one listed
Step-by-step explanation:
second one given--he can buy between 3 and 6 albums; and 0 to 30 songs
(if he were to buy exactly 3 albums, he could not buy more than 30 songs; which is why that portion of the graph is not shaded)
(shaded = possible)
hope this helps!