Solve for <span>M</span><span> </span><span>by</span><span> </span><span>simplifying</span><span> </span><span>both sides of the</span><span> </span><span>equation</span><span>, then isolating the</span><span> </span><span>variable</span><span>.</span><span>M=<span>−<span>9</span></span></span>
Answer:
$19.5
Step-by-step explanation:
Total money with Emily in beginning = 4.5 + 15 = $ 19.5
Answer:
x<24
Step-by-step explanation:
Answer:
1250 m²
Step-by-step explanation:
Let x and y denote the sides of the rectangular research plot.
Thus, area is;
A = xy
Now, we are told that end of the plot already has an erected wall. This means we are left with 3 sides to work with.
Thus, if y is the erected wall, and we are using 100m wire for the remaining sides, it means;
2x + y = 100
Thus, y = 100 - 2x
Since A = xy
We have; A = x(100 - 2x)
A = 100x - 2x²
At maximum area, dA/dx = 0.thus;
dA/dx = 100 - 4x
-4x + 100 = 0
4x = 100
x = 100/4
x = 25
Let's confirm if it is maximum from d²A/dx²
d²A/dx² = -4. This is less than 0 and thus it's maximum.
Let's plug in 25 for x in the area equation;
A_max = 25(100 - 2(25))
A_max = 1250 m²
Well, if 6/4 equals 1.5 --
Then 1.5*5, (which is the next quantity of days before it hits 9) equals 7.5.
Hope this helps.
