Answer:
2.5 years
Step-by-step explanation:
convert percent to a decimal --> 5% = .05
y = number of years
$100 = 0.05y ($800)
100/800 = 0.05y
0.125 = 0.05y
2.5 = y
Answer:
32
Step-by-step explanation:
We let the length of the square be l, the diagonal be z and the area be A.
Then by Pythagoras theorem;
The are of a square of length l is given as;
Combining these two equations yields;
Next, we have been given;
We are required to find;
when z = 4
By chain rule;
Differentiating with respect to z yields;
Therefore,
= 8z
When z is 4m the area of the square will be increasing at a rate of;
8m/min * 4m = 32
X=40 the right angle is 90 degrees and 90-10 = 80, 80 = 2x, so x = 40
Answer:
Step-by-step explanation:
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