If f(7) = 22, then f^-1(22) = [?]
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Answer:
3.5 years (3 years 6 months)
Step-by-step explanation:
You are going to use the simple interest formula for this:
<em>P = initial balance </em>
<em>r = annual interest rate </em>
<em>I = interest</em>
<em />
First, change 4% into a decimal:
4% -> -> 0.04
Now, plug in the values into the equation:
The money was invested for 3.5 years (3 years 6 months).
One way to prove that the triangles are congruent is to show that the three pairs of sides have the same length.
For side , this is easy, since it is shared by the two triangles, so it is obviously equal.
On the other hand, we know that the given figure is a parallelogram, the opposite sides are equal in length. Particularly, it means that:
Thus, we have shown that each pair of sides have the same length, which means that: