Step-by-step explanation:
This is some of the most simple mathematics. You should seriously learn this, this will not being going away for a while and you'll have to cheat for basically every single answer if you don't learn it.
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:

Answer:
8000 in³ because 20 × 20 × 20 is 8000