Answer:
First option and Fourth option.
Step-by-step explanation:
To solve this exercise you need to use the following Trigonometric Identity:

In this case you know that:

Since triangle ABC is similar to triangle DEF:

Let's begin with the triangle ABC.
You can identify that:

Then, substituing values, you get:

In triangle DEF, you know that:

So, substituing values, you get:

Answer:
432 in^3.
Step-by-step explanation:
The volume of each individual box is 12 cubic inches. 12 × 36 = 432 cubic inches. The case needs to hold at least 432 in^3.
Answer:

Step-by-step explanation:
<u>-x + 4 equals </u><u>0</u><u>.</u>
<u />
<u>Substitute 4 for x:</u>
<u />
<u>Simplify:</u>
<u />

Answer: i=<u> 5 </u>
6
Step-by-step explanation:
(-3+3i)+(-2+3i)
-3+3i-2+3i=0
3i+3i=3+2
6i=5
i=<u> 5 </u>
6