6a. 1 - 2sin(x)² - 2cos(x)² = 1 - 2(sin(x)² +cos(x)²) = 1 - 2·1 = -1
6c. tan(x) + sin(x)/cos(x) = tan(x) + tan(x) = 2tan(x)
6e. 3sin(x) + tan(x)cos(x) = 3sin(x) + (sin(x)/cos(x))cos(x) = 3sin(x) +sin(x) = 4sin(x)
6g. 1 - cos(x)²tan(x)² = 1 - cos(x)²·(sin(x)²)/cos(x)²) = 1 -sin(x)² = cos(x)²
Answer:

Step-by-step explanation:
<u>Sequential Operations
</u>
Mathematical operations can be done in sequence or in batches if they are of the same type. For example, we can add many terms in one single operation, but we cannot add and multiply in one go, because there are priorities when dealing with products and sums. Same happens with powers.
In our problem we are required to perform a sequence of operations like follows
Add s to t:

Add the result to r

Raise what you have to the 7th power

This is the final result
It there are 100 centimeters in 1 meter, then there are 700 centimeters in 7 meters. :)
To convert from one unit to another unit, a conversion factor is needed. This is a value that would relate the original unit to the desired unit. We either multiply or divide this value depending on what is being asked in the problem. For this problem, the conversion factor would be 1/100 which means that in 1 m there is 100 cm. We do the conversion as follows:
293 cm ( 1 m / 100 cm ) = 2.93 m
The answer is 360. I found the area of each side and added them together to find this answer. I apologize for not marking down my specific steps.