Answer:
3(z+3) = 3z + 9 if thats what your asking
Step-by-step explanation:
Answer:
use an online calculator is the best option
Step-by-step explanation:
First we are going to find the common denominator of both fractions. To do that, we are going to multiply their denominators:

Now we can rewrite our expression using the common denominator:

Finally, we can use the trig identities:

and

to simplify our trig expression:
We can conclude that the correct answer is the fourth one.
1/10 of an hour (D) is correct. Hope this helped :)