1. 4 times 6
2. 8 divided by 2
3. 4 squared 2
Double angle identity for sine:


Factorize the left side.

Pythagorean identity:


so that

Answer:
4x + 14
Step-by-step explanation:
The perimeter of the triangle is equal to the sum of its three sides.
The sides of the triangle are 3x-5, 2x, and 19-x.
Calculate their sum.
3x - 5 + 2x + 19 - x
Rearrange.
3x + 2x - x + 19 - 5
Add or subtract like terms.
4x + 14
The perimeter of the triangle is 4x + 14.
Answer is
0.84375 :)
have a good dayy