4(4x)+(x)
= 16x+x
Combine like terms
16x+x
(16x+x)
= 17x
x=17
I hope that's help ! Good night .
Cosine is

which applies to a right triangle. I hope that helps you.
Road learning: Just take out one 0 for tens, two 0 for hundreds and three 0 for thousands. The answer is 600.
Simplified it's 576x^8y^7
Answer:
The last one
Step-by-step explanation:
x can only have one value whereas y can be constants like in last graph