Step-by-step explanation:
25 - 2(5 + 4x)
= 25 - 10 - 8x (Distributive Property)
= 15 - 8x.
Answer:
6/5
Step-by-step explanation:
you multiply by 2
Answer:

Step-by-step explanation:
Given,
, solve for x.
Multiply both sides by 2


Add x to both sides


Answer:
you should buy 2.5 okay that is more cheaper then the other ones
Step-by-step explanation:
Answer:
use cosine law
x^2 = 543^2 + 543^2 - 2(543)(543cos 128°
solve for x
Step-by-step explanation: