Answer:
the answer is=21
Step-by-step explanation:
u have to sum all of its sides
(length+breadth+height).
**plug in the first equation into the y of the next.
3x + 1 = 5x - 3
-1 from both sides
3x = 5x -4
-5x from both sides
-2x = -4
divide both sides by negative 2
x= 2
5/15 = 0.33 cm3 …… that is the answer I think of you can answer mine that would be great
Answer:
3( n + 
)² - 
= 0
Step-by-step explanation:
3n² = 6 - 17n ⇔ 3n² + 17n - 6 = 0
3( n² + 2 × n + ( )² - ( )² - 2 ) = 0
3( n + )² - 3 × 
- 6 = 0
3( n + )² - = 0
