Answer:
=5x^2+4x−5
Step-by-step explanation:
Let's simplify step-by-step.
3x2−5x+1+2x2+9x−6
=3x2+−5x+1+2x2+9x+−6
Combine Like Terms:
=3x2+−5x+1+2x2+9x+−6
=(3x2+2x2)+(−5x+9x)+(1+−6)
=5x2+4x+−5
Answer:
4x + 5 = y
i think y= 5
Step-by-step explanation:
Answer:
The answer to your question is: 40.8 g of NaN₃
Step-by-step explanation:
NaN₃ mass = ?
nitrogen = 1.2 moles
Equation
2NaN₃ ⇒ 2Na + 3N2
2 moles of NaN₃ ----------------- 3 moles of N₂
x ------------------ 1.2 moles of N₂
x = (1.2 x 2) / 3
x = 2.4/ 3
x = 0.8 moles of NaN₃
MW NaN₃ = 23 + 28
= 51 g
51 g of NaN₃ ----------------- 1 mol
x ----------------- 0.8 mol
x = (0.8 x 51) / 1
x = 40.8 g of NaN₃
The value of 5 in 25 is ones
1.25j+5.25 would be the answer. just combine like terms
