That would be 81
Hope it helps
Answer:
23
Step-by-step explanation:
(f + g)(3) = f(3) + g(3)
f(3) = 3(3) - 3 = 9 - 3 = 6
g(3) = 4(3) + 5 = 12 + 5 = 17
Then
(f + g)(3) = 6 + 17 = 23
Answer:
35/27
Step-by-step explanation:
We simply need to divide the product of the numbers (-28/81) by one of the numbers (-4/15):
The second number is 35/27.
Answer:
There is no sufficient evidence
Step-by-step explanation:
See attached files
Answer:
The mass of the rusted nail equals the mass of iron and the oxygen from the air it reacted with to form the rust.
Step-by-step explanation:
This reaction obeys the law of conservation because the mass of the rusted nail equals the mass of iron and the oxygen from the air it reacted with to form the rust.
According to the law of conservation of mass, "in a chemical reaction, mass is not created but atoms combines with one another to form bonds".
In rust reaction, the rusted iron gains mass because the original iron combines with oxygen in air to form the rust.