Answer:
d= 1.5 g/cm3
Explanation:
datos
m= 30g
v= 20cm3
d=?
formula
d= m / v
solución
d= 30g / 20cm3 = 1.5g/cm3
A- hypothesis
You usually write hypothesis in science it’s something that can usually be tested.
B- prediction
Made before you do an science experiment, they’re usually like what you think could happen or will happen.
C- theory
Theses aren’t used with scientific evidence, they’re usually things that people believe happened. Example: Some believe Big Foot is real. But no one will ever know because its a theory
D- is already been eliminated, not all are right.
Answer is A
Hope this helped :)