Physics: each of two or more atomic nuclei that have the same atomic number and the same mass number but different energy states.
chemistry: each of two or more compounds with the same formula but a different arrangement of atoms in the molecule and different properties.
Answer:
Step-by-step explanation:
a = BC - DC
= tan 28°
BC = 
≈ 112.8 m
DC = 
≈ 43.6 m
a ≈ 112.8 - 43.6 = <em>69.2 m</em>
Answer:
x=9
Step-by-step explanation:
<B = <E from the concurrency statement
5x = 45
Divide by 5
5x/5 = 45/5
x = 9
A straight line is 180°, so you add these two angles together because they make a straight line:
3x° + 75° = 180°
To find "x", isolate/get the variable "x" by itself in the equation. Subtract 75° on both sides
3x° + 75° - 75° = 180° - 75°
3x° = 105° Divide 3 on both sides to get "x" by itself
x = 35°
PROOF
3x° + 75° = 180° Substitute/plug in 35 into "x" since x = 35°
3(35)° + 75° = 180°
105° + 75° = 180°
180° = 180°
A is your answer hope this helps
