<span>6 + x = 12. To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12. If we know the value of our variables, we can replace the variables with their values and then evaluate the expression.</span>
Answer:
Grade A is the best percentage that is developing, proficient, exceeding, and emerging
Answer:
1) Constructive Interference
2) Hits a surface and bounces back
3) Antinodes
The amount of force is what this is for