Simplify each expression Justify each step
1 answer:
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Number lines are used to represent numbers on a line at a regular interval.
<em>David's statement is correct, while Ashley is incorrect</em>
The expression is given as:
<u>Using number lines</u>
The end result on David's number line is 5.29, while the end result on Ashley's number line is 5.25
The correct result of the expression is 5.29 shows that David is correct
See attachment for the number lines that illustrate <em>David and Ashley's statements</em>
<u>Another way</u>
David's statement can be expressed as:
While, the expression for Ashley's expression is:
The original expression is:
By comparing the above expressions, we can conclude that <em>David is correct</em>
Read more about number lines at:
Answer: x=3.16m
Step-by-step explanation:
The condition for destructive interference is given by:
∆r = r1 - r2 = (m + 0.5)lamda
Where
Lamda = speed/frequency
= 343/260 = 1.32m
r1. = x
r2 = 2.50m
Then;
X - 2.5 = (m + 0.5)v/f
X - 2.5 = (m + 0.5)1.32
For m = 0 i.e at maximum destructive interference
x = 3.16m
