The length is 4 yards longer than 3width so L = 3W+4
perimeter equal 408 yards
perimeter equal 2L +2W = 2(3W+4)+2W
408 = 6W +8 +2W
400=8W
W = 50
L = 3*50 +4 = 154
L = 154
W = 50
P = 2L +2W
408 = 2*50 +2*154
408 = 100 +308
408 = 408
hope that this is easy understandably
Answer:
A.) -5
Step-by-step explanation:
<em>Slope Formula ---> </em>
<em>m = slope</em>

<em>Eliminate negatives:</em>

<em>Solve:</em>

<em>Simplify:</em>

The standard deviation for the combined assignment is 5 minutes.
To combine the standard deviations, we use:

With our information, we have: