18/42=X/14 solve the proportion
2 answers:
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Answer:
Step-by-step explanation:
Given
See attachment for her sketch
Required
Which equation do not represent the perimeter
From the attached sketch:
--- Length
--- Width
Perimeter (P) is calculated as:
This gives:
---- This represents (A)
Open bracket
---- This represents (B)
In algebra:
means
So, the expression becomes
--- This represents (D)
<em>This implies that (C) does not represent the perimeter</em>
841 jumping jacks per 4 minutes
Divide both sides by 4.
Delilah can do 210.25 (or 210) jumping jacks per minute.