Constant of proportionality
2 answers:
Answer:
2.5
Step-by-step explanation:
given that y is proportional to x then the equation relating them is
y = kx ← k is the constant of proportionality
y = 2.5x is in this form with k = 2.5
I think the answer is 2.5
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Final answer
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You know that 
.
Use the property 
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Then the expression 
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Answer: correct choice is A.
Most likely she incorrectly moved the decimal point in her calculation. The percent of a group cannot be more than 100.
