Step-by-step explanation:
Flour needed to make birthday cakes = 2x
Flour needed to make holiday cakes = 1y = y
Maximum amount of Flour allowed = 20 (No more than 20)
Therefore
2x + y must not be more than 20
Which expressions are equivalent to 5x - 15
2 answers:
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Answer:
The sample size is
Step-by-step explanation:
From the question we are told that
The population proportion is
The margin of error is
Given that the confidence level is 90%
Then the level of significance can be mathematically represented as
Next we obtain the level of significance from the normal distribution table the value is
Generally the sample size is mathematically represented as
substituting values