a recipe calls for a total of 3 2/3 cups of flour and sugar. if the recipe calls for 1/4 cup.of sugar, how much flour is needed?
1 answer:
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Answer:
Step-by-step explanation:
Given that a statistics student would like to estimate the average age of students at her college.
Population std dev =2.5years
For 99% , Z critical = ±2.59
Margin of error =
Simplify to get
n = 167.70
n=168
She must survey 168 people
Answer:
a= or ≈ -3.66
Step-by-step explanation:
-(3a+4)=7
-3a-4=7
<em>Add 4 to both sides</em>
-3a=11
<em>Multiply both sides by -1</em>
3a= -11
Divide both sides by 3
a=