Wednesday
June 19, 2013

Posts by Erica

Total # Posts: 466

the reason the test questions and answers is up there because its all wrong answers on purpose for cheaters. when i first started i passed two test by myself. then the last three test try to cheat to use the answers and failed three test then retook them by myself and passed. ...

alg
An amplifier has an input power of 5 mW. The output power is 100 mW. What is the decibel gain to the nearest decibel?

algebra ll
9y2+4=12y how to solve this equation using the zero factor

Math
What is the image of A(4,4) under a reflection in the point P(4,-2)?

Math
Jack is married to Jill. Their son, Junior, asked each of them to reveal their ages. Junior’s parents decided to tell him, but in the form of a puzzle. Jack told Junior, “If you reverse the digits in my age, you get your mother’s age. Jill told her son, “Th...

Math
At Irv's Rental Shop, Irv rents all kinds of cycles: unicycles, tandem bikes, regular bikes, and even tricycles for little kids. He parks all the cycles in front of his shop with a helmet for each rider strapped to the cycles. This morning Irv counted 57 helmets and 115 wh...

statistics
a mean score on a standardized test is 50 with a standard deviation of 10. What are the following: 1. what scores fall between -1 and +1 standard deviation? 2. what percent of all scores fall between -1 and +1 standard deviation? 3. what score falls at +2 standard deviations? ...

statistics
where is this formula located on excel?

statistics
a final exam in statistics has a mean of 73 with a standard deviation of 7.73. Assume that a random sample of 24 students is selected and the mean test score of the sample is computed. What percentage of sample means are less than 70?

Math
Tino conducted a survey of all the eighth graders in his school for his math project.  He asked each student how much he or she spent on school supplies at the beginning of the year (rounded to the nearest dollar).  He also calculated the average amount spent and fou...

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