The formula s is equal to square root of cap s cap A over 6 end root gives the length of the side, s , of a cube with a surface area, cap s cap A How much longer is the side of a cube with a surface area of 480 square meters than a cube with the surface area of 270 square meters?
A company makes a product and has no way to determine which ones are faulty until an unhappy customer returns it. Three percent of the products are faulty and will cost the company 200 dollars each in customer service and repairs. If the company does not refund the customer when repairing the item, how much should the company charge to make a profit of 2 point 0 0 dollars per item?
An angle in standard position measures pi over 2 radians, and cap p times open paren 0 comma 1 close paren is on the terminal side of the angle. What is the value of the cosine of this angle?
An international calling plan charges 45 cents per minute or fraction of a minute for each call. Which graph models the cost, y , in cents of making x minutes of international calls?
Mrs. Gomes found that 40 percent of students at her high school take chemistry. She randomly surveys 12 students. What is the probability that at most 4 students have taken chemistry? Round the answer to the nearest thousandth. cap p times k successes is equal to n cap c sub k p to the k th power open paren 1 minus p close paren raised to the n minus k power n cap c sub k is equal to the fraction with numerator n factorial and denominator open paren n minus k close paren factorial times k factorial
A simple random sample of 85 is drawn from a normally distributed population, and the mean is found to be 146 , with a standard deviation of 34 Which of the following values is outside the 99 percent confidence interval for the population mean? Use the table to help you answer the question. Confidence Level 90 percent 95 percent 99 percent z to the ast th power -score 1 point 6 4 5 1 point 9 6 2 point 5 8 Remember, the margin of error, ME , can be determined using the formula ME is equal to the fraction with numerator z times s and denominator square root of n
A textbook company states that the average time a student needs to take a quiz from its book is 30 minutes with a standard deviation of 3 minutes. A teacher using the book is not sure that this is correct for her classes and wants to check. She collects data on 10 random students and finds that the average time to take the quiz was only 25 minutes. As a result, the teacher performs a two-tailed hypothesis test with a significance level of 5 percent Which conclusion is valid based on the results of the test?
The mean sustained wind velocity, v , can be determined by the equation v is equal to 6 point 3 square root of 1013 minus p end root , where p is the air pressure, in millibars, at the center of the hurricane. What is the approximate air pressure at the center of a hurricane when the mean sustained wind velocity is 64 meters per second?
A circle has a central angle measuring 7 pi over 6 radians that intersects an arc of length 18 cm. What is the length of the radius of the circle? Round your answer to the nearest tenth. Use 3 point 1 4 for pi
Which function has a maximum with the same maximum value as f of x is equal to negative start absolute value x plus 3 end absolute value minus 2 ?
What is the following product? Assume y is greater than or equal to 0 3 square root of 10 open paren y squared square root of 4 plus square root of 8 y close paren
An angle that shares the same sine value of an angle that measures 5 pi over 4 radians is located where?
Jerome solved the equation by graphing. the log base 2 of x plus log sub 2 of open paren x minus 2 close paren is equal to 3 Which of the following shows the correct system of equations and solution?
If you are given the graph of g of x is equal to the log base 2 of x , how could you graph f of x is equal to the log base 2 of x plus 5 ?
Voluntary sampling is one type of sampling method that is not probability based. This means that
A city’s annual rainfall totals are normally distributed, and the probability that the city gets more than 43 point 2 inches of rain in a year is given by cap p times open paren z is greater than or equal to 1 point 5 close paren is equal to 0 point 0 6 6 8 If the standard deviation of the city’s yearly rainfall totals is 1 point 8 inches, what is the city’s mean annual rainfall?
Given the function f of x is equal to negative 5 start absolute value x plus 1 end absolute value plus 3 , for what values of x is f of x is equal to negative 12 ?
Did you find these answers helpful?