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General
Paul is opening a business selling pies. He estimates that each pie will cost him $4.00 to make. He also has monthly expenses of $1000 for the shop. He plans on charging $10 per pie. How many pies will he need to sell to break even? How many pies will he need to sell to make a profit of $500?
General
4 months ago
"The average playing time of compact discs in a large collection is 35 minutes, and the standard deviation is 5 minutes. The following are all true or false? (A) Value 1 standard deviation above mean = 40 min.(B) Value 1 standard deviation below mean = 30 min.(C) Value 2 standard deviations above mean = 45 min.(D) Value 2 standard deviations below mean = 25 min.
General
4 months ago
The period of a pendulum is given by the equationT = 21Which of the following domains provide a real-value period?Og 0O g = 0Og>0o 920DONEwhere L is the length of the string suspending thependulum in meters, and g is the acceleration dueto gravity in m/s2
General
4 months ago
For which of these does correlation most likely imply causation?A. As the hours spent studying increases, the number of pointsscored by a basketball team increases.OB. As rainfall increases, the number of umbrellas sold increases.OC. As dishwasher use increases, the size of a DVD collectionincreases.D. As the number of cups of coffee consumed increases, the price ofa dress increases.SUBMIT
General
4 months ago
Assume that you heat your home with a heat pump whose heat exchanger is at Tc=2∘C, and which maintains the baseboard radiators at Th=47∘C. If it would cost $1000 to heat the house for one winter with ideal electric heaters (which have a coefficient of performance of 1), how much would it cost if the actual coefficient of performance of the heat pump were 75% of that allowed by thermodynamics?
General
4 months ago
(Will award Brainlies & many many points, please help!)Use the graph to write an explicit function to represent the data and determine how much money Shelley earned in week 5.A] f(n) = 5(3)n − 1; f(5) = 405B] f(n) = 6(3)n − 1; f(5) = 486C] f(n) = 6(3)n; f(5) = 1,458D] f(n) = 6(3)n + 1; f(5) = 4,374
General
4 months ago
What are the soutions to the inequality (x-3)(x+5)<0
General
4 months ago
A store sold 24 sweatshirts. Red ones cost $10.95 and blue ones cost $12.50. Total of $289.15 worth of sweatshirts were sold. How many of each color were sold?
General
4 months ago
The population of the country of Oz was 600,000 in the year 2010. The population is expected to grow by a factorof 5% annually. The annual food supply of Oz is currently sufficient for a population of 700,000 people and isincreasing at a rate that will supply food for an additional 10,000 people per year.c. At what point does the population exceed the food supply? Justify your response.
General
4 months ago
HELP MATH QUESTIONS!! WILL MARK CORRECT ANSWERS BRAINLIEST!! 40 POINTS!! DUE TODAY ASAP!!
General
4 months ago
calcular lo que costará sembrar césped en un jardín de forma triangular de base 25 m y de altura 15m si cada metro cuadrado de césped cuesta $20 dólares
General
5 months ago
Two pipes are connected to the same tank. When working together., they can fill the tank in 10hrs. The larger pipe, working alone, can fill the tank in 15 hrs less time than the smaller one. How long would the smaller one take, working alone, to fill the tank
General
5 months ago
The rate (in mg carbon/m3/h) at which photosynthesis takes place for a species of phytoplankton is modeled by the function P = 120I I2 + I + 1 where I is the light intensity (measured in thousands of foot-candles). For what light intensity is P a maximum?
General
5 months ago
A line is parameterized by x=2+6???? and y=4+3????. (a) Which of the following points are on the section of the line obtained by restricting ???? to nonnegative numbers (for each, enter Y if the point is on the section, and N if not)? (−28,−11) : (8,7) : (26,16) : Then, give one more point that is on the section of the line obtained by this restriction: (b) What are the endpoints of the line segment obtained by restricting ???? to −2≤????≤1? left endpoint : right endpoint : (c) How should ???? be restricted to give the part of the line above the x-axis (give your answer as an interval for ????, for example, (3,8) or [-2,Inf))? ???? must be in :
General
5 months ago
A simple random sample of 1200 adult Americans is selected, and each person is asked the following question: "In light of the huge national deficit, should the government at this time spend additional money to establish a national system of health insurance?" Only 39% of those responding answered "Yes." This survey ____. a. is reasonable accurate since it used a large simple random sample. b. needs to be larger since only about 24 people were drawn from each state. c. probably understates the percent of people who favor a system of national health insurance. d. is very inaccurate but neither understates nor overstates the percent of people who favor a system of national health insurance. Because simple random sampling was used, it is unbiased. e. probably overstates the percent of people who favor a system of national health insurance.
General
5 months ago
Natalie is skiing along a circular ski trail that has a radius of 2.6 km. She starts at the 3-o'clock position and travels in the CCW direction. Natalie stops skiing when she is 0.942 km to the right and 2.423 km above the center of the ski trail. Imagine an angle with its vertex at the center of the circular ski trail that subtends Natalie's path. a. How many radians has the angle swept out since Natalie started skiing? ______radiansb. How many km has Natalie skied since she started skiing? _________km
General
5 months ago
Calamity Jane goes to the bank to make a withdrawal, and is equally likely to find 0 or 1 customers ahead of her. The service time of the customer ahead, if present, is exponentially distributed with parameter λ. What is the CDF of Jane’s waiting time?
General
5 months ago
After drawing the line y = 2x − 1 and marking the point A = (−2, 7), Kendall is trying to decide which point on the line is closest to A. The point P = (3, 5) looks promising. To check that P really is the point on y = 2x − 1 that is closest to A, what should Kendall do? Is P closest to A?
General
5 months ago
Prehistoric cave paintings were discovered in a cave in France. The paint contained 10 %10% of the original carbon-14. Use the exponential decay model for carbon-14, Upper A equals Upper A 0 e Superscript negative 0.000121 t=A0e−0.000121t, to estimate the age of the paintings.
General
5 months ago
Background: Based on the National Center of Health Statistics, the proportion of babies born at low birth weight (below 2,500 grams) in the United States is roughly .078, or 7.8% (based on all the births in the United States in the year 2002). A study was done in order to check whether pregnant women exposed to second hand smoke increases the risk of low birth weight. In other words, the researchers wanted to check whether the proportion of babies born at low birth weight among women who were exposed to second hand smoke during their pregnancy is higher than the proportion in the general population. The researchers followed a sample of 400 women who had been exposed regularly to second hand smoke during their pregnancy and recorded the birth weight of the newborns. Based on the data, the p-value was found to be .119.1.Based on the p-value, what is your conclusion (use .05 significance level)?
General
5 months ago
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