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Jada Elena and Lin walked a total of 37 miles last week. jada walked 4 more miles that elena, and Lin walked 2 more miles than jada.
General
2 months ago
Some help would be greatly appreciated: :)1. Price: 1.00| 2.00| 3.00| 4.00| Sales Tax: 0.06, 012, 0.18, 024, Find the constant of variation, k, for the above table. What does this represent?2. What is the direct variation equation for the table above, using t for sales tax and p for price?A. t= p+0.06B. t= 0.06pC. t= P/0.06D. t=0.06/p3. What is the sales tax on a purchase of $15.60A. $0.94 B. $1.88 C. $2.60 D. $9.365. Price: 1.00, 2.00, 3.00, 4.00, From the closing question what are the entries for the column total price plus sales tax in the above table?6. What is the value of the constant of variation, k, for the above table?A: 0.06 B: 1.06 C: 2.12 D: 4.247. Which is the direct variation equation for the table in question 5 using "s" for sale price and "T" for total price?A: T=s+1.06B. T=s+2.12C. T=0.06sD. T=1.06s
General
2 months ago
Which best explains whether 9 is a solution to the inequality x > 9 A. It is not a solution because 9 is not greater than 9.B. It is not a solution because 9 is not less than 9.C. It is a solution because 9 is greater than 9.D. It is a solution because 9 is less than 9.
General
2 months ago
Express the complex number in trigonometric form. -6 + 6 [tex]\sqrt{3}[/tex] i
General
2 months ago
Make up an equation of the form y = kx +b, the graph of which passes through the following points: A (8, –1) and B (–4, 17)
General
2 months ago
SOMEONE PLEASE HELP!!!
General
2 months ago
Solve for x 4x^2=4x-1
General
2 months ago
Use the numbers 1-12 one time each to creat four true statements with addition, multiplication, subtraction and division
General
2 months ago
. In a competitive examination, one mark is awarded for each correct answer, while ½ mark is deducted for each wrong answer. Jayanti answered 120 questions and got 90 marks. How many questions did she answer correctly?
General
2 months ago
The number of licensed drivers in four samples taken from a population of students are shown in the table below. Which of the following choices is most likely closest to the percentage of students in the population who are licensed drivers
General
2 months ago
Assuming that X is a binomial random variable with n = 10 and p = 0.25, find the probability, P for each of the following values of X. (a) X = 5. (Give the answer to four decimal places.) P(X = 5) = (b) X = 2. (Give the answer to four decimal places.) P(X = 2) = (c) X = 1. (Give the answer to four decimal places.) P(X = 1) = (d) X = 9. (Give the answer to seven decimal places.) P(X = 9) =
General
2 months ago
3 friends share the cost of a video game. If the game costs $74.79 including tax, what is the best estimate to the nearest dollar of the amount each friend will pay?
General
2 months ago
The ratio of the number of tomato plants in Inessa’s garden to the number of tomato plants in Ralph’s garden was 5:6. After 1/2 of the tomato plants from Inessa’s garden were replanted into Ralph’s garden, Ralph’s garden had 850 tomato plants. How many tomato plants did Ralph’s garden have in the beginning?
General
2 months ago
A student wanted to construct a 99% confidence interval for the mean age of students in her statistics class. She randomly selected nine students. Their mean age was 19.1 years with a sample standard deviation of 1.5 years. What is the 99% confidence interval for the population mean?
General
2 months ago
A survey of 10 resturants in a fast food resturant group showed a mean customer satisfaction index of 73 with a standard deviation of the index is 6. What is the margin of error if 99% confidence is desired?
General
2 months ago
In the largest clinical trial ever conducted, 401,974 children were randomly assigned to two groups. The treatment group consisted of 201,229 children given the Salk vaccine for polio, and the other 200,745 children were given a placebo. Among those in the treatment group, 33 developed polio, and among those in the placebo group, 115 developed polio. If we want to use the methods for testing a claim about two population proportions to test the claim that the rate of polio is less for children given the Salk vaccine, are the requirements for a hypothesis test satisfied? Explain.
General
2 months ago
A toy manufacturer wants to know how many new toys children can buy each year. He thinks the mean is 6.9 toys per year. Assume a previous study found the standard deviation to be 1.3. How large a sample would be required in order to estimate the mean number of toys bought per child at the 98% confidence level with an error at most 0.11 toys?
General
2 months ago
A group of students consists of five people in all; two women and three men. They agree to take turns taking notes in lecture. One person at a time will be selected at random from the group (without replacement) until everyone has had a turn. The expected value of the number of people selected before and including the first time a woman has a turn is ________ .
General
2 months ago
An honest coin is flipped 4 times. Given that the coin landed heads up more than two, what is the probability that it landed heads up all four times?
General
2 months ago
In a random sample of 8 people, the mean commute time to work was 36.5 minutes and the standard deviation was 7.4 minutes. A 98% confidence interval using the t-distribution was calculated to be (28.7,44.3). After researching commute times to work, it was found that the population standard deviation is 8.7 minutes. Find the margin of error and construct a 98% confidence interval using the standard normal distribution with the appropriate calculations for a standard deviation that is known. Compare the results.The margin of error of u is ___A 98% confidence interval using the standard normal distribution is (__,__)Compare the results. Choose the correct answer below.a. the confidence interval found using the standard normal distribution has smaller lower and upper confidence interval limitsb. the confidence interval found using the standard normal distribution is wider than the confidence interval found using the students t-distributionc. the confidence interval found using the standard noraml distribution is the same as the confidence interval found using the students t-distributiond. the confidence interval found using the standard normal distrubution is narrower than the confidence interval found using the students t-distribution
General
2 months ago
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