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Identify the graph of the equation. What is the angle of rotation for the equation? (Picture provided)
General
2 months ago
URGENT!!! Which expression is equivalent to cos(2α)cosα−sinα for all values of α for which cos(2α)cosα−sinα is defined?Select the correct answer below:2cosα+sinαcot2α−2cos2α2tanα1+tanα2sinα1−tan2α
General
2 months ago
Consider the equation below. (If an answer does not exist, enter DNE.) f(x) = 3 cos2(x) − 6 sin(x), 0 ≤ x ≤ 2π (a) Find the interval on which f is increasing. (Enter your answer using interval notation.) Find the interval on which f is decreasing. (Enter your answer using interval notation.) (b) Find the local minimum and maximum values of f. local minimum value local maximum value (c) Find the inflection points. (x, y) = (smaller x-value) (x, y) = (larger x-value) Find the interval on which f is concave up. (Enter your answer using interval notation.) Find the interval on which f is concave down. (Enter your answer using interval notation.) Need Help? Read It Watch It
General
2 months ago
Is it possible for two numbers to have a difference of 6, and also a sum of 6?
General
2 months ago
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and 191 lb. The new population of pilots has normally distributed weights with a mean of 136 lb and a standard deviation of 28.5 lb. a. If a pilot is randomly selected, find the probability that his weight is between 130 lb and 191 lb. The probability is approximately nothing. (Round to four decimal places as needed.) b. If 36 different pilots are randomly selected, find the probability that their mean weight is between 130 lb and 191 lb. The probability is approximately nothing. (Round to four decimal places as needed.) c. When redesigning the ejection seat, which probability is more relevant? A. Part (a) because the seat performance for a sample of pilots is more important. B. Part (b) because the seat performance for a sample of pilots is more important. C. Part (b) because the seat performance for a single pilot is more important. D. Part (a) because the seat performance for a single pilot is more important.
General
2 months ago
1. the domain set of C = {( 2, 5), (2, 6), (2, 7)} {2} 2. the range set of E = {(3, 3), (4, 4), (5, 5), (6, 6)} domain = range = {all real numbers} 3. the range and domain of F = {(x, y ) | x + y =10} domain = {all real numbers}: range = {y: y = 3} 4. the range and domain of P = {(x, y ) | y = 3} {3, 4, 5, 6}
General
2 months ago
The friendly sausage factory (fsf) can produce hot dogs at a rate of 5,000 per day. fsf supplies hot dogs to local restaurants at a steady rate of 260 per day. the cost to prepare the equipment for producing hot dogs is $66. annual holding costs are 45 cents per hot dog. the factory operates 294 days a year.a. find the optimal run size. (do not round intermediate calculations. round your answer to the nearest whole number.) optimal run sizeb. find the number of runs per year. (round your answer to the nearest whole number.) number of runsc. find the length (in days) of a run. (round your answer to the nearest whole number.)
General
2 months ago
A right triangle has legs measuring 4.5 meters and 1.5 meters. The length of a second triangle are proportional to the lengths of the legs of the first triangle. Which could be the length of the legs of the second triangle? A) 6m and 2m B) 8m and 5m C) 7m and 3.5m D) 10m and 2.5m E) 11.25 and 3.75m
General
2 months ago
Beatrice calculated the slope between two pairs of points. She found that the slope between (-3, -2) and (1, 0) is 12.She also found that the slope between (-2, -1) and (4, 2) is 12. Beatrice concluded that all of these points are on the same line. Use the drop-down menus to complete the statements about Beatrice's conclusion.Beatrice is (correct/incorrect). All of these points (are/ are not) on the same line because the slope between (-2,-1) and (1,0) (is/ is not) equal to 1/2.
General
2 months ago
Determine whether the graphs of the given equations are parallel, perpendicular, or neithery= 2x+13 Y= -2x+2A.ParallelB.PerpendicularC.Neither
General
2 months ago
A high school coach needs to buy new athletic shorts for the 15 members of the basketball team. The coach must spend less than $200 and needs to determine how much he can spend per pair of shorts. Write and solve an inequality to determine the maximum price for each pair of shorts. What does the solution represent?
General
2 months ago
Stormer Company reports the following amounts on its statement of cash flow: Net cash provided by operating activities was $37,000; net cash used in investing activities was $13,600 and net cash used in financing activities was $17,400. If the beginning cash balance is $6,800, what is the ending cash balance?
General
2 months ago
The Golden Braid Bookstore currently has $340,000 in cash, $280,000 in inventory, and $40,000 in accounts receivable. The company also has $65,000 in accounts payable, and $15,000 in other current liabilities. What is its quick ratio?
General
2 months ago
Suppose your grandfather earned a salary of $12,000 in 1964. If the CPI is 31 in 1964 and 219 in 2016, then the value of your grandfather's salary in 2016 dollars is approximately
General
2 months ago
Use the standard normal distribution or the t-distribution to construct a 99% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results. In a random sample of 42 people, the mean body mass index (BMI) was 28.3 and the standard deviation was 6.09.
General
2 months ago
A poll asked the question, "What do you think is the most important problem facing this country today?" Twenty percent of the respondents answered "crime and violence." The margin of sampling error was plus or minus 4 percentage points. Following the convention that the margin of error is based on a 95% confidence interval, find a 95% confidence interval for the percentage of the population that would respond "crime and violence" to the question asked by the pollsters.
General
2 months ago
Two surveys were done regarding credit card debt. Survey #1: Five years ago the average credit card debt was $6618. â€‹Survey #2:The average credit card debt for a recent year was $9205. Assume sample sizes of 35 were used and the standard deviations of both samples were $1928. Is there enough evidence to believe that the average credit card debt has changed in the past 5 years? Assume a 5% Level of Significance
General
2 months ago
Water use in the summer is normally distributed with a mean of 311.4 million gallons per day and a standard deviation of 40 million gallons per day. City reservoirs have a combined storage capacity of 350 million gallons. The probability that a day requires more water than is stored in city reservoirs is P(X > 350)= 1 - P (Z < b). What is the value of b? Please report your answer in 3 decimal places.
General
2 months ago
The radius, diameter, or circumference of a circle is given. Find the missing measures. Round to the nearest hundredth if necessary. r = 7.8 mm, d = ? , C = ? Question 1 options: d = 15.6 mm, C = 24.50 mm d = 15.6 mm, C = 49.01 mm d = 3.9 mm, C = 49.01 mm d = 3.9 mm, C = 24.50 mm
General
2 months ago
roblem: Report Error A partition of a positive integer $n$ is any way of writing $n$ as a sum of one or more positive integers, in which we don't care about the order of the numbers in the sum. For example, the number 4 can be written as a sum of one or more positive integers (where we don't care about the order of the numbers in the sum) in exactly five ways: \[4,\; 3 + 1,\; 2 + 2,\; 2 + 1 + 1,\; 1 + 1 + 1 + 1.\] So 4 has five partitions. What is the number of partitions of the number 7?
General
2 months ago
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