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MATH SOLVE
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There are 318 fiction books in the class library. The number of nonfiction books is 47 less than the number of fiction books. How many fiction and non fiction books are there in the class library
General
2 months ago
A player of a video game is confronted with a series of opponents and has an 80% probability of defeating each one. Success with any opponent is independent of previous encounters. Until defeated, the player continues to contest opponents. a. What is the probability mass function of the number of opponents contested in a game? b. What is the probability that a player defeats at least two opponents in a game? c. What is the expected number of opponents contested in a game? d. What is the probability that a player contests four or more opponents in a game?
General
2 months ago
If the figure has rotational symmetry, list the angles of rotation less than 360°. Enter the angles from least to greatest, separated by commas. If the figure does not have a rotational symmetry, enter the number zero. The list of angles of rotation is ??
General
2 months ago
Mrs.State needs help solving a math problem.Mrs.Krutchik’s planned to give 45 tests to 108 children. 67•/• of the students got F’s. The rest got A’s how many students got A’s in Mrs.Krutchik’s class?
General
2 months ago
3. Find the perimeter of quadrilateral ABCD with vortices 4(-2,-2), B(-1,3),c(5, 3), and D(4, -2).
General
2 months ago
Tea costs $4.48 for 8 ounces. What is the cost per one ounce?Question 1 options:$1.79 per ounce$0.56 per ounce$35.84 per ounce$0.056 per ounceQuestion 2 (2 points) Jaziah bought 6 1/2 pounds of bananas for $5.20. What is the cost per pound of bananas?Question 2 options:$0.08 per pound of bananas$0.88 per pound of bananas$0.80 per pound of bananas $0.89 per pound of bananasQuestion 3 (2 points) The values in the table show the relationship between times measured in seconds and distances measured in meters.Seconds (x) Meters (y)5 2010 4015 6020 80What is the constant of proportionality that relates meters (y) to seconds (x)?Question 3 options:4 meters per second5 meters per second1/4 meters per second 1/5 meters per secondQuestion 4 (2 points) A bakery uses a muffin recipe that uses 1/2 cup of milk for every batch of 12 muffins. Based on the recipe, how many muffins can you make with 1 cup of milk?Question 4 options:6121824Question 5 (2 points) The table shows a proportional relationship between the number of pounds of grapes purchased and the total cost of the grapes.Number of pounds Total cost 4 $2.767 $4.839 $6.2112 $ 8.28What is the cost per pound? Question 5 options:$1.45 per pound$0.69 per pound$0.069 per pound$1.44 per poundQuestion 6 (2 points) Seth's family plans to drive 240 miles to their vacation spot. They would like to complete the drive in 5 hours. What speed, in miles per hour, will they have to drive to make the trip in the desired amount of time?Question 6 options:60 miles per hour 0.023 miles per hour 48 miles per hour4 miles per hourQuestion 7 (2 points) A nine kilogram bag of animal feed costs $45.45. What is the unit price per kilogram?Question 7 options:$5.50 per kilogram$5.05 per kilogram$10.10 per 2 kilograms$10.01 per kilogram
General
2 months ago
Raj’s bathtub is clogged and is draining at a rate of 1.5 gallons of water per minute. The table shows that the amount of water remaining in the bathtub, y, is a function of the time in minutes, x, that it has been draining.
General
2 months ago
Solve 12x×124=128 solve real quickly
General
2 months ago
Find the value of x. A.20 B.25 C.18.75 D.22.5
General
2 months ago
|60| ___ |-60|a >b =c
General
2 months ago
A manager of an apartment store reports that the time of a customer on the second floor must wait for the elevator has a uniform distribution ranging from 2 to 4 minutes. If it takes the elevator 30 seconds to go from floor to floor, find the probability that a hurried customer can reach the first floor in less than 3.5 minutes after pushing the elevator button on the second floor."
General
2 months ago
Find the volume of the solid S between the surfaces z equals 4 e Superscript x minus y and z equals negative 3 e Superscript x minus y, where S intersects the xy-plane in the region Upper R equals StartSet (x comma y ): 0 less than or equals x less than or equals y comma 0 less than or equals y less than or equals 1 EndSet.
General
2 months ago
If X is a geometric random variable, show analytically that P(X = n+k|X >n) = P(X = k) .Give a verbal argument using the interpretation of a geometricrandom variable as to why the preceding equation is true.A geometric random variable is a discrete random variable with aprobability mass function defined as follows:p(n)=(1-p)n-1p, n=1,2,....where 0 < p < 1.
General
2 months ago
An rock is dropped from a 202-foot platform. Use the projectile formula to determine when the rock hit the ground. Note that since the rock is dropped, v0=0.The rock will hit the ground after how many seconds?
General
2 months ago
IQ scores (as measured by the Stanford-Binet intelligence test) in a certain country are normally distributed with a mean of 90 and a standard deviation of 17. Find the approximate number of people in the country (assuming a total population of 323,000,000) with an IQ higher than 135. (Round your answer to the nearest hundred thousand.)
General
2 months ago
It is known that screws produced by a certain company will b defective with probability .01 independently of each other. the company sells the screws in packages of 25 and offers a money back guarantee that at most 1 of the 25 is defective, using Poisson approximation for binomial distribution the probability that the company must replace a package is approximatelya).01b).1947c).7788d).0264e).2211
General
2 months ago
Previously, an organization reported that teenagers spent an average of 4.1 hours per week, on average, on the phone. The organization thinks that, currently, the mean is higher. Fifteen randomly chosen teenagers were asked how many hours per week they spend on the phone. The sample mean was 5.25 hours with a sample standard deviation of 2.0. What are the null and alternate hypotheses?
General
2 months ago
A large school district in Connecticut wants to estimate the average SAT score of this year's graduating class using a 95% confidence interval. The district takes a simple random sample of 100 seniors. The sample mean is 510 and the population standard deviation for SAT scores is known to be 75. What is the 95% confidence interval for µ?
General
2 months ago
Equation 1: 8x+2y=308x+2y=30Equation 2: 7x+2y=247x+2y=24Which variable pair should we try to eliminate?The x's because the coefficients are the same.The y's because the coefficients are the same.The x's because the coefficients are different?The y's because the coefficients are different?Now that we've eliminated the variable pair, what is the resulting equation?15y+4y=5415y+4y=54x+4y=54x+4y=544y=64y=6Consider the following system of equations:Equation 1: 8x+2y=308x+2y=30Equation 2: 7x+2y=247x+2y=24What is the solution to the system?(6,8)(6,-9)(1,11)(0,12)
General
2 months ago
A man throws a ball into the air with a velocity of 96 ft/s. Use the formula h=−16 t 2 + v 0 t to determine when the height of the ball will be 48 feet. Round to the nearest tenth.
General
2 months ago
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