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MATH SOLVE
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You roll a fair die three times. What is the probability of each of the following? a) You roll all 4's. b) You roll all even numbers. c) None of your rolls gets a number divisible by 2. d) You roll at least one 2. e) The numbers you roll are not all 2's.
General
1 month ago
A function y(t) satisfies the differential equation dy dt = y4 − 6y3 + 5y2. (a) What are the constant solutions of the equation? (Enter your answers as a comma-separated list.) y = __. (b) For what values of y is y increasing? (Enter your answer in interval notation.) y is in ___.(c) For what values of y is y decreasing? (Enter your answer in interval notation.) y is in ___.
General
1 month ago
Find the absolute extrema of f(x) = e^{x^2+2x}f ( x ) = e x 2 + 2 x on the interval [-2,2][ − 2 , 2 ] first and then use the comparison property to find the lower and upper bounds for I = \displaystyle \int_{-2}^{2} f(x) \, dxI = ∫ − 2 2 f ( x ) d x.
General
1 month ago
Which of the following is an example of a quantitative variable? A) The color of an automobile B) A person's zip code C) A person's height, recorded in inches D) Both B and C
General
1 month ago
Given that the first term is LaTeX: t_1=5t 1 = 5, and the recursive definition is LaTeX: t_{n+1}=3\cdot t_nt n + 1 = 3 ⋅ t n, what would be the second term (i.e. LaTeX: t_2t 2)Group of answer choices35815
General
1 month ago
The equation S = -16t2 + 34t + 184 models the height of a ball that is thrown upward from the roof of a 184 foot building and falls to the street below. In this equation S is the height in feet of the ball above the ground and t is the time in seconds the ball has traveled. According to this model, how many seconds did it take the ball to reach a height of 91 feet? (round to 1 decimal place)
General
1 month ago
Solve the equation and show all work. 4|x + 1/3| = 20 i'm kind of stuck hhh
General
1 month ago
A bag contains purple marbles and white marbles, 34 in total. The number of purple marbles is 1 less than 4 times the number of white marbles. How many purple marbles are there?
General
1 month ago
the circular ripple caused by dropping a stone in a pond is increasing in area at a constant rate of 20 square meters per second. Determine how fast the radius of this circular ripple is increasing when the area of the circular region is 25 pi
General
1 month ago
For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 505 and a standard deviation of 170. The grading process of this year's exam has just begun. The average score of the 35 exams graded so far is 530.What is the probability that a sample of 35 exams will have a mean score of 530 or more if the exam scores follow the same distribution as in the past?
General
1 month ago
kiaria is 7 years alder tham jay . martha is twice as old as kiaria , the sum of their three ares is 7u , find the ratio of jay,s age to kiatias age to marhas age
General
1 month ago
A sphere with a radius of 6 cm has the same volume as a cone with a height of 6 cm. What is the radius of the cone?A) 2 cm B) 4 cm C) 8 cm D) 12 cm
General
1 month ago
Consider the sequence: 5, 7, 11, 19, 35,....Write an explicit definition that defines the sequence: a_n = 2n + 3a_n = 3n + 2a_n = 3n^2a_n = 2^n + 3
General
1 month ago
A certain company has 255 employees. If an employee is to be selected at random from the company's employees, is the the probability less than 1/2 that the employee selected will be a woman who has a college degree?(1) 130 of the company's employees do not have a college degree(2) 125 of the company's employees are men
General
1 month ago
In the 6/55 lottery game, a player picks six numbers from 1 to 55. How many different choices does the player have if repetition is not allowed? Note that the order of the numbers is not important.
General
1 month ago
The mean life span of a brand name tire is 50,000 miles. Assume that the life spans of the tires are normally distributed, and the population standard deviation is 800 miles. a. If you select one tire, what is the probability that its life span is less than 48,500 miles? b. If you select 100 tires, what is the probability that their mean life span is more than 50,200 miles?
General
1 month ago
coin is flipped four times. For each of the events described below, express the event as a set in roster notation. Each outcome is written as a string of length 4 from {H, T}, such as HHTH. Assuming the coin is a fair coin, give the probability of each event. (a) The first and last flips come up heads. (b) There are at least two consecutive flips that come up heads. (c) The first flip comes up tails and there are at least two consecutive flips that come up heads.
General
1 month ago
A tree shadow is 95 cm long. At the same time of the day Samantha stands next to the tree in measures her shadow to be 30 cm long. Samantha is 150 cm tall. What is the height of tree in centimeters
General
1 month ago
a cat owner paid the vet a fee of$269.50 for a years worth of visits. he made 14 visits that year. what was the average per cost?
General
1 month ago
solve the systems of equations by subsiturion y=x+15y=2xnext questiony=x+124x+2y=27
General
1 month ago
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