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MATH SOLVE
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Ice is forming on a pond at a rate given by dydt=kt√, dydt=kt, where yy is the thickness of the ice in centimeters at time tt measured in hours since the ice started forming, and kk is a positive constant. find yy as a function of tt.
General
4 months ago
I have 3 types of shapes: triangle, square or circle in the ratio 3:6:1. The triangles are either red or blue. The ratio of red triangles to blue triangles is 4:5. Given that I have 12 red triangles, how many circles are there
General
4 months ago
What is normal, when it comes to people's body temperature? a random sample of 130 human body temperatures, provided by allen shoemaker in the journal of statistical education, had a mean of 98.25◦ and a standard deviation of 0.73◦ . (a) does the data indicate that the average body temperature for healthy humans is different from 98.6◦ , the usual average temperature cited by physicians and others? test using α = 0.01. (b) what is the p-value?
General
4 months ago
The distance on a map between a student’s house and her job is 4 centimeters. On the same map, the distance between her house and her school is 6 centimeters. The actual distance from her house to school is 9 kilometers. If d represents the approximate distance in kilometers between her house and her job, what is d? A. 6 km B. 9 km C. 12 km D. 18 kmHURRY i need this fast!!!!!!!!!!!
General
4 months ago
Find an expression for the induced current i(t) as a function of time. express your answer in terms of the variable t.
General
4 months ago
Find an equation of the tangent to the curve at the point corresponding to the given value of the parameter. x = t3 + 1, y = t10 + t; t = −1
General
4 months ago
What is the surface area of a sphere with a diameter of 12 centimeters? (Use 3.14 for π .) 1,808.64 cm 2 452.16 cm 2 150.72 cm 2 301.44 cm 2
General
4 months ago
Let p: x = 4 Let q: y = −2 Which represents "If x = 4, then y = −2”? p ∨ q p ∧ q p → q p ↔ q
General
4 months ago
Use the drop-down menus to choose steps in order to correctly solve 1+2b−13=12−4b−2b1+2b-13=12-4b-2b for b
General
4 months ago
The half-life of carbon-14 is 5730 years. How long will it take for 7/8 of a sample of carbon-14 to decay? 11,460 years 17,190 years 22,920 years 28,650 years
General
4 months ago
Conor buys 75 tokens for games at the arcade. the price to play each game is 3 tokens. if conor has already played x games, which expression is equivalent to the number of tokens that remain?
General
4 months ago
A professor wants to arrange his books on a shelf. he has 30 books and only space on the shelf for 20 of them. how many different 20-book arrangements can he make using the 30 books? this is an example of a problem that can be solved using which method?
General
4 months ago
A survey was conducted that asked 1011 people how many books they had read in the past year. results indicated that x overbarequals14.8 books and sequals16.6 books. construct a 90% confidence interval for the mean number of books people read. interpret the interval
General
4 months ago
At one vehicle inspection station, 13 of 52 trucks and 11 of 88 cars failed the emissions test. assuming these vehicles were representative of the cars and trucks in that area, what is the standard error of the difference in the percentages of all cars and trucks that are not in compliance with air quality regulations?
General
4 months ago
The tank shown is a cylinder with diameter equal to 4 feet and height equal to 12 feet. the tank holds 1130 gallons of rainwater when full. how many gallons of water are in the tank when the depth of the water is 9 feet?
General
4 months ago
The sum of the digits of a two-digit number is 16. if the digits are reversed, the new number is 18 less than the original number. find the original number.
General
4 months ago
The height of a triangular road sign is 1 inch shorter than twice its base. if the area of the sign is 60 in.2, which equation could be used to find the base (b) of the sign?
General
4 months ago
The quality control engineer for a furniture manufacturer is interested in the mean amount of force necessary to produce cracks in stressed oak furniture. she performs a two-tail test of the null hypothesis that the mean for the stressed oak furniture is 650. the calculated value of the z test statistic is a positive number that leads to a p-value of 0.080 for the test. 22 referring to scenario 9-6, suppose the engineer had decided that the alternative hypothesis to test was that the mean was greater than 650. what would be the p-value of this one-tail test? 0.040 0.960 0.840 0.160
General
4 months ago
You have a 45-gallon jug and a 124-gallon jug. neither of the jugs has any markings (although you do know their capacities). describe a way to measure exactly one gallon of water.
General
4 months ago
HELPGiven right triangle ABC. In the given right triangle, find the length of the hypotenuse, AB, if BC = 6 and AC = 5. A.5B.√36C.√61D.√11
General
4 months ago
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