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MATH SOLVE
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General
For each function f, find f^-1 and the domain and range of f and f^-1. f(x)=3x+4
General
3 months ago
Agent Bond is standing on a bridge, 13.5 m above the road below, and his pursuers are getting too close for comfort. He spots a flatbed truck approaching at 25 m/s, which he measures by knowing that the telephone poles the truck is passing are 25 m apart in this region. The roof of the truck is 3.5 m above the road, and Bond quickly calculates how many poles away the truck should be when he drops down from the bridge onto the truck, making his getaway.How many poles is it?
General
3 months ago
At the beginning of the semester students reported that they spend an average of 5 hours per day watching television, decreasing at an average rate of 30 minutes per week. Professors reported that they spend an average of 1 hour per day watching television, increasing at an average rate of 30 minutes per week. (Source: Blitzer: Thinking Mathematically, 2019) a. Write a function, S, for the amount of time students watch television during week, x. b. Write a function, P, for the amount of time professors watch television during week, x. C. By which week do students and professors both watch the same number of hours of television? How many hours?
General
3 months ago
a) From the set {-8, -2/3, 5i, √(-9), √2, 0, 3+3i, -2.35, 7}i) List the set of Natural Numbersii) List the set of Integersiii) List of the set of Rational Numbersvi) List the set of Real Numbers (4 marks)b) i) -30 ÷ -6 - (-12 + 8) – 4 x 3 =
General
3 months ago
Solve the following differential equation using using characteristic equation using Laplace Transform i. ii y" +y sin 2t, y(0) 2, y'(0) 1
General
3 months ago
If the fifth term of a AP is 19 and the tenth term is 34 Find:- a) the first term b) The common difference c) The sum of the first 15 term
General
3 months ago
What was the average speed in km/h of:a boat that moves 15.0 km across a lake in 45 min? make sure that youdon’t forget to convert minutes into hours (1 hour= 60 minutes).
General
3 months ago
a) i) If 4 individuals are selected from a group of 7 people, how many possible selection option could be made?ii) In a competition prizes are given to 6 of the 10 participants. How many possible prize lists could be made if they are given different prizes?b) In how many ways can the letters of the word SEMESTER be rearranged?
General
3 months ago
a) i) Calculate the simple interest earned if a deposit of $ 900,000 is left for 12 years at an interest rate of 3% .ii) Calculate the interest rate for a 12 years investment of $600,000 to gained $180,000 interest.Solve the following pairs of simultaneous equations 3x + y = 7 and 2x - 2y = 2
General
3 months ago
In a GP if T3 = 18 and T6 = 486 Find:- T10
General
3 months ago
A study found that a large group of late lunch eaters lost less weight over a 20-week observation period than a large group of early lunch eaters (P = 0.002).16 Explain what this P = 0.002 means in a way that could be understood by someone who has not studied statistics.
General
3 months ago
A 2014 study by the reputable Gallup organization estimates that 44% of U.S. adults are underemployed. Underemployed means the person wants to work full time but is employed part time or unemployed. We want to know if the proportion is smaller this year. We select a random sample of 100 U.S. adults this year and find that 40% are underemployed. After carrying out the hypothesis test for p = 0.44 compared to p < 0.44, we obtain a P?value of 0.21. Which of the following interpretations of the P?value is correct?A. There is a 21% chance that 44% of U.S. adults are underemployed this yearB. There is a 21% chance that 40% of U.S. adults are underemployed this year.C. There is a 21% chance that 40% or fewer U.S. adults are underemployed this year if 44% were underemployed in 2014.D. There is a 21% chance that a sample of 100 U.S. adults will have 40% or fewer underemployed if 44% of the population is underemployed this year.
General
3 months ago
The specification for the pull strength of a wire that connects an integrated circuit to its frame is 10 g or more. In a sample of 83 units made with gold wire, 70 met the specification, and in a sample of 115 units made with aluminum wire, 98 met the specification. Find a 99% confidence interval for the difference in the proportions of units that meet the specification between units with gold wire and those with aluminum wire.
General
3 months ago
In a recent survey of high school students, it was found that the average amount of money spent on entertainment each week was normally distributed with a mean of $52.30 and a standard deviation of $18.23. Assuming these values are representative of all high school students, what is the probability that for a sample of 25, the average amount spent by each student exceeds $60?A) 0.3372B) 0.0174C) 0.1628D) 0.4826
General
3 months ago
In recent years more people have been working past the age of 65. In 2005, 27% of people aged 65–69 worked. A recent report from the Organization for Economic Co-operation and Development (OECD) claimed that percentage working had increased (USa today, November 16, 2012). The findings reported by the OECD were consistent with taking a sample of 600 people aged 65–69 and finding that 180 of them were working.a. Develop a point estimate of the proportion of people aged 65–69 who are working.b. Set up a hypothesis test so that the rejection of h0 will allow you to conclude that theproportion of people aged 65–69 working has increased from 2005.c. Conduct your hypothesis test using α 5 .05. What is your conclusion?
General
3 months ago
Represent the following sentence as an algebraic expression, where "a number" is theletter x. You do not need to simplify.7 is subtracted from seven times a number.
General
3 months ago
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Hey im struggling really bad in math and im n o t sure how to start this. PLEASE HELP (This is not a test its homework) I HAVE SOME WHAT I UNDERSTAND DONE. Noah has just graduated high school and has some credit card offers! The first credit card (Credit Card A) charges 18% compounded semi-annually. The second credit card (Credit Card B) charges 19% compounded monthly. The third credit card (Credit Card C) charges 20% compounded annually.Which credit card do you assume will be the best deal? _____Credit card B_______Noah isn’t sure which credit card is the best deal, so he wants to do some comparison. You’re going to help him out using the skills you learned in the Exponents Unit to create some equations and graphs to determine the best deal. Answer the following questions to get started. Check out your textbook and recent lessons for help.(1pt) What is the formula for compound interest? A=P(1+I r/n)^nt A is the ending amount P is principle. R is the interest. N is the number of compounding a year, and T is the total number of years. 1. (1pt) How many times are you compounding the interest rate if you compound:a. Semi-annually Twice a year. b. Monthly Once a month c. Annually. Once a year. Let’s suppose he is going to buy a smartphone for $605.99 and put the entire balance on the credit card. 3. (1pt) Create a simplified equation representing what credit card A would charge. ________________________________________________________________________________________________________________4. (1pt) Create a simplified equation representing what credit card B would charge. ________________________________________________________________________________________________________________5. (1pt) Create a simplified equation representing what credit card C would charge. ________________________________________________________________________________________________________________
General
3 months ago
At the spring dance there were 23 more students than 6 times the number of teachers. There were 215 students that attended the dance. How many teachers attended the dance? A. 23 Teachers B. 138 Teachers C. 40 Teachers D. 32 Teachers
General
3 months ago
50 points. How do I find circumference? I don't need just the formula, I need the whole process, and maybe an example please and thank you <3. I'd appreciate if you didn't just copy and paste an answer just to answer the question and get points. That'd be horribly selfish. Please know that I have a test tomorrow that will decide if I get into High School, so please, no copy-pasting. Thank you guys!
General
3 months ago
The total number of participants who went on the field trip consisted of all 7th grade students and 7 adult chaperones. 2/3 of the total participants rode a large bus and the rest rode a smaller bus. If 54 of the students rode the large bus, how many students went on the field trip? Show Work!(A) 36 students(B) 54 students(C) 74 students(D) 90 students
General
3 months ago
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