Mathematics

Math is not my best subject
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in a survey of some people, it was found that the ratio of the people who liked pop songs and rap songs is 7:9. out of which, 60 people liked both songs, 30 liked rap songs only and 40 liked none of the songs. find the number of people who did not like pop songs.Solve with steps.
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Peter gets a part-time job cleaning and maintaining his community's swimming pool and spa. 40 Here are some facts about the pool and spa. There is an outlet for a vacuum halfway along the side of the pool. What is the approximate length the hose should be to reach any part of the pool surface from there? Show your work. Answer Between _and _ft.
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A solid is made by a hemisphere and cylinder having equal radii. The volume of the solid is 2707 cm'. If the height of the cylinder is 80 cm, find the total surface area of the solid
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NASA launches a rocket at t=0 seconds. Its height, in meters above sea-level, as a function of time is given by h(t)=4.9t^2+43t+339.(A) Assuming that the rocket will splash down into the ocean, at what time does splashdown occur? (Round answer to 2 decimal places)The rocket splashes down after seconds._______(B) How high above sea-level does the rocket get at its peak? (Round answer to 2 decimal places)The rocket peaks at _____ meters above sea-level._____
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(3. 5 points) use the given data in problem 33 (page 302) to answer the following questions. Assume that population data follow normal distribution. (a) (1. 5 points) calculate a two-sided 95% confidence interval for true average degree of polymerization. (b) (one points) does the interval suggest that 440 is a plausible value for true average degree of polymerization? explain. (c) (one point) does the interval suggest that 450 is a plausible value for true average degree of polymerization? explain
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The screen of a tablet has dimensions 8 inches by 5 inches. Theborder around the screen has thickness z.a. Write an expression for the total area of the tablet, including theframe.8 inches5 inchesb. Write an equation for which your expression is equal to 50.3125. Explain what a solution to thisequation means in this situation.c. Try to find the solution to the equation. If you get stuck, try guessing and checking. It may help tothink about tablets that you have seen.
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Find the trig ratio, reduce and enter your answer in the lowest terms. Please help!
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Check all that are inequalities. -3 = yt > 0-4. 3 < ag = 5 and one-halfk less-than Negative StartFraction 5 Over 7 EndFractionx = 1Anwer: B C E
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Find the height of a skyscraper if you know that its top is 1000 feetfrom a point on the ground and its base is 200 feet from the samepoint.
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A cylindrical can without a top is made to contain 181 in^3 of liquid. Find the dimensions that will minimize the cost of the metal to make the can.
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A box in the shape of a right rectangular prism has a length of 8.5 inches, a width of 4.5 inches, and a height of 3.75 inches, What is the volume, in cubic inches, of the box?
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im gonna be sending a lot of problems since i wasnt in my class for the lesson
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You want to know the approximate height of a tall oak tree. You place a mirror on the ground and stand where you can see the top of the tree in the mirror. How tall is the tree? The mirror is 24 feet from the base of the tree. You are 36 inches from the mirror and your eyes are 5 feet above the ground. Round your answer to the nearest tenth
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El volumen de este prisma rectangular es de 6 centmetros cbicos. Cul es el rea de superficie?
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For a triangle ABC , the length of AC and BC are given and is acute. Justify if it is possible to have BC
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25 points! if 1000 raffle ticket are sold for $1 each and there are ten $20, five $50, and one $100 prize, what is the expected value of a ticket?
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Find the surface area of this regular pyramid
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Solve the triangle. Round decimal answers to the nearest tenth.
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Find the slope of the line that passes through A (3, 7) and B (7, 10).
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The profit from selling local ballet tickets depends on the ticket price. Using past receipts, we find thatthe profit can be modeled by the function p= -0. 25x2 +30% +6, where x is the price of each ticket. Howmany tickets have to be sold in order to make a profit of $281?
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For items A and B, us this data set of the price, in dollars, of a milkshake at five different restaurants:4,2,9,14,6. If necessary, round your answer to the nearest tenth of a unit. Decimal answers must round to tenth place. (I need help, quick!)
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I will give 30 points to whoever answers|x +3| if x >5|x +3| if x >2|x +3| if x =2|x 3| if x >5|120+x| if x < 120|x 120| if x < 120|x (12)| if x > 12|x (12)| if x < 12|x (12)| if x = 12|x 3| if x >0|x 3| if x
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For f(x)=3x+4 and g(x)=x^2 find the following composite functions and state the domain of each.
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