04/02/20

Statistics problem
How large of a sample must be drawn so that 98% confidence interval for μ will have a margin of error equal to $133 and σ=$530
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04/02/20

How do I find the density: a wooden cube has an edge length of 6 cm and a mass of 137.8 g. Round to the nearest thousandth
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04/02/20

Quadratic equations

The amount of trout y (in tons) caught in a lake from 1995 to 2014 can be modeled by the equation y=-0.08x2 + 1.6x + 10, where x is the number of years since 1995.Part a.) When were about 15 tons... more
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04/02/20

Find the rental cost for each movie and each video game
One month alan rented 12 movies and 2 video games for a total of $41. The next month he rented 3 movies and 5 video games for a total of $35. Find the rebtal cost for each movie and each video game.
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04/01/20

sin2x/1-sin^x = 2tanx
prove the identity above
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04/01/20

sin^2 x(1+cot^2 x)=1
prove the identity above
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04/01/20

I'm stuck on how to solve for a probability in this question!
I've had problems with probability; I've been given this question on some homework of mine and I'm not quite sure how to even approach this."The average number of howler monkeys seen on a one-day... more
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04/01/20

Given: Circle k(O), O∈ PL KE - tangent at E KE=18, PL=15 Find: KP
Given: Circle k(O), O∈PL   KE - tangent at EKE=18, PL=15    Find:  KP
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04/01/20

Write an equation of the line passing through point P(2, 3) that is perpendicular to the line y−4 = −2(x+3) .
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04/01/20

Question in desc.
To make green glowing paint, blue and yellow are mixed 3 to 4.How much blue and yellow paint should the store mix to make 50 gallons of glowing green paint?
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04/01/20

Geometry Word Problem
From 15,000 graphing calculators produced by a​ manufacturer, an inspector selects a random sample of 450 calculators and finds 4 defective calculators. Estimate the total number of defective... more
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04/01/20

The volume of a cube is related to the area of a face by the formula V= A^3/2. What is the volume of a cube whose face has an area of 49cm^2
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04/01/20

Given csc A = radical 85 over 2 and that angle A is in Quadrant I, find the exact value of sec A in simplest radical form using a rational denominator.
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04/01/20

David leaving his house
David leaves his house to go to school. He walks 200 meters west and 125 meters north. How far is he from his starting point? Round to the nearest whole meter.
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04/01/20

Given cot u=2/5, 0<u<pi/2 and cos v = -3/5, pi<v<3pi/2, find tan(u+v)
When there is a given, how do you plug that in to find an answer?
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04/01/20

Stats Homework Questions
In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 57 and a standard deviation of 11. Using the... more
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04/01/20

Polynomial algebra
How do you solve this equation and how to get the answer?
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03/31/20

What are the coordinates of the point on the directed line segment from ( − 10 , − 3 ) (−10,−3) to ( 2 , − 3 ) (2,−3) that partitions the segment into a ratio of 5 to 3?
What are the coordinates of the point on the directed line segment from (−10,−3)(−10,−3) to (2,−3)(2,−3) that partitions the segment into a ratio of 5 to 3?
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03/31/20

trinomial algebra
How do you do this and how do solve it?Use the √x button to create a trinomial that has the following end behavior:
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03/31/20

z varies directly as x^2 and inversely as y^2. If z=106 when x=4 and y=4. find z if x =9 and y=8
z varies directly as x^2 and inversely as y^2. If z=106 when x=4 and y=4. find z if x =9 and y=8 (Round your number to the nearest hundredth)
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03/31/20

What is 1 3rd of 3 4ths?
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03/31/20

Kim is watching a fireworks display from an observation spot 5 miles away. Find the angle of elevation from Kim to the fireworks, which are at a height of 0.3 miles.
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03/31/20

Finding Maximum Area

What is the maximum area, in square feet, for the garden if 44 feet of fencing are used?
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03/31/20

test statistic question

claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69bpm. For a random sample of 165 adult​ males, the mean pulse rate is 70.1bpm and the standard deviation is 11.1bpm.... more
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03/31/20

how do you solve this?
   If cos65° = 0.4226, then sin25° =_____________. Explain the reasoning used to answer.  
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