06/10/15

Maths questions On Trigonometry and functions....
If 0≤α≤π and 0≤β≤π meets α+β=2/3π and sin α=2sinβ,the value of tan(α-β)=...A.1B.square root 2C.2-(square root 3)D.square root 3E.2+(square root 3)A function f(x)=4x^3-18x^2+15x-20 is maximum on... more
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06/09/15

factoring trinomials
How do I factor a trinomial where the coefficient is greater than one? why are they more difficult?
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06/09/15

Independent Probability
A card is picked from a pack of 52 playing cards. Let F be the event of selecting a black card and let G be that of selecting a face card. Are F and G independent events? (Enter your probabilities... more
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06/09/15

Probability
Consider a sample space S=(e1, e2, e3, e4) with P(e1)=2P(e3), P(e2,e3)=3P(e1) and P(e4)=3P(e3). Find P(e1), P(e2), P(e3), and P(e4).  
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06/09/15

what is the total distance they travel downstream and upstream in terms of d?
Eric and abbott motor downstream at about 6 knots( nautical miles per hour) in their boat. The return trip is against the current and they can motor at only 3 knots.   a.Eric want to find the... more
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06/09/15

Find the inverse of the function. What information can you obtain from the inverse function?
A function for converting x millimeters to y inches is y=.039737x. Find the inverse of the function. What information can you obtain from the inverse function? Us the inverse function to find the... more
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06/09/15

1. Sarah has two and three-quarters yards of cloth. She used one-fourth of it to make doll clothes. How much cloth did she use to make clothes for the doll?
For the following problems, do the following:(a) Determine the mathematical operation needed to solve the problem.(b) Convert the word problem to symbolic language.(c) Solve the problem using... more
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06/08/15

Sonic boom trig question
The US Air Force was running maneuvers with the F22 Raptor, flying low enough so that you could see the shock cone created as the jet flies overhead at supersonic speeds. You wanted to take a video... more
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06/08/15

(a) Find the diameter of the second tablet so that its surface area is equal to that of the first tablet. (b) Findthe volume if each tablet in terms of pi.
The rate at which a tablet of vitamin c begins to dissolve depends on the surface area of the tablet. One brand of tablet I 2 centimeters long and is in the shape of a cylinder with hemispheres of... more
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06/08/15

Young equestrian left at 10:00 am riding 10 miles per hour on her horse. Father left at noon traveling 15 miles per hour, how many hours untill he catches up?
 A young equestrian loved to ride her horse all day dreaming of getting into the Kentucky Derby. One morning she left her house at 10:00 am traveling 10 miles per hour on her horse. At noon her... more
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06/08/15

rectangular steel plates 290 cm114 cm plates are marked line along each side, 2 cm from edge. Rivet hole drilled 8 cm apart.
AP Fabrications produce rectangular steel plates which measure 290 cm by 114 cm. The plates are markedwith a line along each side, 2 cm in from the edge. Rivet holes are then drilled 8 cm apart... more
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06/08/15

Math help Pls..
1.Nine apples are randomly taken from a set of 4 red apples,5 green apples and 6 yellow apples.How many possibilities that 2 apples from all colours and minimum 4 yellow apples are... more
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06/07/15

75 employees total, 25 per store, what are the chances the 3 lowest performance scores would be 1 employee from each store?
3 stores. 25 employees each. All 75 employees ranked from highest to lowest with some employees having equal ratings. What are the chances that the 3 lowest ranked employees would be one... more
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06/07/15

When will the infected population equal the uninfected population?
The spread of a virus can be modeled by exponential growth, but its growth is limited by the number of individuals that can be infected. For such situations the function, P(t)=Kpe^rt/K+p(ert+1),... more
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06/04/15

stats help
Kellogg’s marketing department conducts an experiment to find out whether consumers can distinguish between its various brands of breakfast cereal. Five very small bowls of different brands of... more
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06/03/15

a college provides its employees with a choice of two medical plans
A college provides its employees with a choice of the two medical plans shown below. For what size hospital bills is plan 2 better for the employee than plan 1.   Plan 1 the employee pays $100... more
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06/02/15

Whats  the probability that a student chosen at random received an A on both the final exam and the final project ?
60% of the students in Mr. MacGregor’s class did not earn a As on their final projects. 7% of the students who received As on their final projects also received As on their final exams.   
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06/02/15

What is the probability that a particular set of three songs contains one male singer, one female singer, and one instrumental?
A Dallas-area radio station plays songs from a specific, fixed set of artists. The station has no DJ; instead, a computer randomly selects which songs to play. The songs themselves are picked... more
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06/02/15

How much water must be added to 20 ounces of a 15% solution of argyrol to reduce it to a solution that is 10% argyrol
What is the answer to the problem
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06/02/15

Probablity word problem
A florist is creating a bouquets put of red, yellow, and white roses. If there are five red roses, 4 yellow roses and eight whight roses how many different arrangements can be made using two of... more
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06/02/15

Spinner spun 1 to 15 three separate times. What are the odds the spinner lands on a number greater than three times in a row?
A spinner is spun that has 15 equal-sized sections numbered to 1 to 15 three separate times. What are the odds the spinner lands on a number greater than five three times in a row
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06/02/15

a bag contains slips numbered 1-9. independent or dependent event?, find the probability of selecting 2 even numbers when 2 slips are chosen without replacement
help please 
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06/02/15

Find the number of permutations of the letters in the word Honolulu if vowels and consonants must be kept together
I honestly don't understand questions like this. I get the main concept of permutations, but then when I see a question like this, my brain just freezes. Are there any steps I can go through for... more
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06/02/15

The value of Lead Time
A CIF processess approximately 100 Soldiers per day. The value-add time for a Soldier is 30 minutes. This process is conducted over an 8 hour day.  What is the lead time for any given Soldier to be... more
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06/01/15

Generate a formula for an Octagonal figurative number
 Generate a formula for the nth Octagonal number by relating to one or more figurate numbers with fewer than seven sides(by relating to hexagonal, pentagonal, square, oblong or triangular numbers).
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