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1 solutions
Answer 309825 by edjones(7569)   on 2011-05-16 22:39:43 (Show Source):
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Functions/450453: The function, p(d)=1+d/33, gives the pressure, in atmospheres (atm) at a depth d in the sea ( d is in feet). Note that p(0)=1 atm, p(33)=2, and so on. find the pressure at 50 feet.
1 solutions
Answer 309824 by edjones(7569) on 2011-05-16 22:37:55 (Show Source):
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Probability-and-statistics/450400: For a fundraiser, a class sells 80 raffle tickets for a mall gift certificate and 120 raffle tickets for a brand new car. You buy 4 raffle tickets for the mall gift certificate and 8 raffle tickets for the new car. What is the probability that you win both pizes?
1 solutions
Answer 309820 by edjones(7569) on 2011-05-16 22:25:13 (Show Source):
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Probability-and-statistics/450402: Hey guys, can someone please explain this to me? Thanks in advance
When Jane throws a piece of paper in the bin, the probability the piece of paper lands in the bin is 0.6.
(a) What is the probability Jane misses the bin when throwing a piece of paper?
(b) If she throws 2 pieces of paper in succession, what is the probability they both miss the bin?
(c) If she throws 2 pieces of paper in succession, what is the probability that one lands in the bin and one misses the bin (in either order)?
1 solutions
Answer 309819 by edjones(7569) on 2011-05-16 22:20:55 (Show Source):
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Probability-and-statistics/450447: Say you are rolling 6 standard (6 sided) dice. How would you calculate the probability of rolling one, two, three... identical elements such as rolling 5 fives?
And if the question was changed so that you must meet more criteria such as rolling five 4s and a 3, how would the probability change?
Thanks for the help!
1 solutions
Answer 309818 by edjones(7569) on 2011-05-16 22:14:35 (Show Source):
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Rational-functions/450197: Column A
The value of x in the equation x-5 = 3x +7
Column B
the value of n in the equation 4n - 3 = 2(2n + 2) - 7
Pick A if the quantity in Column A is greater
Pick B if the quantity in Bolumn B is greater
Pick C if the two quantities are always equal
Pick D if the relationship cannot be determined from the information given.
1 solutions
Answer 309714 by edjones(7569) on 2011-05-16 17:02:34 (Show Source):
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Mixture_Word_Problems/450199: Theresa Morgan, a chemist, has a 25% hydrochloric acid solution and a 50% hydrochloric acid solution. How many liters of each should she mix to get 10 liters of a hydrochloric acid solution with a 40% acid concentration?
1 solutions
Answer 309711 by edjones(7569) on 2011-05-16 16:49:38 (Show Source):
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Probability-and-statistics/450194: there are two spinners. one is numbered from 1 to 8 and the other is numbered from 1 to 4. what is the probability that both spinners will land on the same number?
I thought that it should be 1/32, but wasn't sure.
1 solutions
Answer 309708 by edjones(7569) on 2011-05-16 16:37:13 (Show Source):
You can put this solution on YOUR website!Spin the 1 to four spinner first.
One of four numbers are spun.
Now spin the 2nd spinner. It has 1/8 chance of landing on the same number.
1/8 Answer.
.
Ed
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Permutations/450113: The numbers of absent days a student had in the last 5 months are {0,4,2,0,3}.
What is the approximate variance of this data?
my options are:
F 1.6
H 2.6
G 1.8
J 2.8
1 solutions
Answer 309683 by edjones(7569) on 2011-05-16 14:47:14 (Show Source):
You can put this solution on YOUR website!m=9/5=1.8
.
0-1.8=-1.8^2=3.24
4-1.8=2.2^2=4.84
2-1.8=0.2^2=.04
0-1.8=-1.8^2=3.24
3-1.8=1.2^2=1.44
===========>12.8
.
12.8/4=3.2 Variance
.
Ed
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Probability-and-statistics/450112: A deck of cards consists of five yellow cards numbered 1 to 5 and five green cards numbered 1 to 5. How many different six-card hands having four yellow cards and two green cards can be dealt.
1 solutions
Answer 309678 by edjones(7569) on 2011-05-16 14:30:00 (Show Source):
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Probability-and-statistics/449666: A machine is set to pump cleanser into a process at the rate of 10 gallons per minute. Upon inspection, it is
learned that the machine actually pumps cleanser at a rate described by the uniform distribution over the
interval 9.5 to 12.5 gallons per minute. Find the probability that between 10.0 gallons and 11.0 gallons are
pumped during a randomly selected minute.
The answer is 0.33, how do I arrive at that answer?
1 solutions
Answer 309331 by edjones(7569) on 2011-05-15 17:53:27 (Show Source):
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Rational-functions/449630: The denominator of a rational number is five more than the numerator.if three is added to both numerator and denominator the number becomes 1/2.Find the rational number.
1 solutions
Answer 309309 by edjones(7569) on 2011-05-15 16:01:42 (Show Source):
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Triangles/449651: I have an isoscles triangle with a base of 4ft and a height of 5 ft. How do I find the length of the other two sides?
Thanks
1 solutions
Answer 309305 by edjones(7569) on 2011-05-15 15:44:52 (Show Source):
You can put this solution on YOUR website!you have a 2 right triangles. The hypotenuse of either one is the side of the isosceles triangle.
b^2+a^2=c^2
2^2+5^2
=4+25
=29
c=sqrt(29)' length of one of the other sides of the isosceles triangle.
.
Ed
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Linear_Equations_And_Systems_Word_Problems/449648: Patient Appointments Some doctors use the formula ND= 1.08T to relate variables N (the number of patient appointments the doctor schedules in one day), D ( the duration of each patient appointment), and T (total number of minutes the doctor can use to see patients in one day).
a) Solve the formula for N.
b) Use this result to find the number of patient appointments N a doctor should make if she has 6 hours available for patients and each appointment is 15 minutes long. (Round the answer to the nearest whole number.)
Please help me, for I am completely lost with this question and with the step by step process.
Thank you
1 solutions
Answer 309300 by edjones(7569) on 2011-05-15 15:35:26 (Show Source):
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Probability-and-statistics/449588: 1. (3 points)
For a standard normal distribution (m = 0, ¿ = 1) find the probabilities:
a. z falling between -1.96 and +1.96
b. z falling above 1.64
c. Falling below -1.96
d. Falling above -1.96
2. (2 points)
The four general type of research design are secondary, experiment, observation and survey. Give one advantage and disadvantage of each.
3. (3 points)
What are the four ¿levels of measurement¿? Give an example of each explaining why the example fits the definition.
4. (2 points)
You have been awarded a grant to study ¿The effects of early intervention on reading ability of elementary school children struggling with reading.¿
Using at least three of the ¿descriptors of research design¿ describe how you would design the study.
(Two or three paragraphs will be sufficient --- this could be a 35 page report!)
1 solutions
Answer 309294 by edjones(7569) on 2011-05-15 15:22:52 (Show Source):
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Numbers_Word_Problems/449597: Find 3 consecutive multiples of 4 such that twice the sum of the last two numbers decreased by the second number is 4 less than 5 times the first number?
1 solutions
Answer 309292 by edjones(7569) on 2011-05-15 15:04:45 (Show Source):
You can put this solution on YOUR website!Let the multiples be 4x, 4(x+1) and 4(x+2)
2(4(x+1)+(4(x+2))-4(x+1)=5*4x-4
2(4x+4+4x+8)-4x-4=20x-4
8x+8+8x+16-4x-4=20x-4
12x+20=20x-4
8x=24
x=3
.
12,16 and 20 are the 3 multiples of 4.
.
Ed
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test/449601: Based on the example 4^2 = and (-4)^2, David reached the following conclusions: "The square of a number is always greater than the number." Is David correct? If yes, justify your answer. If no, provide a counterexample
1 solutions
Answer 309287 by edjones(7569) on 2011-05-15 14:42:38 (Show Source):
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