1,642 Answered Questions for the topic Math Help For College
04/06/15
solve by the elimination method
3r-5s=14
5r+3s=46
determine the solution of the system. select the correct choice below and, if necessary, fill in the answer box to complete your choice.
a) _ (type an ordered pair)
b)...
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04/06/15
Solve the system of equation by graphing.
x+y=8
7x+7y=56
Determine the solution of the system of equations. Select the correct choice below
A). The solution is ___. (Type an ordered pair.)
B). The infinitely many solutions.
C)....
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04/06/15
solve by the substitution method
r-9s=0
9r-3s=390
what is the solution of the system. _ (type an ordered pair)
When will they lose contact?
A truck and a car leave a service station at the same time and travel in the same direction. The truck travels at 60 mph and the at 54 mph. they can maintain radio conact within range of 12 miles....
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04/06/15
solve the following system of equations using the substitution method
x=y+7
2x+y=5
the solution is. _ (type an ordered pair)
solve by elimination method
8x-y=67
x+7y=44
determine the solution of the system. select the correct choice below and, if necessary, fill in the answer box to complete your choice.
a) _ (type ordered pair)
b) there...
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04/03/15
Please help me solve this word problem that involves interest compounded continuously and how long it will take for an investment to double
If an account pays 3.5% interest compounded continuously, how long it will take for an investment to double? (Round your answer to the whole number).Hint. You can choose the amount of the investment.
04/02/15
What is the probability of selecting 1 mouse of each gender given that both are grey?
For this problem, assume there are 5 grey females, 2 grey males, 4 white females, and 5 white males. As in the book, the biologist selects two mice randomly.(1) What is the probability of selecting...
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04/02/15
What is the probability that exactly one blue ball is chosen?
Assume that you have 5 red balls and 6 blue balls from which randomly to select two without replacement.(1) What is the probability that exactly one blue ball is chosen? (2) What is the probability...
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04/02/15
What is the probability of neither being red given that neither is blue?
For this problem, assume the box contains 3 red balls, 5 blue balls, and 8 white balls, and that we choose two balls at random from the box.What is the probability of neither being red given that...
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04/02/15
What is the probability of selecting 1 mouse of each gender given that both are grey?
For this problem, assume there are 5 grey females, 2 grey males, 4 white females, and 5 white males. As in the book, the biologist selects two mice randomly.
(1) What is the probability of...
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04/01/15
What is the probability that both balls are red given that the first ball you drew was red?
Assume that each bag contains 5 balls. Bag a contains 4 red and 1 white, while bag b contains 1 red, 1 white, and 3 blue. You randomly select one ball from bag a, note the color, and place the ball...
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04/01/15
What is the probability that exactly one blue ball is chosen?
Assume that you have 6 red balls and 7 blue balls from which randomly to select two without replacement.(1) What is the probability that exactly one blue ball is chosen? (2) What is the probability...
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04/01/15
What is the probability that the subcommittee consists of 2 men and 1 woman, given that it contains both men and women?
For this problem, assume that the committee contains 10 men and 5 women and that three are selected at random for a subcommittee.What is the probability that the subcommittee consists of 2 men and...
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03/31/15
Compute the following conditional probabilities:
events E and F in a sample space S, but assume that Pr[E] = 0.45, Pr[F] = 0.45, and Pr[E∩ F] = 0.25. Compute the following conditional probabilities: (1) Pr[E | F] = (2) Pr[F | E] =
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03/30/15
Please hurry! help me solve this word problem that involves compounded continuously and doubling
If an account pays 3.5% interest compounded continuously, how long it will take for an investment to double? (Round your answer to the whole number).Hint. You can choose the amount of the investment.
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03/30/15
Find the inverse matrix (if it exists)
[1 -1 1]
[0 -1 0]
[0 0 2]
(the brackets are all suppose to be combined)
Answer: first row=?
second row=?
third row=?
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03/30/15
(1) What is Pr[E | F]? (2) What is Pr[F | E]?
Suppose for this problem that Pr[E] = [ 1/12], Pr[F] = [ 1/6], and Pr[E ∩F′] = [ 0/1].(1) What is Pr[E | F]? (2) What is Pr[F | E]?
03/30/15
What is Pr[F | E]?
Suppose for this problem that Pr[E] = [ 5/8] and Pr[F] = [ 3/4]. Just as in the book, Pr[(E ∪F)′] = 0. (1) What is Pr[E | F]? (2) What is Pr[F | E]?
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03/29/15
What is Pr[E | F]?
Suppose for this problem that Pr[E] = [ 5/8] and Pr[F] = [ 3/4]. Just as in the book, Pr[(E ∪F)′] = 0. (1) What is Pr[E | F]? (2) What is Pr[F | E]?
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03/29/15
Compute the following conditional probabilities:
A and B in a sample space S, but assume that Pr[A] = 0.4, Pr[B] = 0.35, and Pr[A∩ B] = 0.1. Compute the following conditional probabilities: (1) Pr[A | B] = (2) Pr[B | A] =
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03/28/15
An experiment consists of drawing 1 card from a standard 52-card deck. What is the probability of drawing the 5 of diamonds?
An experiment consists of drawing 1 card from a standard 52-card deck. What is the probability of drawing the 5 of diamonds?
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03/27/15
Find the following probabilities
events A and B in a sample space S. Assume that Pr[A] = 0.45, Pr[B] = 0.55, and Pr[A′∩B] = 0.4. Find the following probabilities:(1) Pr[B′∩A] = (2) Pr[A∩B] = (3) Pr[A′∩B′] =
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03/27/15
Assume that Pr[A] = 0.4, Pr[B] = 0.7, and Pr[A nB] = 0.3.
events A and B in a sample space S. Assume that Pr[A] = 0.4, Pr[B] = 0.7, and Pr[A ∩B] = 0.3.(1) Pr[B′∩A] = (2) Pr[A′∩B] = (3) Pr[A′∩B′] =
03/27/15
What is the probability that the student attends at least one class on Monday?
involving a student's attendance at math and accounting classes on Mondays. Assume that the student attends math class with probability 0.65, skips accounting class with probability 0.4, and...
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