1,642 Answered Questions for the topic Math Help For College
03/27/15
Find the probabilities of the following events
events A and B of a sample space S, but assume that Pr[A′] = 0.4, Pr[B] = 0.55, and Pr[A′∩ B] = 0.2. Find the probabilities of the following events: (1) Pr[A∩B] = (2) Pr[A∪B] = (1) Pr[A′∪B]
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03/25/15
What is the probability that the second ball drawn is yellow?
Assume that the box contains 12 balls: 3 red, 4 blue, and 5 yellow. As in the text, you draw one ball, note its color, and if it is yellow replace it. If it is not yellow you do not replace it. You...
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03/25/15
What is the probability that the business makes a profit in exactly two of its first three years?
Assume that the business makes a profit with probability 0.2 in the first year. For each year thereafter, the business makes a profit with probability 0.7 if it made a profit in the previous year,...
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03/25/15
What is the probability that a randomly selected car has a CD player?
Assume that the fleet consists of 35 percent Lexus, 45 percent Infinity, and 20 percent Mercedes automobiles. 75 percent of the Lexus cars, 90 percent of the Infinities, and 40 percent of the...
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03/25/15
What is the probability that a randomly selected student plans to major in science?
Assume that 30 percent of students have taken calculus in high school. Of those who have taken calculus in high school, 65 percent plan to major in science. Of those who did not take calculus in...
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03/25/15
What is the probability that the second apple you pick is red?
nvolving the selection of two apples from a bag of red and yellow apples without replacement. Assume that the bag has a total of 10 apples: 6 red and 4 yellow.(1) What is the probability that the...
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Find the inverse, if possible
C=[1 0 0]
[-2 1 0]
[3 0 2]
1st row=? 2nd row=? 3rd row=?
Solve the system
y=3x+1
y=x^2+1
Type your answer as ordered pairs (x,y) with the order: from the smallest value of x to the largest
Find the inverse, if possible
A=[5 -4]
[-1 1]
(the brackets are actually suppose to be conjoined together)
1st row=? 2nd row=?
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Given the matrices... Find A times B
A=[-1 0]
[0 -2]
B=[1 -2]
[3 -1]
(the brackets in each A and B are actually suppose to be connected)
1st row=? 2nd row=?
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Math Help For College Math
03/24/15
Use Cramer's Rule to solve the system
x + 4y -3z = -8
3x - y + 3z = 12
x + y + 6z = 1
det A=? det Ax=? det Ay=? det Az=?
Math Help For College Math
03/24/15
Find the determinant
|1 -1 3|
|-1 2 -2|
|2 -2 4|
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Given the matrices...Find 2A-3B
A= [1 2]
[-1 0]
B=[-1 -3]
[4 1]
first row=?
second row=?
(the brackets for each A and B should be connected)
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03/24/15
Use Cramer's Rule to solve the system (write your answer in the lowest term)
x + 4y -3z = -8
3x - y + 3z = 12
x + y + 6z = 1
x=? y=? z=?
Find the inverse, if possible
A= [1 0 2]
[ -1 2 3]
[1 -1 0]
(the brackets should actually be connected together)
First row=? second row=? third row=?
Given the following matrices find E times F
E=[0 1] F=[1 2 0] [-1 2] [-1 -2 -1] [1 3](All of the brackets for each E and F should actually be conjoined)First row=? second row=? third row=?
Math Help For College
03/22/15
I need help with finding the polynomial with the lowest degree!
Question:
-Find polynomial with the lowest degree:
-Zeros: 1, 3i,1+squareroot of 2, 1-i
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03/22/15
Abdul drove to the mountains last weekend...
Abdul drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took hours. When Abdul drove home, there was no traffic and the trip only took hours. If his...
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Math Help For College
03/22/15
a wheel of radius 3m rolls at 17 rads/s. how fast is a point on the rim of wheel rising when the point is pi/3 radians above the horizontal(and rising)?
A wheel with radius 3m rolls at 17 rads/s. How fast is a point on the rim of wheel rising when the point is pi/3 radians above the horizontal (and rising)?
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03/21/15
tuition for a resident at a college campus was $8730 in 2008. The tuition increased by 15.1%... MATH WORD PROBLEM HELP
tuition for a resident at a college campus was $8730 in 2008. The tuition increased by 15.1% during the period from 2008 to 2013. Find the increase and the tuition for the 2013-14 school...
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Math Help For College
03/15/15
How many jeans should be produced each day in order to minimize coasts? What is the daily cost?
A manufacturer of a brand A jeans has daily production costs of C=0.2x^2-96x+12,105, where C is the total cost(in dollars) and x is the number of jeans produced. How many jeans should be produced...
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Math Help For College
03/07/15
Math word problems
Type in only your numerical answer to the following problem; do not type any words or letters with your answer. Two types of tickets are sold for a concert. Adult tickets cost $12 each, while...
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03/07/15
How many of these are less than 5000?
In this version, you are to form a 4-digit number from the digits 1, 2, 3, 4, 7, 8, and 9, using each at most once.
How many of these are less than 5000?
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03/07/15
What is the value of w2?
For this problem, assume that 2, 6, 5, and 4 are equally likely, a 1 is three times as likely as a 4, and a 3 is four times as likely as a 1. (1) What is the value of w2? (2) What is the value of...
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