Algebra.Com New UNsolved Problems

UNsolved problem 151223 added to Travel_Word_Problems

Click on the link to solve this problem: les and gil drove a total of 733 miles in 11.6 hours. les drove the first part of the trip and averaged 55 mph. gil drove the remainder of the trip and averaged 65 mph. how long did les drive?

UNsolved problem 151222 added to Linear-systems

Click on the link to solve this problem: Need help in solving matrix [ 2 2 0] [ -10 ] -4-3 2 2 a= 0-3-5, B= -9 , AX=b

UNsolved problem 151221 added to Probability-and-statistics

Click on the link to solve this problem: I am trying to determine if I am going the right direction, more so than wanting someone just to answer the question. Here is the question; Define association in statistics. Explain how association is identified and demonstrated. My answer Association is a commonality between two variables demonstrated by a shared value. Association is often indentified mathematically by plotting variables on a graph, when variables share a point it can be said they are associated. Association can also be demonstrated through plotting. Real world association can be defined when two variables share a common factor. Such as January and snow, they are associated because they both occur during the same time of year but one does not cause the other. Am I heading the right way with this?

UNsolved problem 151220 added to Equations

Click on the link to solve this problem: By performing row of operations on augumented matrix, I am having a hard time trying to determine if these equations are independent, dependent, or inconsistent. x+y+z=11 x-y+3z=5 2x+2y+2z=15

UNsolved problem 151219 added to Miscellaneous_Word_Problems

Click on the link to solve this problem: A mounument is made in the form of a right pyramid with a regular hexagon as a base. Each base side is 5 m and the slant height is 30m. If the monument is to be covered by metal, how many square meters of metal are needed to cover the sides of the pyramid?

UNsolved problem 151217 added to Miscellaneous_Word_Problems

Click on the link to solve this problem: A surveyor has measured a distance b=20m between points A and C on a river bank, as shown in the Examination Figure. He wants to determine how far fromth e pint A is a point B on the other bank of the riber . By an instrument called a theodolite,he can measure the angles A and C in the triangle ABC. If the angle A = 25 degrees and the angle C=85 degrees what is the distance AB? Round your answer to one decimal place.

UNsolved problem 151215 added to Probability-and-statistics

Click on the link to solve this problem: One overnight case contains 2 bottles of aspirin and 3 bottles of thyroid tablets. A second tote bag contains 3 bottles of aspirin, 2 bottles of thyroid and 1 bottle of laxative tablets. If 1 bottle is taken at random from each piece of luggage, find the probability that a. both bottles contain thyroid tablets b. neither bottle contains thyroid tablets c. the 2 bottles contain different tablets

UNsolved problem 151211 added to Money_Word_Problems

Click on the link to solve this problem: 102. Diversification. Helen has 1/5 of her portfolio in U.S. stocks, 1/8 of her portfolio in European stocks, and 1/10 of her portfolio in Japanese stocks. The remainder is invested in municipal bonds. What fraction of her portfolio is invested in municipal bonds? What percent is invested in municipal bonds? (Be sure to write the fraction in correct form.) M = municipal bond fraction m = % municipal bonds

UNsolved problem 151205 added to Trigonometry-basics

Click on the link to solve this problem: sin(x+y)-2sinx+sin(x-y)/cos(x+y)-2cosx+cos(x-y)= tan x

UNsolved problem 151204 added to Sequences-and-series

Click on the link to solve this problem: In exercises 1-4, three of the five variables a1, an, r, n, and Sn are given. Find the two variables not given. 1. a1 = 10, r = 3, n = 5 2. a1 = 4, an = 324, r = 3 3. an = 24, r = , n = 4 4. Sn = 1022, r = 2, n = 9 5. A city has a population of 20,000 people in the year 2000. If the population increases 5% per year, what will the population be in 2010? ( You are not summing the population over 2000-2010. Find the population in the year 2010, use a1rn to solve.) 6. At the age of 21, Cyndi began receiving yearly payments from a trust fund. On each succeeding birthday, she received twice as much as in the preceding year. If she had received a total of $303,800 by age 25, how much did she receive at age 21?

UNsolved problem 151203 added to Graphs

Click on the link to solve this problem: sketch graph a) f(x) = 1 / (x-3) b)f(x)= 1/2(sin 2x +1) 0 <=x<=2pai

UNsolved problem 151202 added to Functions

Click on the link to solve this problem: what is domain of this a)2x b)2 / (x(x+3)squared 2)

UNsolved problem 151200 added to Equations

Click on the link to solve this problem: the number of flims (y) is a direct caration of the number of flams (x). a) write a general equation that summarizes the realationship. b) if theconstant of variation is 15, how many flims are produced by 3 flams?

UNsolved problem 151199 added to Equations

Click on the link to solve this problem: Give an example of a pair of inverse operations.

UNsolved problem 151198 added to Equations

Click on the link to solve this problem: according to the additoin property of equations, each side of an equation may have__________________.

UNsolved problem 151196 added to Equations

Click on the link to solve this problem: equivalent equations re defined to be______________________________.

UNsolved problem 151191 added to Miscellaneous_Word_Problems

Click on the link to solve this problem: 26.simplfy the expression -8+e^lnxcubed

UNsolved problem 151189 added to Miscellaneous_Word_Problems

Click on the link to solve this problem: 18. solve for x log5 5x=2

UNsolved problem 151188 added to Finance

Click on the link to solve this problem: Figure out the expected return for Proctor and Gamble if we can assume that the S&P 500 returns 11% on average using the stock's listed beta and the current risk-free rate.

UNsolved problem 151187 added to Finance

Click on the link to solve this problem: If the expected return is 13% based on the Capital Asset Pricing Model, the market risk premium is 6% and the Treasury bills are yielding 4%, what would the beta be?

UNsolved problem 151186 added to Miscellaneous_Word_Problems

Click on the link to solve this problem: 9. approximate the point of the intersection of the graphs og f and g. then solve the equation f(x)=g(x) algebraically. f(x)=log3x g(x)=0

UNsolved problem 151184 added to Numbers_Word_Problems

Click on the link to solve this problem: The airport parking lot charges different rates for different lengths of time. One hour in short term parking is $5.00; additional hours are $3.00. Any car parked longer than 24 hours is charged $10.00 an hour for any amount of time exceeding 1 day. How much would a person be charged for parking in short term parking for 32 hours?

UNsolved problem 151182 added to Travel_Word_Problems

Click on the link to solve this problem: Les and Gil drove a total of 733 miles in 11.6 hours. Les drove the first part of the trip and averaged 55 mph. Gilbert drove the remainder of the trip and averagerd 65 mph. How long did Les drive?

UNsolved problem 151181 added to Travel_Word_Problems

Click on the link to solve this problem: a motorboat can go 8 miles downstream in 20 minutes. It takes the same motorboat 30 minutes to go back upstream the same 8 miles. find the speed of the current.

UNsolved problem 151180 added to Travel_Word_Problems

Click on the link to solve this problem: Richard's average driving speed is 23 km per hour faster than Kirk's. In the same length of time it takes Richard to drive 651 km, Kirk drives on 490 km. What is Richard's average speed?