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November 27, 2014

November 27, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

(x^-3y/x^2)^-3
*Wednesday, July 3, 2013 at 6:53pm*

**math**

Each game wheel is divided into equal sections. The spinners on the game wheels are each spun once and the number each spinner lands on is recorded. What is the probability that both numbers are odd numbers?
*Wednesday, July 3, 2013 at 5:58pm*

**math**

Solve the following system using the substitution method: 2x + 4y = 5 x = -2y + 6
*Wednesday, July 3, 2013 at 5:34pm*

**math**

Solve the following system using the substitution method: y = 3x - 9 y = -x - 1
*Wednesday, July 3, 2013 at 5:33pm*

**math**

Ginny Jones receives $650 gross salary biweekly. Her income tax rate is 15%. Her group health plan contribution is $24.50 per pay period. She belongs to the company retirement plan, to which she contributes 6.5% of her earnings. She is also covered under Social Security ...
*Wednesday, July 3, 2013 at 5:21pm*

**Math**

tom had 18 comic books , while Diane and Helen had none. Tom gave 1/3 of the comic books to Diane who passed 1/3 of these books along to Helen. If Tom then gave Helen 1/3 of the books he had left, how many comic books did Helen receive from Tom and Diane
*Wednesday, July 3, 2013 at 5:20pm*

**math**

Let f(x)=9x^2+6x-8, find f(-7)
*Wednesday, July 3, 2013 at 5:11pm*

**Math**

A seat to a musical costs $5.50. To that amount must be added a 6% entertainment tax. How much money must you receive in total to give a customer a ticket?
*Wednesday, July 3, 2013 at 5:10pm*

**math 111**

The overhead or fixed cost for the company is 1,000 per week. In addition, the cost of manufacturing each boat costs$200. Find an equation C=f(x) for the total cost per week where x is the number of boats manufactured in a week. b) Graph the total cost function for 0<x<30
*Wednesday, July 3, 2013 at 5:04pm*

**math**

Factorial notation problem. Please help? Hi, I am stuck on this maths problem. Solve for n: (n+2)!/(n)! =110. I get as far as (n+2)(n+1) = 110. When I multiply it out I get n^2,3n,2 = 110. There is only one example similar to this in my book and it used a quadratic equation to...
*Wednesday, July 3, 2013 at 4:33pm*

**math**

how do you do the following? 9/10 - ?= 17/30 and 3/10 + 4/5 = ? first time doing this . Thank you
*Wednesday, July 3, 2013 at 3:38pm*

**math**

f(x)=-7/x-9 What number must be excluded from the domain and why?
*Wednesday, July 3, 2013 at 3:30pm*

**math**

Ellen wishes to mix candy worth $1.64 per pound with candy worth $3.46 per pound to form 20 pounds of mixture worth $3.00 per pound. How many pounds of the more expensive candy should she use?
*Wednesday, July 3, 2013 at 2:39pm*

**math**

To determine the compound amount of an investment of $10,000 with an interest rate of 6% compounded monthly after 4 years requires you to use a table factor that goes beyond the Compound Interest Table. Calculate the new table factor for this investment
*Wednesday, July 3, 2013 at 2:16pm*

**math**

What would be the compound amount after 19 years on an investment of $42,000 with an 11% interest rate compounded annually
*Wednesday, July 3, 2013 at 2:07pm*

**math**

Plywood is sold in rectangle sheets 4 feet wide and 8 feet long. How many 4x8 sheets of plywood are needed to completely cover a rectangle shaped floor measuring 16 feet by 12 feet.
*Wednesday, July 3, 2013 at 12:42pm*

**trig, math**

Given triangle ABC with a = 16, b = 14, and β = 54°, find the value of c.
*Wednesday, July 3, 2013 at 11:09am*

**math**

A storage unit in the shape of a rectangular prism has a volume of 72 ft3. The area of the base of the unit is 18 ft2. What is the volume of a similar unit whose height is 8 ft?
*Wednesday, July 3, 2013 at 11:06am*

**math**

A storage unit in the shape of a rectangular prism has a volume of 72 ft3. The area of the base of the unit is 18 ft2. What is the volume of a similar unit whose height is 8 ft?
*Wednesday, July 3, 2013 at 11:06am*

**trig, math**

A 175-pound force and a 230-pound force are acting on the same point in directions that differ by 42°. What is the angle that the resultant makes with the 175-pound force?
*Wednesday, July 3, 2013 at 11:06am*

**math**

calculate the compound amount after 5 years for an investment of $7,700 at 6% interest compounded quarterly
*Wednesday, July 3, 2013 at 10:19am*

**math**

What is the present value of $73,000 in 11 years if the interest rate is 8% compounded semiannually
*Wednesday, July 3, 2013 at 9:39am*

**math**

Compute the amount of compound interest earned in 1 year for an investment of $1,000,000 with a nominal interest rate of 8% compounded quarterly
*Wednesday, July 3, 2013 at 9:36am*

**Math**

121/11(6+5)
*Wednesday, July 3, 2013 at 7:36am*

**math**

A kayaker paddles across a river at a constant speed of 4 miles per hour and a bearing of N 60 degrees E. Which current vector results in the kayaker's actual speed being 5.9 miles per hour and the kayakers actual direction being N 70 degrees E.
*Wednesday, July 3, 2013 at 2:20am*

**math**

what is the volume of a right rectangular prism has a square base with sides that are 4 meters in length. the height of the prism is 10 meters?
*Wednesday, July 3, 2013 at 12:30am*

**Business Math**

What is the annual percentage yield of a $10,000 investment for 1 year at 12% interest compounded monthly? (Round APY to the nearest hundredth.)
*Tuesday, July 2, 2013 at 10:18pm*

**business math**

What is the amount of compound interest for the investment in previous question
*Tuesday, July 2, 2013 at 10:03pm*

**math compound interestt**

calcualte the compound amount afterr 5 years for an investment of $7,700 at 6% interest compounded quarterly
*Tuesday, July 2, 2013 at 10:01pm*

**Math**

the function is h(t)= -4.9t^2+2t+45 (t represents time in seconds and h represents height in metres.) a) how tall is the building? b) how long does it take the balloon to fall on the sidewalk? c)determine the max height of balloon
*Tuesday, July 2, 2013 at 8:37pm*

**Math**

determine the range of each relation for the domain {-3,-2,-1,0,1,2,3} a) y=-3x+4 b)y=2x^2+5 c)y=1/x-4 d) y=-5(x+1)^2-4
*Tuesday, July 2, 2013 at 7:21pm*

**math**

15divided by 1 and 2 3rds
*Tuesday, July 2, 2013 at 6:12pm*

**Math**

An airplane traveled a distance d in t hours, where r>1, and arrived one hour late. The airplane would have arrived on time if it had traveled at what rate per hour? a. t-1 b. d/t-1 c. d/t+1 d. d/t-1 e. d/t+1
*Tuesday, July 2, 2013 at 4:55pm*

**math**

What is the largest integer less than 1000 that can be represented as a^3+b^3+c^3 for some integers a,b,c, such that a+b+c=0.
*Tuesday, July 2, 2013 at 12:58pm*

**math**

What percent of $9.00 is $0.64? To the nearest tenth = %
*Tuesday, July 2, 2013 at 12:49pm*

**math**

A family took a trip. They spent $90.71 for gasoline, $153.00 on meals, $197.00 on amusements, and $73.38 on miscellaneous expenses. How much did the trip cost? $
*Tuesday, July 2, 2013 at 12:46pm*

**Math**

A swimming pool is 0.6m deep, 1.8m, 2m long. A. What is the volume of the pool in cubic meters? B. How many liters of water can the pool hold? C. What is the weight of the water in kilograms?
*Tuesday, July 2, 2013 at 12:03pm*

**Math**

Showing all work convert 315m to dam
*Tuesday, July 2, 2013 at 12:00pm*

**Math**

If a man is 8 feet tall. How many meters is he?
*Tuesday, July 2, 2013 at 11:58am*

**math**

the temperature at 12 noon was 10 degree Celsius above 0.decrease at the rate of 2 degree Celsius per hour until midnight at what time would temperature be 8 degree Celsius below zero? what would be temperature at mid-night?
*Tuesday, July 2, 2013 at 11:47am*

**math**

i am a 4 digit decimal. the sum of my digits is divisible by 4. the square of my tenths equals my hundredths place. my thousandths is one less than my hundredths and equals to my ten thousandths. who am i?
*Tuesday, July 2, 2013 at 11:40am*

**Math**

The Chicago Art Museum's Renaissance display consists of four hallways bordered around a square courtyard. A single guard is assigned to patrol the four hallways. When the guard starts working, he begins in one of the corners and walks clockwise. When he arrives at a ...
*Tuesday, July 2, 2013 at 11:31am*

**Math**

Use the formula to solve the problems. B × In The amount that results when $6,000 is compounded at 7% annually over eight years=____ The interest earned in this case= ___
*Tuesday, July 2, 2013 at 11:14am*

**math**

give the GCF of each set of numbers and monomial 1. 16,60 2. 52,84
*Tuesday, July 2, 2013 at 10:33am*

**math **

Explain whether the following statement is true or false: “The ordered pair (1,5) is the same as the order pair (5,1).”
*Tuesday, July 2, 2013 at 5:38am*

**math**

15divided by 1 and 2 3rds
*Tuesday, July 2, 2013 at 1:35am*

**math**

To determine the compound amount of an investment of $10,000 with an interest rate of 6% compounded monthly after 4 years requires you to use a table factor that goes beyond the Compound Interest Table. Calculate the new table factor for this investment.
*Monday, July 1, 2013 at 10:55pm*

**math**

What would be the compound amount after 19 years on an investment of $42,000 with an 11% interest rate compounded annually?
*Monday, July 1, 2013 at 10:49pm*

**Contemporary math**

Using the Compound Interest Table, calculate the compound amount after 5 years for an investment of $7,700 at 6% interest compounded quarterly. My answer is $10,370.82 is this correct?
*Monday, July 1, 2013 at 10:42pm*

**Math 17**

What is the proof of theorem 2.23, where (b/a)+(d/c)=[(bc)+(ad)]/(ac). Thank you :)
*Monday, July 1, 2013 at 8:02pm*

**Math(work problem)**

A man can do the job in 8 days after 3 days of working a new guy help him and it takes 3 more days to finish the job together. how long will it take the new guy to finish the job alone?
*Monday, July 1, 2013 at 7:37pm*

**Math**

Each plant of a certain variety yields 50 seeds in the early fall and then dies. Only 40 percent of these seeds produce plants the following summer and the remainder never produce plants. At this rate, a single plant yielding seeds in 1986 will produce how many plants as ...
*Monday, July 1, 2013 at 6:35pm*

**Math**

If 1 more than a certain number is 3 less than a second number, the larger of these numbers minus the smaller is equal to?
*Monday, July 1, 2013 at 6:07pm*

**Math**

Oatmeal Recipe: Water 3/4 cup Salt: 1/4 teaspoon Oats: 1/3 cup If the least possible multiple of the recipe above is prepared so that a whole number of cups of both water and oats are used, how many teaspoons of salt would be required?
*Monday, July 1, 2013 at 6:03pm*

**Math**

a/6=-33
*Monday, July 1, 2013 at 5:36pm*

**Math**

Which fraction is equivalent to 5/6 * 1/3 ? 5/18 2/5 1 and 1/6 2 and 1/2
*Monday, July 1, 2013 at 5:24pm*

**math**

hasan ran 3 miles in 18.342 minutes. Safaya ran the same distance is 19.291 minutes. How much longer did it take safays to run 3 miles than hasan?
*Monday, July 1, 2013 at 5:16pm*

**math**

nisha is following a recipe for tomatoe sauce that calls for 1 3/4 tsps of oregano. she is using a measuring spoon that holds 1/8 tsp. how many times ill she need to fill the measuring spoon with oregano to make the tomato sauce? I thought it was multiplication, but I was wrong:(
*Monday, July 1, 2013 at 5:15pm*

**Math**

Which fraction is equivalent to 5/6 (divided sign) 1/3? 5/18 2/5 1and 1/6 2and1/2
*Monday, July 1, 2013 at 5:07pm*

**business math **

What would be the compound amount after 19 years on an investment of $42,000 with an 11% interest rate compounded annually?
*Monday, July 1, 2013 at 2:48pm*

**math**

Jessica has 1/3 of a bag of dog food to divide evenly between her 2 dogs. What fraction of the whole bag does Jessica give each of her dogs?
*Monday, July 1, 2013 at 2:44pm*

**trig, math**

Which of these functions has period 7? A)y= cot 7/pi x B)y= tan pi/7 x C)y= sin 7/pi x D)y= cos pi/7 x
*Monday, July 1, 2013 at 1:34pm*

**math**

How would I solve this; John is paid at an hourly rate of $15 and over time rate of 1.5 times his hourly rate. If john puts in w regular hours and y overtime hours in a week, what is his total wage for the week? (Monday-Friday
*Monday, July 1, 2013 at 1:12pm*

**math**

A newly-opened restaurant has 5 menu items. If the first 4 customers each choose one menu item uniformly at random, the probability that the 4th customer orders a previously unordered item is a/b, where a and b are relatively prime positive integers. What is a+b?
*Monday, July 1, 2013 at 12:53pm*

**Math**

Six people are playing Secret Santa for Christmas. They will each give one gift to someone, and each receive one gift from someone. They are not allowed to receive their own gift. How many different ways are there to exchange gifts?
*Monday, July 1, 2013 at 12:51pm*

**Math**

John has a box that contains one red ball and one blue ball. Every minute he reaches into the box and randomly takes out a ball from it (without looking). No matter which ball he took out, he puts it back together with another ball of the same color. Thus, after n minutes, the...
*Monday, July 1, 2013 at 12:30pm*

**Math (please help steve)**

The Chicago Art Museum's Renaissance display consists of four hallways bordered around a square courtyard. A single guard is assigned to patrol the four hallways. When the guard starts working, he begins in one of the corners and walks clockwise. When he arrives at a ...
*Monday, July 1, 2013 at 12:08pm*

**math**

1. Consider the following scenario: A random sample obtained from a population has a mean of µ=100 and a standard deviation of σ = 20. The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample men and...
*Monday, July 1, 2013 at 9:24am*

**math**

1. A sample of n=20 has a mean of M = 40. If the standard deviation is s=5, would a score of X= 55 be considered an extreme value? Why or why not?
*Monday, July 1, 2013 at 9:23am*

**Math**

222+999
*Monday, July 1, 2013 at 9:15am*

**Math**

my tenths is twice greater than my thousandths . My hundredths digit is the sum of my tenths and thousandths . Who am I?
*Monday, July 1, 2013 at 9:01am*

**compound interest math**

calculate the compound interest on an investment of $45,000 at 6% interest compounded quarterly fro 3 years
*Monday, July 1, 2013 at 6:46am*

**math**

calculate the compound interest on an investment of $18,000 at 8% interest compounded quarterly for 15 months.
*Monday, July 1, 2013 at 6:42am*

**math**

Manually calculate the compound interst on an investment of $12,500 at 7.5% interest compound semiannually for 2 year.
*Monday, July 1, 2013 at 6:40am*

**math compound interest**

rigoberto invests $8,000 at 6% interest comp semiannually for 1 year. Use the compound interest formula
*Monday, July 1, 2013 at 6:35am*

**MATH**

I don't understand this,so can you please explain more clearly. Where did you get the 1/5? 1.The point P divides the interval joining A(-1,-2) to B(9,3) internally in the ratio 4:1. Find the coordinates of P.
*Monday, July 1, 2013 at 1:23am*

**Math**

A particular bacterium is found to have a doubling time of 20 minutes. If a laboratory begins with a population of 300 of these bacteria, and there is no change in the growth rate, how many bacteria will be present in 55 minutes?
*Sunday, June 30, 2013 at 10:55pm*

**math**

Sams shoes makes a profit of 38$ on every pair of athletic shoes it sells. How many pairs of shoes must Sam sell to earn a profit of 950?
*Sunday, June 30, 2013 at 7:27pm*

**math**

x-5y=-21 9y-8x=44 substitution method
*Sunday, June 30, 2013 at 4:27pm*

**math**

the average middle distance runner at a local high school runs the mile in 4.5 minutes with a standard deviation of 0.3 minute the percentage of a runners that will run the mile in less than 4 min is %
*Sunday, June 30, 2013 at 4:03pm*

**College Math**

Brandywine Homecare, a not for hire business, had revenues of $12 million in 2011. Expenses other than depreciation totaled 75 percent of revenues, and depreciation expense was $1.5 million. All revenues were collected in cash during the yar and all expenses other than ...
*Sunday, June 30, 2013 at 3:21pm*

**MATH**

I don't understand this,so can you please explain more clearly. Where did you get the 1/5? 1.The point P divides the interval joining A(-1,-2) to B(9,3) internally in the ratio 4:1. Find the coordinates of P.
*Sunday, June 30, 2013 at 2:58pm*

**math**

Solve the mathematical puzzle. Determine the digits of F from these clues. The digits of F are all the same. The sum of all the digits of F is 12. The answer when any two of the digits are multiplied together is also 9. F is a four-digit number.
*Sunday, June 30, 2013 at 2:25pm*

**math **

Find the difference between the sum of 378 and 401 and the product of 43 and 17
*Sunday, June 30, 2013 at 1:41pm*

**Math (Combinatorics)**

In how many ways can I place 5 different beads on a bracelet if flipping or rotating the bracelet does not change the order of the beads?
*Sunday, June 30, 2013 at 1:20pm*

**Discrete Math**

A special type of password consists of four different letters of the alphabet, where each letter is used only once. How many different possible passwords are there?
*Sunday, June 30, 2013 at 6:42am*

**math**

what is the standard form of 7.5x10*8
*Sunday, June 30, 2013 at 5:49am*

**math**

a mixture of alcohol and water is 35% acid. if the mixture contains a total of 40L, How many liters of pure acid are in the mixture? how many liters of pure water are in the mixture?
*Saturday, June 29, 2013 at 10:36pm*

**math**

A client comes to you for investment advice on his $500,000 winnings from the lottery. He has been offered the following options by three different financial institutions and requests assistance to help understand which option would be the best for his investment. •...
*Saturday, June 29, 2013 at 10:13pm*

**math**

The student in Question 5 from Module 18 decides to conduct the same study using a within-participants design in order to control for differences in cognitive ability. He selects a random sample of participants and has them study different material of equal difficulty in both ...
*Saturday, June 29, 2013 at 7:38pm*

**math**

Find the critical value for the hypothesis test, given the following. (Give your answer correct to two decimal places.) Ha: ó1 > ó2, with n1 = 8, n2 = 10, and á = 0.025 F = 2.24 is what I got.
*Saturday, June 29, 2013 at 12:10pm*

**MATH**

A protected area was stocked with 1500 deer of a certain species in 1995. The deer population in 2010 was found to be 3350 deer. Let t be the number of years after 1195. Find the deer population at t=3
*Saturday, June 29, 2013 at 11:48am*

**Math 116**

Identify the solution (s) of the system of equations, if any. x=1 y=1 (A) no solutions (B) (0,0) (c) (1,1) (D) infinitely many solutions Identify the solution (s) of the system of equations, if any. 3x-2y=6 5x=5-25y (A) (28/13, 3/13) (B) (-3/17, 32/17) (C) (2/17,-3/17) (D) (32...
*Saturday, June 29, 2013 at 11:37am*

**math**

Consider the following ANOVA experiments. (Give your answers correct to two decimal places.) (a) Determine the critical region and critical value that are used in the classical approach for testing the null hypothesis Ho: ì1 = ì2 = ì3 = ì4 = ì...
*Saturday, June 29, 2013 at 11:23am*

**Math**

A 10-foot fence was set 2 5/6 foot into the ground. What is the exact length of the fence above ground?
*Saturday, June 29, 2013 at 10:41am*

**math 115a**

two points A and B 80 ft apart lie on the same side of a tower and in a horizontal line through its foot . If the angle of elevation of the top of the tower at A is 21 degrees and B is 46 degrees , find the height of the tower.
*Saturday, June 29, 2013 at 7:39am*

**math**

The traffic at 3 different road crossing change after 25 second, 36 second, 54 second, it they start change simantously at 9 am .how long it take for the process to repeat again?
*Saturday, June 29, 2013 at 3:37am*

**MATH**

1.The point P divides the interval joining A(-1,-2) to B(9,3) internally in the ratio 4:1. Find the coordinates of P. 2. Solve. 4-x/x<1 My answer: x>2
*Saturday, June 29, 2013 at 1:03am*

**math**

Sina+cosa=root over cosA
*Friday, June 28, 2013 at 11:35pm*

**math**

Sina+cosa=root over cosA
*Friday, June 28, 2013 at 11:34pm*

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