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November 23, 2014

November 23, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math**

1/3 divided by 2
*Monday, October 13, 2014 at 6:02pm*

**Math**

-2 divided by one half -4?
*Monday, October 13, 2014 at 6:01pm*

**Math**

What is the direct variation function? Is it y/x=k?
*Monday, October 13, 2014 at 5:57pm*

**Math**

3^-2/n and 7ab^-2/3w .
*Monday, October 13, 2014 at 5:57pm*

**Math**

A right pyramid has a surface area of 258 cm2. A right cone has a base radius of 4 cm. The cone and pyramid have equal surface areas. What is the height of the cone to the nearest tenth of a centimetre?
*Monday, October 13, 2014 at 5:57pm*

**math**

average cost for traning is $200 per hour per person 60 person is employs and scheduled for 25hours per year. how much would it cost
*Monday, October 13, 2014 at 5:41pm*

**Math**

If point A is located at (9, -2), which of the following points would be located 9 units away from point A? A. (9,-7) B. (1,-2) C. (9,-11) D. (9,-9) I believe this would be C (9,-11) would I be right? Thanks for the help.
*Monday, October 13, 2014 at 5:34pm*

**math**

the normal work load of the members of an operation, maintenance and repair group is forty hours per week. it employs 75 persons. and each is scheduled for two weeks vacation per year. what is the total amount of time worked by this group in a year?
*Monday, October 13, 2014 at 5:26pm*

**math**

Need help on this problem. The mass of a proton is about 1.7 x 10^-24g. The mass of a neutron is about the same as a proton. The nucleus of an atom of carbon has 6 protons and 6 neutrons. The mass of the nucleus is about 2 x 10^-26 units. what is the best choice for the units ...
*Monday, October 13, 2014 at 5:09pm*

**Math**

6 hundred 2 tens = 5 hundreds ? Tens
*Monday, October 13, 2014 at 5:08pm*

**math**

write a real word problem and equation using t eaqul 5
*Monday, October 13, 2014 at 4:54pm*

**math**

a cell phone company charges $10 per month, for up to 500 text messages, and $.15 for each additional text messages. Stanley was charged $14.50 last month for text messages. Write an equation to find the number of text messages over 500 he sent and received last month
*Monday, October 13, 2014 at 4:45pm*

**math**

1/2X+3=9 solve for x. I'm confused
*Monday, October 13, 2014 at 4:23pm*

**2 STEP MATH EQUATIONS**

eric has a dog walking business. He charges $13per dog he walks and $6 for the water he buys for the dogs. If he made $97 on Monday, write an equation to find the number of dogs he walked on Monday. I got an answer of 7 dogs on Monday. Then, in addition to dog walking, on ...
*Monday, October 13, 2014 at 4:20pm*

**8th Grade Math**

Please help! Which statement is false? A. The number zero is a rational number. B. Some irrational numbers are also rational numbers. C. Every irrational number is a real number. D. Every integer is a rational number. I thinks its D. Please help!
*Monday, October 13, 2014 at 4:03pm*

**math**

You are given a pair of equations, one representing a supply curve and the other representing a demand curve, where p is the unit price for x items. 80 p + x - 380 = 0 and 84 p - x - 40 = 0 a. Identify which is the supply curve and demand curve and the appropriate domain. Put ...
*Monday, October 13, 2014 at 3:54pm*

**Math**

For each object, its surface area, and some dimensions are given. Calculate the dimension indicated by the variable to the nearest tenth of a unit. a) right cone SA=7012mm^2 GIVEN=diameter of 48mm b) right square pyramid SA=65.5m^2 GIVEN=length of 3.5m
*Monday, October 13, 2014 at 3:25pm*

**Math**

An urn contains 3 red, 4 orange, and 6 yellow marbles. 2 marbles are selected without replacement. Find the probability that the second marble selected is orange given that the first marble selected is yellow.
*Monday, October 13, 2014 at 2:35pm*

**Business Math**

Molly Ellen, bookkeeper for Keystone Company, forgot to send in the payroll taxes due on April 15. She sent in the payment on November 8, The IRS sent her a penalty charge of 6.00% simple interest on the unpaid taxes of $1000. Calculate the penalty. (Remember that the ...
*Monday, October 13, 2014 at 1:48pm*

**math**

brenda is planning her birthday party.she wants to have 10.92 liters of punch,6.5 gallons of icecream,3.9 pounds of fudge,and 25 guests at the birthday party
*Monday, October 13, 2014 at 1:41pm*

**Math**

A simplified version of the expression 2sinθ (cos θ)(cotθ) is
*Monday, October 13, 2014 at 12:50pm*

**Math**

Radiation from the Sunkeeps us all alive, but with the thinning of the ozone layer, it is important to limitexposure. The intensity of radiation is inverselyproportional to the square of the distance thatthe Sun’s rays travel.The formula I=k/d^2 models the ...
*Monday, October 13, 2014 at 12:08pm*

**chemistry/math**

5.0 moles of solid sodium chloride (NaCl) are used to prepare a 5.0 M NaCl solution. What is the volume of the solution?
*Monday, October 13, 2014 at 12:06pm*

**Math**

Rewrite the expression 2sinθ(cosθ)(cotθ) in terms of sine or cosine.
*Monday, October 13, 2014 at 11:59am*

**Math**

Starting with the formula mg sin A = umg cos A, you can derive tan A = u to find the angle A of an incline and the coefficient of friction u of objects on the incline.
*Monday, October 13, 2014 at 11:56am*

**Math**

1) An aerobics class is being offered at the ABC body gym. Nonmembers pay $4 per class while member pay a monthly fee of $10 plus $2 per class. a. Create a linear system to represent the two options. b. At how many classes will the cost be the same? What is that cost? c. When ...
*Monday, October 13, 2014 at 11:26am*

**Math**

Alan is using the equation mg sin A = umg cos A to determine the coefficient of friction, u, between a flat rock and a metal ramp. Find u to the nearest hundredth, if the rock begins to slide at 19º.
*Monday, October 13, 2014 at 10:49am*

**math**

a telephone pole is supported by two cables attached to points on the pole 15 ft above ground and to points on the level ground 8 ft from the foot of the pole. what is the total length of the two cables
*Monday, October 13, 2014 at 10:36am*

**Math**

2)Jenny wants to buy a new car, and she has narrowed her choices to two models. Model A sells for $12,500, gets 25mi/gal, and costs $300 a year for insurance Model B sells for $16,100, gets 36 mi/gal, and costs $400 a year for insurance. Jenny drives about 36,000 miles a year...
*Monday, October 13, 2014 at 2:09am*

**Math**

3) While traveling for vacation, you have decided to divide your lodging between a resort, and a regular stay hotel. Let x represent the number of nights you will spend in a resort, and let y represent the number of nights you will spend in a regular stay hotel. a. Write a ...
*Monday, October 13, 2014 at 2:08am*

**College Math**

5) A landscaper wants to make a small planter and surround it with edging material for a client. She is deciding between two designs. Design 1: A square planter Design 2: A circular planter Edging material costs $4 per ft. for the straight variety which she would use for ...
*Monday, October 13, 2014 at 2:08am*

**MATH 101**

Factor: 15x2(2x + 3) + 41x(2x + 3) + 28(2x + 3)
*Monday, October 13, 2014 at 1:56am*

**MATH 101**

Factor: 1200+1640t+280t^2
*Monday, October 13, 2014 at 1:56am*

**math**

a rectangular vegetable bed 10m long and 6m wide is edged on four sides with 2m wide border. find the area of the border
*Monday, October 13, 2014 at 1:38am*

**Math Statistics**

Answer the following. Show your work to get credit. Exam scores are normally distributed with a mean of 81 and a standard deviation of 9. a) What is the minimum score one must have to be in the top 4% of the students taking the exam? b) What percentage of scores are below 90? ...
*Monday, October 13, 2014 at 1:31am*

**MATH 101**

Factor completely. Be sure to factor out the greatest common factor first if it is other than 1. (If the polynomial is prime, enter PRIME.) 56a^2+39ab-27b^2
*Monday, October 13, 2014 at 1:24am*

**Math**

Micheal gave 1/12 of his money to Sally and 1/5 of his remaining money to Heidi. If he still had $704, how much money did he have originally? The answer is $960 I was told to take the fraction of what was left and multiply it by what Heidi took: 1/12 + (11/12 x 1/5) = 11/60 11...
*Monday, October 13, 2014 at 1:03am*

**Math**

Every item in the Just a Dollar store is priced at $1.00. When Mary Jo opens the store, there is $122.00 in the cash register. When she counts the money in the cash register at the end of the day, the total is $1,065.95. If the sales tax rate is 8.5%, how many items were sold ...
*Monday, October 13, 2014 at 12:37am*

**Math**

If the product of 4 consecutive integers is equal to one of the integers, what is the largest possible value of one of the integers? The answer is 3, but I do not understand how it is 3. I tried writing out 4 consecutive #'s such as 1,2,3,4 or 0,1,2,3. 0 x 1 x 2 x 3 = 0
*Monday, October 13, 2014 at 12:28am*

**Statistics**

A researcher measures the following scores for a group of people. The X variable is the number of errors on a math test, and the Y variable is the person’s level of satisfaction with his/her performance. (a) With such ratio scores, what should the researcher conclude ...
*Monday, October 13, 2014 at 12:19am*

**Math-Urgent help please.**

Two cards are selected, without replacing the first card, from a standard deck. Find the probability of selecting an ace (A), and then selecting a 4 (B): (choose 2) 0.603% 0.592 0.592% They are dependent events. 0.00592
*Monday, October 13, 2014 at 12:02am*

**Finance math**

9. Compute the present value of $4,000 paid in five years using the following discount rates: 10 percent in year 1, 2 percent in year 2, 12 percent in year 3, and 9 percent in years 4 and 5.
*Sunday, October 12, 2014 at 11:52pm*

**Math**

A store selling art supplies finds that they can sell x sketch pads each week at a price of p dollars each, according to the formula x = 2100 - 300p. What price should they charge if they want to sell at least 600 pads each week? (First use the formula to write an inequality ...
*Sunday, October 12, 2014 at 11:28pm*

**Math**

If 8% of c is equal to 12% of d, which of the following is equal to c + d? a)1.5d b)2d c)2.5d d)3d e)5d I tried replacing the variables with numbers to make it easier. I came up with 8% of 600 = 12% of 400, both equal 48. And then 600 + 400 = 1000 but thats not one of the ...
*Sunday, October 12, 2014 at 10:04pm*

**math**

Tina and Bruce are each rolling a 1 to 6 number cube. They are looking for different ways to roll two factors whose product is greater than 14. How many different ways will they find? Product means to multiply so 4x5, 3x5,6x5,. I chose 1 to 6 SO I have three times.
*Sunday, October 12, 2014 at 9:12pm*

**3rd grade math**

Where did i find word problems specially for number rounding, I also need the methods and answers, because teacher marked compleatly wrong, for what i taught to kid. Can any body help please
*Sunday, October 12, 2014 at 8:58pm*

**Math**

Is this correct -18+43= 75
*Sunday, October 12, 2014 at 7:54pm*

**Math**

How can you check the answer to a decimal multiplication problem?
*Sunday, October 12, 2014 at 7:30pm*

**math**

in 1933 wiley post flew around teh world in 7 DAYS 18 HOURS. WILEYS TRIP WOULD BEST BE DESCRIBED AS FLYING AROUND THE ? OF TEH EARTH.
*Sunday, October 12, 2014 at 7:08pm*

**math**

Selena and her friends went out to dinner. The bill came to $56.25. If the the tax rate is 7.5 percent and they left a 15 percent tip. How much money did they spend at the restaurant ?
*Sunday, October 12, 2014 at 7:06pm*

**Math**

Please help me on this one! ABCD x 9 ----- DCBA What is A,B,C,and D?
*Sunday, October 12, 2014 at 7:01pm*

**math**

Selena and her friends went out to dinner. The bill came to $56.25. If the the tax rate is 7.5 percent and they left a 15 percent tip. How much money did they spend at the restaurant ?
*Sunday, October 12, 2014 at 5:52pm*

**Math**

A number and its absolute value are equal. If you subtract 2 from the number, the new number and its absolute value are not equal. What do you know about this number? What is a possible number that satisfies these conditions?
*Sunday, October 12, 2014 at 3:52pm*

**math**

the scale used to make a model of a car is 1:18. the length of the model is 91/2 inches. how many feet long is the actual car.
*Sunday, October 12, 2014 at 2:17pm*

**Math**

A photocopier copies 80 pages in 4 minutes. How much time will he take to copy 200 pages? Can someone pleas explain how to do it.
*Sunday, October 12, 2014 at 11:56am*

**math**

where will the hand of a clock stop if it,start at 4 and makes half revolution ?
*Sunday, October 12, 2014 at 10:32am*

**Math**

Solve this in Long Division. (x-6)/(10x^4-50x^3-800)
*Sunday, October 12, 2014 at 10:16am*

**Math **

A rancher with 750ft of fencing wants to enclose a large rectangle area and then divide it into four equal-sized pens to hold animals. If the maximum area is desired to ensure humane treatment of the anima, what should be the dimensions of the larger rectangle. What should be ...
*Sunday, October 12, 2014 at 12:55am*

**math**

I have a 2x4 that's 8'long,how manyn 1 and 1/2 foot boards can I cut out of it?
*Saturday, October 11, 2014 at 10:36pm*

**math**

how to write 700+3000+40000+12+80 in standard form
*Saturday, October 11, 2014 at 10:18pm*

**Math help**

Order the number from least to greatest -44, -8 1/2, 0, 6.2, -12, -6.4, 14, 7, -6
*Saturday, October 11, 2014 at 8:54pm*

**Math College (Algebra)**

How to solve this system? x + [(3x-y)/(x^2+y^2)] = 3 y - [(x+3y)/(x^2+y^2)] = 0
*Saturday, October 11, 2014 at 7:19pm*

**Math**

If you invested $500 in an account that pays 12 % a compounded weekly, how long would it take for your deposit to triple?
*Saturday, October 11, 2014 at 4:23pm*

**math**

How many times do you need to multiply 6.5066 by ten to get 650.66?
*Saturday, October 11, 2014 at 3:46pm*

**Math**

The area, a of a rectangle whos length is twice its width, w is described by the equation, a=(w)(2w)=2w^2
*Saturday, October 11, 2014 at 12:04pm*

**math**

how much greater is the volume of a cube whose edge is 5 inches than the volume of a cube whose edge is 4 inches?
*Saturday, October 11, 2014 at 11:49am*

**math**

in a isosceles triangle if two equal sides are 3.5 meter each.how long is third side?
*Saturday, October 11, 2014 at 10:34am*

**Math (Algebraic Proving)**

Show that the equation sqrt((x-c)^2 + y^2)+sqrt((x+c)^2 + y^2) = 2a can be simplified to (x^2/a^2) + (y^2/b^2) = 1 where b^2 = a^2-c^2.
*Saturday, October 11, 2014 at 9:38am*

**math**

Find the percent markup based on selling price, if the percent markup based on the cost is 14%. (Round to the nearest tenth percent.)
*Saturday, October 11, 2014 at 9:36am*

**Math (Word Problem)**

An open gift box is to be made from a square piece of material by cutting four-centimeter squares from the corners and turning up the sides. The volume of the finished box is to be 576 cubic centimeters. How to find the size of the original piece of material?
*Saturday, October 11, 2014 at 9:29am*

**math**

20 LB for $27.50; 12 LB for X dollars. Find x. Can you make it a decimal?
*Saturday, October 11, 2014 at 8:28am*

**math**

tam75/2
*Saturday, October 11, 2014 at 8:07am*

**Math**

Every employee's salary at the Sunrise Software Company increases each year by 1/10 of that person's salary the previous year. A: If Martha's present annual salary is $100,000.00, what will her salary be in 2 years? B: If Aaron's present salary is $99,000.00, ...
*Saturday, October 11, 2014 at 7:31am*

**another math equation**

a b 2 - =- =-, find ab 4 5 3 i'm gonna need supporting onthis
*Saturday, October 11, 2014 at 7:19am*

**math equation**

a b - = - = 3, Find a + b 4 5
*Saturday, October 11, 2014 at 7:18am*

**Math help**

Noah says that dividing a number by 2 is the same as multiplying it by 1/2. He wants to know if he is right, and if so, why? How do you respond?
*Saturday, October 11, 2014 at 2:27am*

**Math**

Solve for x ln(x+1)/ ln(x-1) = 2
*Friday, October 10, 2014 at 11:35pm*

**MATH (PROBABILITY) **

According to Nielsen Media Research, approximately 52% of all U.S. households have digital cable television. In addition, 84% of all U.S. households have multiple TV sets. Suppose 45% of all U.S. households have digital cable television and have multiple TV sets. A U.S. ...
*Friday, October 10, 2014 at 11:15pm*

**Quantitative Reasoning (math)**

A round silo is 60 ft tall and has a 15 ft radius. About high would a load of 32,000 cubed feet fill the silo to? Do I start with pie*radius squared?
*Friday, October 10, 2014 at 11:03pm*

**Math - Business Stats. PLS HELP!**

help pls!!! thank u in advance, i appreciate it greatly Alex, Alicia, and Juan fill orders in a fast-food restaurant. Alex incorrectly fills 20% of the orders he takes. Alicia incorrectly fills 12% of the orders she takes. Juan incorrectly fills 5% of the orders he takes. Alex...
*Friday, October 10, 2014 at 10:42pm*

**Math**

Log sqrt x^2+1=1/5 Find x
*Friday, October 10, 2014 at 10:32pm*

**Math, Help Please IF you can**

Chapter 6, Section 6.1, Question 036 The function g(x) is obtained by shifting the graph of y=x^2 If g(3) = 25 (a) g is the result of applying only a horizontal shift to y=x^2 g(x) = (b) g is the result of applying only a vertical shift to y=x^2 g(x) = g left-parenthesis x ...
*Friday, October 10, 2014 at 9:46pm*

**math**

ratio plese : (1 + 3 1/4) : (1 1/4 + 3 1/3) plese teach me how to do it
*Friday, October 10, 2014 at 9:05pm*

**Math**

f(x) = x^3 y1 = -x^3 + 4 b) Graph the function obtained from f by first translating up 4 units, then reflecting about the x-axis. Write a formula for the resulting function, y2. y2 = ? i tried x^3-4. my value wasn't correct
*Friday, October 10, 2014 at 8:36pm*

**math**

There were 60 pumpkins in a pumpkin patch but it was difficult for farmer Joe to find a perfect pumpkin.
*Friday, October 10, 2014 at 8:00pm*

**Math**

Write a formula y = m(n – 1.2) of m(n) = n2/2. would it be 1/2m(n-1.2)^?
*Friday, October 10, 2014 at 7:56pm*

**math**

Verify the given linear approximation at a = 0. Then determine the values of x for which the linear approximation is accurate to within 0.1. (Enter your answer using interval notation. Round your answers to three decimal places.) 1/(1 + 2x)^5 ≈ 1 − 10x
*Friday, October 10, 2014 at 7:54pm*

**Math**

The domain of g(x) is -1< x < 9 What is the domain of g(x - 4) I know the Domain: ?< x <? i know the graph shifts left by four. But I do not remember how to find the domain to be honest.
*Friday, October 10, 2014 at 7:52pm*

**word problem math b**

Anna and Julia each take a bicycle trip. Anna rides 20 km 1 1/3 hours. Julia rides 100 meters in 10 minutes. Which rider has the slower unit rate?
*Friday, October 10, 2014 at 7:35pm*

**Business Math**

Andres Michael bought a new boat. He took out a loan for $23,980 at 3.75% interest for 4 years. He made a $4,470 partial payment at 4 months and another partial payment of $3,180 at 9 months. How much is due at maturity?
*Friday, October 10, 2014 at 7:17pm*

**Math**

What is the product of (5.1*10^3)*3.2*10^3)? (Please express your answer in scientific notation.) A. 16.32*10^6 B. 1.632*10^7 C. 16.32*10^9 D.1.632*10^10 Is the answer B?
*Friday, October 10, 2014 at 7:10pm*

**Math! Please check!**

Okay, this is the link but without the spacing:::: h t t p : / / t a k e e x a m . n e x t . e c o l l e g e . c o m / e c / c o u r s e s /4 6 1 2 2 / C R S - M T H 2 0 3 A- 3 9 5 0 2 5 8 / G M T _ Q 1 1 _ 2 . b m p What is point P in triangle XYZ called? A- centroid B- ...
*Friday, October 10, 2014 at 6:04pm*

**Math**

Just like square roots are the inverse of squaring, cube roots are...
*Friday, October 10, 2014 at 5:59pm*

**business math**

Andres Michael bought a new boat. He took out a loan for $23,980 at 3.75% interest for 4 years. He made a $4,470 partial payment at 4 months and another partial payment of $3,180 at 9 months. How much is due at maturity?
*Friday, October 10, 2014 at 5:51pm*

**Math Physics**

A wattmeter shows that a motor is drawing 2200w. What horsepower is being delivered? Is this correct? 2200/746 = 2.95
*Friday, October 10, 2014 at 5:50pm*

**math help**

(1+3 1/4) : (1 1/4 + 3 1/3) Simplify as a ratio?
*Friday, October 10, 2014 at 5:35pm*

**math**

I am a 2 digit number whose digits are different if you add my digits the answer is 9 the difference between the digits is 3 my units digit is half my 10 digit
*Friday, October 10, 2014 at 3:52pm*

**math 11**

25,000 compounded for four years at a rate of 3.3%???
*Friday, October 10, 2014 at 3:09pm*

**math**

Consider an equilateral triangle with points located at each vertex and at each midpoint of a side. (See picture.) This problem uses the set of numbers {1, 2, 3, 4, 5, 6}. Place one number at each point. Call the sum of the three numbers along any one side (two vertices and ...
*Friday, October 10, 2014 at 2:51pm*

**Math help 1 question!!!!!!!!**

14. Which statement is true? A. Every rational number is a square root. B. Every irrational number is a fraction. C. Every rational number can be written as a fraction. D. Every square root can be written as a whole number.
*Friday, October 10, 2014 at 2:17pm*

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