Monday

December 29, 2014

December 29, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

the perimeter of a rectangle is 56 m. the width of the rectangle is 4 m less than the length. find the length and width of the rectangle
*Tuesday, December 9, 2014 at 4:51am*

**math**

simplest form of the ratio of rs20 to 50ps
*Tuesday, December 9, 2014 at 3:39am*

**math(5th grade)**

Gino wants to travel from home to school. Find how many routes are possible if he does not travel in a northerly direction.
*Tuesday, December 9, 2014 at 2:33am*

**Basic Statistics**

The math grades on the final exam varied greatly. Using the scores below, how many scores were within one standard deviation of the mean? How many scores were within two standard deviations of the mean? 99 34 86 57 73 85 91 93 46 96 88 79 68 85 89
*Tuesday, December 9, 2014 at 1:07am*

**Math**

g(x) = (1-x)(4+6x) / (5x^2+4) Horizontal asymptote y = ?
*Tuesday, December 9, 2014 at 12:14am*

**Math (Word Problem into formula)**

A chemist is studying the properties of a bronze alloy (mixture) of copper and tin. She begins with 6 kg of an alloy that is one sixth tin. Keeping the amount of copper constant, she adds small amounts of tin to the alloy. Letting x be the total amount of tin added, define c(x...
*Monday, December 8, 2014 at 11:53pm*

**Math**

How many 3 digit numbers can you find whose digits have a sum of 4. 112 211 103 301 310 013 031 202 220 022 400
*Monday, December 8, 2014 at 11:26pm*

**Math**

f(x) = (9-8x) / (10x-9) f^-1(x) =
*Monday, December 8, 2014 at 11:25pm*

**Math **

A cook has 2 2/3 cups of flour. A recipe calls for 2 3/4 cups of flour. Does the cook have enough flour? If not, how much more flour is needed?
*Monday, December 8, 2014 at 11:15pm*

**Math**

Limit(7x+6x^2) / (7x^2+6x) x->inf
*Monday, December 8, 2014 at 11:06pm*

**Math**

What is log x + log x + log x = 3? I want to say 3000 since 10^3=1000, then three times makes 3000.
*Monday, December 8, 2014 at 10:48pm*

**math**

An experiment consists of drawing one ball from a box containing 5 white balls numbered 1 through 5 and black balls numbered 6 through 10. Find the probability that a randomly selected ball is black and numbered 7.
*Monday, December 8, 2014 at 10:40pm*

**Math **

On a map 1/4 inch represents 20 miles the distance between two cities on the map is 3 3/4 inches how many miles apart are in the two cities?
*Monday, December 8, 2014 at 10:14pm*

**Math**

the math problem is 8 3/5 divided by 1 2/3 =5 4/25 how do you answer with bar models
*Monday, December 8, 2014 at 10:10pm*

**Math (Simplifying Fraction)**

(x^-1+4x^-2)/(1-16x^-2)
*Monday, December 8, 2014 at 9:59pm*

**math**

Teacher divided the kids into groups of 3, each students did 9 photos a piece which equals 585 photos in all. How many Students were in each group
*Monday, December 8, 2014 at 9:54pm*

**Math**

(6/x^2+5x+6) + (9/x+3) express answer in reduced form What i attempted is to factor out the bottom half of the first fraction to 6/(x+2)(x+3) the second half i'm guessing would be to multiply each side by the x+3? making it a (6x+18/(x+2)(x+3)) + 9 or would i write it as 6...
*Monday, December 8, 2014 at 9:53pm*

**math**

It is a 4-digit number The tens are double the ones. The thousands are double the tens. The sum of the digits is 19. What number is it?
*Monday, December 8, 2014 at 9:40pm*

**math**

The rental fee for a van is $40 per day plus .08 per mile. Jan has $150. How far can she drive and stay in her budget
*Monday, December 8, 2014 at 9:39pm*

**Math**

Simplify (x-(1/x))/(1-(1/x)) I don't get how to do this, can someone please help me? :)
*Monday, December 8, 2014 at 9:32pm*

**math**

find the value of x: 25=(748/7)p0werX
*Monday, December 8, 2014 at 9:15pm*

**Math**

What is 995.8755 rounded to the nearest whole dollar
*Monday, December 8, 2014 at 9:14pm*

**Math.**

Can you guys help me? -18/81 in lowest term? 5/12 in lowest term? 16/24 in lowst term? 25/55x .. simplify ?
*Monday, December 8, 2014 at 9:06pm*

**math**

What is the maturity value of a loan for $39,995 at 2.49% for 60 months? Please show work
*Monday, December 8, 2014 at 8:52pm*

**math**

A scale drawing of your classroom is 4 inches by 6 inches. If one inch represents 8 feet, what is the actual size of your classroom? I think I know the answer, jst having trouble figuring out how to write it down & show it. I think it's 32 feet by 48 feet. Help! Thanks
*Monday, December 8, 2014 at 8:29pm*

**math**

there are 13 more girls than boys on the playground. there are 22 boys. how many girls are on the playground
*Monday, December 8, 2014 at 7:56pm*

**Math**

The scale of the map is missing. The actual distance from Liberty to West Quall is 72 miles, and it is 6 inches on the map. What is the scale of the map?
*Monday, December 8, 2014 at 7:56pm*

**Math **

On an airplane, there are two seats on the left side in each row and three seats on the right side. There are 90 seats on the right side of the plane. How many seats are on the left side of the plane? How many seats are there altogether?
*Monday, December 8, 2014 at 7:54pm*

**math**

12 3/4 feet long by 11 1/2 feet wide is how many square feet
*Monday, December 8, 2014 at 7:53pm*

**Math**

A machine can produce 27 inches of ribbon every 3 minutes. How many feet of ribbon can the machine make in one hour? Explain.
*Monday, December 8, 2014 at 7:51pm*

**Math Help**

1. 77 is what percent of 192? A. x/100=77/192;4.01%**** B. x/100=77/192;40.1% C. x/77=100/192;77.3% D. x/100=192/77;249.4% 2.Of the 80 eigth-graders, 32 are going on the class retreat. What percnt of the eigth grade going on the retreat? A. 25% B. 55% C. 40% D. 32%*** 3. ...
*Monday, December 8, 2014 at 7:48pm*

**Math**

Carrie and Krystal are taking a road trip from Greenville and North Valley . On Carries's map, Greenville and North Valley are 4.5 inches apart. The scale is 1 inch=20 miles. How far is Greenville from North Valley? The scale on Kystal's map is 1=18 miles. How far ...
*Monday, December 8, 2014 at 7:47pm*

**Math Help**

Tom buys a shirt for $22.00 plus 7% sales tax. His cousin buys a shirt for $18.00 plus 4% sales tax. a. How much do Tom and his cousin pay for the shirts? Show your work b. Who spent more on tax My answers $22.00*7%=1.54 $22.00+1.54=$23.54 $18.00*4%=0.72 $18.00+0.72=$18.72 Tom...
*Monday, December 8, 2014 at 7:37pm*

**Math**

marble | number ——————1;— Blue. |. 8 Red. |. 4 Purple. |. 6 Use the table to write the ratio. 1. Purple: marbles 2 marbles to blue
*Monday, December 8, 2014 at 7:33pm*

**Math**

How to find x intercept
*Monday, December 8, 2014 at 7:19pm*

**Math Help**

Forks:Spoons There are 7 forks and 5 spoons. What's the ratio? Explain what the ratio means. I know what the ratio is its 7:5 right? I just need help on the second one. How do I explain it?
*Monday, December 8, 2014 at 7:11pm*

**Math**

Find x and y intercepts of y=sinx-cos^2x on [0, 2pi]
*Monday, December 8, 2014 at 7:05pm*

**math**

what x 12 is close to 57 12 divided by 5.79 = That is what I am trying to figure out so i skipped 5 and move on to 57 in the problem and i need to know what x 12 = close to 57
*Monday, December 8, 2014 at 6:59pm*

**5th grade math**

Q. The Johnson family has been very busy and has not done there laundry for several weeks. The dirty laundry pile consists 540 items of clothing. They figure they can put average of 27 pieces of clothing in a single load. How many loads if laundry will the Johnson family have ...
*Monday, December 8, 2014 at 6:57pm*

**Math (Answer ASAP)**

Find the right value for arcsin (-1/2).
*Monday, December 8, 2014 at 6:53pm*

**math**

Let S be the part of the sphere x^2 + y^2 + z^2 = 25 that lies above the plane z = 4. Let S have constant density k. (a) Find the center of mass. (b) Find the moment of inertia about the z-axis. so far I have found that the magnitude of r(theta)x r(thi)= 25sin(thi)but I cant ...
*Monday, December 8, 2014 at 6:50pm*

**math**

Let S be the part of the sphere x^2 + y^2 + z^2 = 25 that lies above the plane z = 4. Let S have constant density k. (a) Find the center of mass. (b) Find the moment of inertia about the z-axis.
*Monday, December 8, 2014 at 6:45pm*

**Math**

Y=2sinx-cosx on [0, 2pi] Find x- and y-intercepts
*Monday, December 8, 2014 at 6:40pm*

**Math Help**

The population of town A increases from 1,346 to 1,500. In the same period, the population of town B increases from 1,546 to 1,800. a. Find the percent of increase in population for town A and for town B. b. Which town had the greater percent of increase? My answer town A. 1,...
*Monday, December 8, 2014 at 6:28pm*

**Math**

explain base 10
*Monday, December 8, 2014 at 6:22pm*

**Math Help**

1.Of the 80 eith-graders, 32 are going on the class retreat. What percent of the eith grade going on the retreat? A. 25% B. 55%*** C. 40% D. 32% 2.What is the sale price for a pair of shows that was originally prices at $54.99 and now is 20% off? A. $38.49 B. $41.24 C. $43.99...
*Monday, December 8, 2014 at 6:00pm*

**Math**

Tara's car travels about 25 miles on one gallon of gas. She has between 10 and 12 gallons of gas in the tank. List the independent and dependent quantities
*Monday, December 8, 2014 at 5:49pm*

**Math Help**

1.The Census Bureau estimates that in 2025, 20 of 50 states will have a Spanish-speaking majority. What percent of the states will have a Spanish-speaking majority? A. 20% B. 30% C. 40%*** D. 50% 2. What percent of 25 is 10? A. 10=p*25;40% B. 10=p*25;250% C. 25=p*10;40% D. 25=...
*Monday, December 8, 2014 at 5:47pm*

**Math**

How to find Domain and Range of parallelogram
*Monday, December 8, 2014 at 5:42pm*

**Math Help**

1.Liam wants to buy a bicycle that costs $290.00. His parents say Liam must raise 40% of the money himself. How much money must Liam raise? A. $112.00 B. $40.00 C. $116.00*** D. $87.00 2.Solve the proportion using cross products 29 miles/58 hours=10 miles/ h hours A. 10 B. 20...
*Monday, December 8, 2014 at 5:31pm*

**Math Help**

1.Write the fraction 8/9 as a percent. Round to the nearest hundereth of a percent where necessary. A. 88.89%*** B. 1.13% C. 44.44% D. 66.67% 2.Write the decimal 0.237 as a percent. A. 0.237% B. 2.37% C. 23.7%*** D. 237% 3.Jerry sold 7/20 of the total number of tickets that ...
*Monday, December 8, 2014 at 5:17pm*

**Math**

Tennis racket marked up 50% to $36.75
*Monday, December 8, 2014 at 5:11pm*

**Math**

Andre says that 5 3/4 +2 1/4=7 because 7 4/8=71/2 what is his mistake ?
*Monday, December 8, 2014 at 5:01pm*

**Math**

A punch recipe says to mix 4 cups of pineapple juice, 8 cups of orange juice, and 12 cups seltzer in order to make 18 servings of punch. How many cups of each ingredient do you need to make 108 cups of punch? ----- cups of pineapple juice ----- cups orange juice - ----- cups ...
*Monday, December 8, 2014 at 4:49pm*

**math- weighted averages**

Santa tasted 500 ml of a 60% solution of eggnog. How many milliliters of a 30% eggnog solution should be added to obtain a 50% solution?
*Monday, December 8, 2014 at 4:46pm*

**Math**

It took sandy two hours to jog 13 miles.she ran 7/12 miles in the first hour how far did she run during the second hour
*Monday, December 8, 2014 at 4:41pm*

**Math**

How do I find the scale of a map?
*Monday, December 8, 2014 at 4:41pm*

**Math**

The LCD for the fractions 1/3, 3/4, 5/32, and 8/9 is
*Monday, December 8, 2014 at 4:12pm*

**Math**

At the tournament, team A scored 192.586 points. Team B scored 170.399 points. How many more points did team A score than team B?
*Monday, December 8, 2014 at 4:03pm*

**Math**

Write an algebraic expression for the following: Five more than the quotient of a number and 2
*Monday, December 8, 2014 at 3:52pm*

**Math**

What is the value of the expression? 63-6^2 divided by 2
*Monday, December 8, 2014 at 3:50pm*

**square feet math**

If the lenght is 14 ft. and the area is 70sq. ft.what is the width?
*Monday, December 8, 2014 at 3:36pm*

**12 Math**

Evaluate each logarithm. log^2(subscript)36^3
*Monday, December 8, 2014 at 3:17pm*

**Math**

Which of the following equations has an infinite number of solutions? 3x - 3 = -4x 2y + 4 - y = 16 7x + 5 = 4x + 5 + 3x 6y - 2 = 2y - 1
*Monday, December 8, 2014 at 1:54pm*

**math**

Evaluate 2/(1+J4)^2 I got as far as: (1+j4)^2=(1+j4)(1+j4)=1+j4+j4+j4^2=1+J24 OR (1+j4)^2 (/2) =(0.25+j)(0.25+j)=0.0625+j+j+j^2 =0.0625+j+j-0.0625=J^2 I think it can be take further. but im not sure i'm right.
*Monday, December 8, 2014 at 1:38pm*

**math**

A, B, C and D each had some money. D doubled the amounts with the others. C then doubled the amounts with others. B then doubled the amounts with the others. A then doubled the amounts with the others. At this stage, each of them has $80. Find the initial amount with C. Help ...
*Monday, December 8, 2014 at 1:26pm*

**Math**

How would I simplify this quadratic equation: y=-15/20.25(x^2+3x+2.25)+0 This is my work already done the original equation I was given but I need help simplifying the equation I have found.
*Monday, December 8, 2014 at 12:20pm*

**Math**

When fully simplified, ignoring non-permissible values, 12x^12/4x^3 divided by x^8/24x^6? a)72x^3 b)1/72x^7 c)1/72x^3 d)72x^7
*Monday, December 8, 2014 at 12:18pm*

**MATH**

A facility has a curent salary budget of $750,000 with a planned salary increase for the next year of 3.5%. Inflation will impact the expense budget by 5%. WHAT WILL BE THE SALARY BUDGET FOR NEXT YEAR?
*Monday, December 8, 2014 at 12:12pm*

**math**

A fair 6 sided dice is marked with the numbers 1, 2, 3, 4,5, and 6. The dice is rolled three times and the results are added. How many different sums are possible?
*Monday, December 8, 2014 at 11:38am*

**math**

What is the approximate cost of florring for a 40ft by 40ft meeting room if half of the room will be carpet at $25 per square yard and other half will be VCT at $2.50 per square foot?
*Monday, December 8, 2014 at 11:12am*

**math**

A total of $8000 is invested: part at 8% and the remainder at 12% . How much is invested at each rate if the annual interest is $650 ?
*Monday, December 8, 2014 at 11:07am*

**BUSINESS MATH**

: The Crescent Corporation just paid a dividend of $2 per share and is expected to continue paying the same amount each year for the next 4 years. If you have a required rate of return of 13%, plan to hold the stock for 4 years, and are confident that it will sell for $30 at ...
*Monday, December 8, 2014 at 11:03am*

**BUSINESS MATH**

Moore Company is about to issue a bond with semiannual coupon payments, a coupon rate of 8%, and par value of $1,000. The yield-to-maturity for this bond is 10%.
*Monday, December 8, 2014 at 10:52am*

**BUSINESS MATH**

Part B: The Crescent Corporation just paid a dividend of $2 per share and is expected to continue paying the same amount each year for the next 4 years. If you have a required rate of return of 13%, plan to hold the stock for 4 years, and are confident that it will sell for $...
*Monday, December 8, 2014 at 10:49am*

**BUSINESS MATH**

The Crescent Corporation just paid a dividend of $2 per share and is expected to continue paying the same amount each year for the next 4 years. If you have a required rate of return of 13%, plan to hold the stock for 4 years, and are confident that it will sell for $30 at the...
*Monday, December 8, 2014 at 10:47am*

**Math**

y=4-2x^2+1/6x^4 How to find x and y-intercepts. I think y=0 but I don't know how to solve for the x-intercept.
*Monday, December 8, 2014 at 10:36am*

**Math**

Find the exact value: 1.) cos^-1(sin(pi/2)) 2.) arccos(cos(7pi/2))
*Monday, December 8, 2014 at 8:03am*

**Algebra **

I need help with my math pizzazz worksheet page 167 1.3x-5y=13 X-2y=5 2.7x-2y=-1 3x-4y=19 3.2x+3y=7 3x+4y=10
*Monday, December 8, 2014 at 6:36am*

**math**

John and Smith went to a stationery shop. John bought 6 pens, 4 pencils and 3 erasers. Smith bought 3 pens, 8 pencils and 6 erasers and spent 20% more than John. What percentage money did John spend on pens? How can I form an equation and solve?
*Monday, December 8, 2014 at 6:34am*

**math**

The sum of two numbers is 4 and the reciprocal of one exceeds the reciprocal of other by twice the product of their reciprocals. What is the product of the reciprocals of two numbers? Please help me solving.
*Monday, December 8, 2014 at 2:41am*

**Math (TRIG)**

Please help me set up these problems. 1.) Find an equivalent equation in rectangular coordinates. r(1 - 2 cos θ) = 1 2.) Find a rectangular equation for the plane curve defined by the parametric equations. x = sec t, y = tan 3.) A projectile is fired with an initial ...
*Monday, December 8, 2014 at 1:01am*

**Trig (math)**

1.) Find all solutions of the equation. Leave answers in trigonometric form. x^2 + 1 - sqrt3i = 0 2.) Give the rectangular coordinates for the point. (9, 2pi/3) 3.) The rectangular coordinates of a point are given. Express the point in polar coordinates with r L 0 and 0° K...
*Monday, December 8, 2014 at 12:21am*

**math**

Francis is baking cookies. The recipe for chocolate chip cookies calls for 2 2/3 cups of flour, the recipe for peanut butter coolies calls for 2.75 cups, the recipe for ginger snaps calls for 5/2 cups. If francis wants to use as little flour as possible, which cookie whould he...
*Monday, December 8, 2014 at 12:03am*

**math**

An animal shelter has 24 large cages and 42 small cages that need to be cleaned. The director of the shelter wants to divide the work so that each person cleans the same number of large cages and the same number of small cages. What is the largest number of people he can use ...
*Monday, December 8, 2014 at 12:00am*

**Trig (math)**

1.) Write the complex number in trigonometric form r(cos theta + i sin theta) with theta in the interval [0°, 360°). 9 sqrt 3 + 9i 2.) Find the product. Write the product in rectangular form, using exact values. [4 cis 30°] [5 cis 120°] 3.) [4(cos 135° + i ...
*Sunday, December 7, 2014 at 11:23pm*

**Math**

The Empire Carpet Company orders merchandise for $14,486, including $475 in shipping charges, from Mohawk Carpet Mills on May 4. Carpets valued at $1,453 will be returned because they are damaged. The terms of sale are 2/10, n/30 ROG. The shipment arrives on May 26, and Empire...
*Sunday, December 7, 2014 at 10:50pm*

**math**

Compute Mary's estimated tax payment for the first quarter. She is self-employed and she expects to earn $61,440 this year. Her estimated income tax rate is 22%. For self-employed persons, social security tax is 12.4% of wages up to $106,800, and Medicare tax is 2.9% of ...
*Sunday, December 7, 2014 at 10:47pm*

**Math**

An object is dropped from a balloon from a height of 500m. (a) How long does it take to reach the ground? (b) If the object has an initial velocity of 12m/s, how long does it take to reach the ground? How far will it fall in 5 secnds?
*Sunday, December 7, 2014 at 10:23pm*

**Math**

Jeremy has 19 coins of 2 different values. The total value of the coins is $1.00. What are the coins? How many of each coin does he have? Explain please
*Sunday, December 7, 2014 at 10:23pm*

**Math**

The sum of the squares of three consecutive whole numbers is 77. Form a quadratic equation and hence solve it to determine the numbers. (Hint: let the three consecutive numbers be x, x+1 and x+2)
*Sunday, December 7, 2014 at 10:03pm*

**Math**

A ladder 10 ft long leans against a wall. The bottom of the ladder is 6 ft from the wall. How much would the lower end of the ladder have to be pulled away so that the top end would be pulled down by 3 ft?
*Sunday, December 7, 2014 at 10:00pm*

**math**

Two trains are on the same track a distance 100 km apart heading towards one another, each at a speed of 50 km/h. A fly starting out at the front of one train, flies towards the other at a speed of 75 km/h. Upon reaching the other train, the fly turns around and continues ...
*Sunday, December 7, 2014 at 9:00pm*

**Math**

For a savings account paying 2.4% in which interest is compounded MONTHLY. FIND THE Time needed to double the initial investment of 10000 dollars. The answer is 28.9 years but WHY
*Sunday, December 7, 2014 at 8:54pm*

**math**

The radioactive isotope sodium-24 is used as a tracer to measure the rate of flow in an artery or vein. The half life of sodium-24 is 14.9 hours.Suppose that a hospital buys a sample of sodium-24 a. how much of the sample will remain AFTER 48 Hours? b. How long will it be ...
*Sunday, December 7, 2014 at 8:10pm*

**MATH**

SOLVE FOR X THANK U LIFESAVERS Solve for x Log(x-6) +Log(x+3)=1
*Sunday, December 7, 2014 at 8:07pm*

**math 211(linear algebra)**

uppose that the sequence x0, x1, x2... is defined by x0 = 4, x1 = 2, and xk+2 = 4xk+1+5xk for k≥0. Find a general formula for xk. Be sure to include parentheses where necessary, e.g. to distinguish 1/(2k) from 1/2k. .
*Sunday, December 7, 2014 at 6:55pm*

**Math - Differentiate **

I just need an explanation of hoe to solve the following: f(x)= ln (x^3 + 5)+ 6x
*Sunday, December 7, 2014 at 6:34pm*

**Math**

A bottle rocket travels along a parabolic path and reaches a maximum height of 21 feet after traveling a horizontal distance of 7 feet. A) Write a quadratic function of the form y=a(x-h)^2 +k that models the bottle rocket's path, assuming it leaves the ground at the point...
*Sunday, December 7, 2014 at 4:16pm*

**math**

3x+10=1
*Sunday, December 7, 2014 at 3:58pm*

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