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January 25, 2015

January 25, 2015

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math-algebra**

the length of a rectangle is 4 times of its width.the perimeter of the rectangle is 150cm. find the linear equations?
*Wednesday, December 10, 2014 at 4:46am*

**math-algebra**

the length of a rectangle is 4 times of its width.the perimeter of the rectangle if 150m
*Wednesday, December 10, 2014 at 4:42am*

**math**

Three-Step-Problem...A punch recipe says to mix 4 cups pineapple juice, 8 cups orange juice, and 12 cups seltzer in order to make 18 servings of punch. a)How many cups of each ingredient do you need to make 108 cups of punch? b)How many servings can be made from 108 cups of ...
*Wednesday, December 10, 2014 at 1:36am*

**Math**

What are the comparisons between the mixed numbers 5.815 and 6.021
*Wednesday, December 10, 2014 at 12:21am*

**math**

How do you factor 40y^2+y-6? Explain the steps please? I am very confused!
*Tuesday, December 9, 2014 at 11:37pm*

**Math**

A ship leaves England for the Strait of Magellan. It is traveling at a constant speed of eight knots and takes 41 days to reach the Strait of Magellan. The ship reaches the Strait of Magellan at the exact time of day that it left England. How far did the ship travel? Choose ...
*Tuesday, December 9, 2014 at 11:01pm*

**Math**

eight members of a club will make a paper chain. the chain is 4 feet long. each member will make an equal part. how much of the chain , in feet, will each member make?
*Tuesday, December 9, 2014 at 10:27pm*

**Math**

what two numbers add to -19 and multiply to -42 (factoring?!) 14c^2-19c-3
*Tuesday, December 9, 2014 at 10:19pm*

**Math**

Courtney is traveling 8 mph to a location and 6 mph back. trip is 7 hours in total. what time did she spend at each speed???
*Tuesday, December 9, 2014 at 10:08pm*

**Science/Math **

If a student submerges a stopper with a volume of 6.1mL into a cylinder of thick syrup, what will happen to the syrup?
*Tuesday, December 9, 2014 at 9:35pm*

**math**

Nine more than five times a number is that number increased by 45
*Tuesday, December 9, 2014 at 9:27pm*

**Can you check my Math answer please?**

According to the first derivative test, a differentiable function must have a relative minimum between any two relative maxima. True.
*Tuesday, December 9, 2014 at 9:09pm*

**Math**

Start a 4. Create a pattern that multiplies each number by 4 and then adds 3. Stop when you have 5 numbers. Can someone please help me out?
*Tuesday, December 9, 2014 at 9:07pm*

**Math**

A student borrowed $19,000 at an annual interest rate of 6.4%. Calculate the amount of interest due 3 months after the student has begin making payments
*Tuesday, December 9, 2014 at 9:07pm*

**Math**

The function f given by f(x) = x^3 + 12x – 24 is? Increasing for all x's? Cause that's what I think..
*Tuesday, December 9, 2014 at 9:06pm*

**4th grade math**

can you convert 154 minutes to total hours in a week? I don't know how to convert
*Tuesday, December 9, 2014 at 8:46pm*

**Math**

Consider the function y = 3x5 – 25x3 + 60x + 1. Find the critical points of this function. So I got 1 and 2 as the critical points..but I feel like I did something wrong, is this right?
*Tuesday, December 9, 2014 at 8:42pm*

**7th grade math**

Can you check these? 1. A recipe for chocolate pudding calls for 1 ¼ cups of milk. The recipe makes 3 servings. How many cups of milk are needed to make 9 servings? Ans: 1.25/3 = x/9 3x = 9*1.25 3x = 11.25 x = 11.25/3 x = 3.75 or 3 3/4 cups of milk 2. Two trees in Mrs. ...
*Tuesday, December 9, 2014 at 8:33pm*

**Lat math question for some days. Can y'all help?**

Huan deposited $850 into a college savings account earning 4.8% interest compounded annually. He also deposited $850 into a second account earning 4.8% simple interest. He made no additional deposits. After 10 years, which account earned more interest? How much more? A The ...
*Tuesday, December 9, 2014 at 8:27pm*

**math**

A set is known to have 255 proper subsets. How many distinct elements does this set have?
*Tuesday, December 9, 2014 at 8:17pm*

**Can you help me with this math problem? ASAP plz!**

Lester deposited $400 into a savings account earning 4.5% simple interest, and $450 into an investment account earning 3.2% interest compounded annually. What was the total interest he earned in 3 years? A $986.00 B $89.06 C $9.60 D $98.60
*Tuesday, December 9, 2014 at 8:05pm*

**MATH HELP ASAP!**

Randee invested $1000 for college in an account earning 5% simple interest. When she withdrew the investment, she had earned a total of $550 in interest. How long was the money invested? A 9 years B 10 years C 11 years D 12 years
*Tuesday, December 9, 2014 at 7:53pm*

**Math**

Ok so my problem is -3(3x+15)-(10+x)=35 After doing most of the problem I ended up getting -10x=105. I need to have a whole number as an answer but I can't understand what to do.
*Tuesday, December 9, 2014 at 7:50pm*

**math**

I am a number between 60 and a 100. My ones digit is 2 less than my tens digit. I am a prime number. What am I? Explain.
*Tuesday, December 9, 2014 at 7:48pm*

**math**

The factors of a number include 2, 3, 4, 6, 8, 12, 16, 32, and 48. Which could be the number?
*Tuesday, December 9, 2014 at 7:32pm*

**math**

which equation represents the constant rate of change to determine y kilograms for x pounds?
*Tuesday, December 9, 2014 at 7:12pm*

**Math**

Use the formula or a calculator application to find the monthly payment on a home mortgage of $292.649 at 5.004% interest for 25 years.
*Tuesday, December 9, 2014 at 7:08pm*

**Math**

The price of a gallon of gasoline increased by 5 cents one week, decreased by 3 cents each of the next two weeks, and increased by 9 cents the fourth week. Find the average change in the price of gasolina for the 4 weeks.
*Tuesday, December 9, 2014 at 6:33pm*

**math**

Manny makes dinner using 1 box of pasta and 1 jar of sauce. If pasta is sold in pckages of 6 boxes and sauce is sold in packages of 3 jars, what is the least number of dinners that Manny can make without any supplies left over?
*Tuesday, December 9, 2014 at 6:24pm*

**math**

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 165 and a variance of 9. The material is considered defective if the breaking strength is less than 157.8 pounds. What is the probability that a single, randomly selected piece...
*Tuesday, December 9, 2014 at 6:20pm*

**Math**

If a large factory sells its new gadgets for $5 each it can sell 1050 per month and if it sells the same gadgets for $9 it will sell 900 per month. Assuming the relationship between price and sales is linear predict the monthly sales of gadgets to the nearest whole number if ...
*Tuesday, December 9, 2014 at 6:06pm*

**math**

alan, gil, and deb's point in a video game was in the ratio 2:3:4.deb scored 114400 points. how many points did gill score? how many points did they score in all PLEASE HELP but can you make your answer so that I can understand I am in 6th grade but I am not the that smart...
*Tuesday, December 9, 2014 at 6:03pm*

**Math**

In 1980 the average price of a home in Brainerd County was $97,000. By 1986 the average price of a home was $109,000 Write a linear model for the price of a home, P, in Brainerd County as a function of the year, t. Let t=0 correspond to 1980
*Tuesday, December 9, 2014 at 5:56pm*

**Math**

What does Distributive Property means? Give an example!!
*Tuesday, December 9, 2014 at 5:53pm*

**Finance math**

Consider the project with the following expected cash flows: Year Cash flow 0 -$400,000 1 $100,000 2 $120,000 3 $850,000 •If the discount rate is 0%, what is the project's net present value? •If the discount rate is 2%, what is the project's net present value...
*Tuesday, December 9, 2014 at 5:27pm*

**Business Math**

Compute Brianna's estimated tax payment for the third quarter. She is self-employed and she expects to earn $84,400 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...
*Tuesday, December 9, 2014 at 5:24pm*

**Math**

Give two different combinations of transformations that would transform f(x)=5x+3 into g(x)=15x-12
*Tuesday, December 9, 2014 at 5:19pm*

**Math **

There are 8 pencils in a package how many pencils are needed for 28 children if each child gets 4 pencils
*Tuesday, December 9, 2014 at 5:19pm*

**English**

Writers often make common errors by omitting punctuation. Identify and explain the sentence structure error in the following sentence: Tabitha drove to school she took her math test she drove home in the afternoon.
*Tuesday, December 9, 2014 at 5:12pm*

**math**

1 3⁄4 pounds of fudge and split it between her 14 classmates. How much fudge did each person receive?
*Tuesday, December 9, 2014 at 4:45pm*

**Math**

How can you use decimal squares to represent the product 0 * 0.7?
*Tuesday, December 9, 2014 at 4:43pm*

**MATH HELP! Complex Interest**

Huan deposited $850 into a collegesavings account earning 4.8% interestcompounded annually. He also deposited$850 into a second account earning 4.8%simple interest. He made no additionaldeposits. After 10 years, which account earnedmore interest? How much more? A The account ...
*Tuesday, December 9, 2014 at 4:13pm*

**Math**

A piece of string is 3/4 meter long. How many pieces of string that are 1/20 meter long can Wyatt cut?
*Tuesday, December 9, 2014 at 4:10pm*

**math**

Emily spent 1/2 of her money at the store. Then she spent 1/2 of what was left at the bakery. next she spent 1/2 of what was left at the music store. She spent the remaining$6.00 at school. How much money did Emily start with?
*Tuesday, December 9, 2014 at 3:58pm*

**math**

Ms. Johnson's class is having a pizza party. If there are 14 students and 7 pizzas cut into 8 slices, what answer choice represents the fraction of one pizza that each student receives? A.) 1/3 B.) 1/4 C.) 1/2 D.) 1/8
*Tuesday, December 9, 2014 at 3:52pm*

**Math **

Trina has 90 tootsie rolls and 45 blow pops that she is making into goodie bags. Each bag will have the same number of tootsie rolls and blow pops. What is the greatest number of goodie bags Trina can make with no candy left over? How many tootsie rolls and how many blow pops ...
*Tuesday, December 9, 2014 at 3:51pm*

**math**

Amy has 17 employees on her staff. She gave 3 chocolate chip cookies and 2 peanut butter cookies to each employee. What is the total number of cookies she gave away?
*Tuesday, December 9, 2014 at 3:29pm*

**Math**

Sally wants to put lights all around her windows. She has 15 windows all the same. Each one is 3 feet long and 2 feet wide. How many strands of lights will she need to buy if each strand covers 10 feet? How much will it cost her if each strand of lights costs $6.99? Don't ...
*Tuesday, December 9, 2014 at 3:24pm*

**math**

The difference between two numbers is 7.
*Tuesday, December 9, 2014 at 3:09pm*

**Math**

Brady bought a gift that cost 15.99. After a sales tax of 5%, how much did he spend on his gift?
*Tuesday, December 9, 2014 at 3:04pm*

**math**

Jane had 16m of ribbon. She gave 3 2/7of it to Linda and 4 1/3 to Sarah. How much ribbon was left?
*Tuesday, December 9, 2014 at 3:02pm*

**Math**

Express the product, x^2 + 4x divided by 2x^2+13x+15 multiplied by x+5 divided by x^2 - 16 ? a)-1/2x+3 b)x/(2x-16)(x+4) c)(x^2+4x)(x+5) / (2x^2+13x+15)(x^2-16) d)x / (2x+3)(x-4)
*Tuesday, December 9, 2014 at 12:34pm*

**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
*Tuesday, December 9, 2014 at 12:25pm*

**Math**

Jack says that once you have a common denominator you are ready to subtract two mixed numbers. What other step might be necessary before you can subtract? Give an example.
*Tuesday, December 9, 2014 at 12:21pm*

**math**

could you please show me the steps to do this problem? 8 2/7-7 1/3
*Tuesday, December 9, 2014 at 10:23am*

**math**

Calculate the markdown percent. Round to the nearest tenth and do not enter the percent symbol in your answer. % b. If the offer was changed to "Buy 3, Get 2 Free," what would be the new markdown percent? Round to the nearest tenth and do not enter the percent ...
*Tuesday, December 9, 2014 at 10:00am*

**Math**

A carton contains 1 8/9 liters of apple juice. Rosalia drinks 1/6 liter of the juice every day. How much apple juice is left in the carton after a week?
*Tuesday, December 9, 2014 at 8:46am*

**math**

the sum of the ages of sam and tomas is 27 years. seven years ago, tomas was three years more than one-fourth as old as sam. find their present age
*Tuesday, December 9, 2014 at 7:36am*

**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*

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