Thursday

October 23, 2014

October 23, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

the length of a table is 6 feet. On a scale drawing, the length is 2 inches. Write three possible scales for the drawing.
*Wednesday, October 1, 2014 at 7:17pm*

**math**

Im the same person from my other questions! Two stores sell the same computer for the same original price. Store A advertises that the computer is on sale for 25% off the original price. Store B advertises that it is reducing the computer’s price by $180. When Brittany ...
*Wednesday, October 1, 2014 at 7:14pm*

**1 math question**

8. Use the Distributive Property to simplify. Show all steps. 8(6 – 2)
*Wednesday, October 1, 2014 at 7:14pm*

**Math help!**

Identify the property of integers being illustrated in each of the following: a:(-2)(3) ¸ I b: (-4)0=0 c: -2(3+4)=-2(3) + (-2)4 d: (-2)3=3(-2)
*Wednesday, October 1, 2014 at 7:11pm*

**Finite Math**

Malika Agwani starts her career at the age of 25 and makes equal monthly deposits for 35 years into an annuity that earns 6.25% compounded monthly. She plans on retiring the age of 60 and would like to withdraw $3000 monthly for 25 years, bringing the account balance to $0. ...
*Wednesday, October 1, 2014 at 7:05pm*

**math**

If x is an integer and x is not equal to zero, which of the following are always positive and which are always negative? a: -x to the power of 4 b: (-x) power of 4 c: x to the power of 4 d: x e: -x
*Wednesday, October 1, 2014 at 7:03pm*

**Finite Math**

Laurie and Craig have purchased a new home. They paid $25,000 down and have a 15-year mortgage for which they pay $980 per month. If the interest is 8.25% compounded monthly, what did the house that Laurie and Craig purchased originally cost?
*Wednesday, October 1, 2014 at 6:57pm*

**Math**

Over 10 plays, a football team gained 63 yards. On 4 of the plays the team gained 0 yards, on 1 play the team lost 3 yards and on 1 play the team lost 6 yards. What was the team's mean gain, in yards, per play for the remaining plays. I did 63 plus 9 equals 72 divided by 4...
*Wednesday, October 1, 2014 at 6:43pm*

**Math **

List these numbers from least to greatest 7/3, 3/4, 2/3, 0.5, 1.3
*Wednesday, October 1, 2014 at 6:23pm*

**Math **

(Checking my answers!) Marco and Drew stacked boxes on a shelf. Marco lifted 9 boxes and Drew lifted 14 boxes. The boxes that Drew lifted each weighed 8 lb less than the boxes Marco lifted. m − 8 14(m − 8) ** 9(m + 8) 112m Two stores sell the same refrigerator for ...
*Wednesday, October 1, 2014 at 6:20pm*

**Math**

Over 10 plays, a football team gained 63 yards. On 4 of the plays the team gained 0 yards, on 1 play the team lost 3 yards and on 1 play the team lost 6 yards. What was the team's mean gain, in yards, per play for the remaining plays? Could somebody PLEASE HELP ME! It'...
*Wednesday, October 1, 2014 at 6:18pm*

**Math help!**

The number of students taking sophomore mathematics at Union College has been decreasing at the rate of 20 per year for many years. Assuming this trend continues, write a multiplication problem that describes the change in the number of sophomores taking mathematics at Union ...
*Wednesday, October 1, 2014 at 6:18pm*

**Chemistry/Math**

convert 0.01403 grams to ppm please show all step
*Wednesday, October 1, 2014 at 6:07pm*

**Math-G7 Help please**

Write a system of equations to match each of these problems. Then solve the equations using the method... Substitution, or linear combinations. _____________________________________ 1. Dan is 4 years older than his brother Gabriel. Together their ages equal 22. How old is ...
*Wednesday, October 1, 2014 at 5:57pm*

**Math**

Over 10 plays, a football team gained 63 yards. On 4 of the plays the team gained 0 yards, on 1 play the team lost 3 yards and on 1 play the team lost 6 yards. What was the team's mean gain, in yards, per play for the remaining plays?
*Wednesday, October 1, 2014 at 5:52pm*

**Math**

Hot dog buns come in packages of eight Mrs. Wilson has a total of 40 hot dog buns draw a picture to find out how many packages of hot dog buns Mrs. Wilson has
*Wednesday, October 1, 2014 at 5:45pm*

**math**

a car traveling in a straight line has a initial velocity of 12.0 m/s.zoe steps on the gas and accelerates at at rate of 2 m/s2.The care ends up with a final velocity of 20.0 m/s.how long did it take zoe to reach this speed
*Wednesday, October 1, 2014 at 5:41pm*

**Algerbra math**

(7x^2+3x+9)+(2x^2+5x-2)
*Wednesday, October 1, 2014 at 5:01pm*

**Math**

Aiden drew a square that has an area greater then Dalton's rectangle. what could the sides of austin's square be?
*Wednesday, October 1, 2014 at 5:01pm*

**math**

Let y= -3x-2. Find the value of y (in parts (a)-(d)) for each of the following values of x: a: -1 b: 100 c: -2 d: -a in terms of a e: For which values of x will y be -11?
*Wednesday, October 1, 2014 at 5:01pm*

**math**

hello im having problems with my math 1 Wells College in Aurora,New York was previously an all -girls college.In 2005,the college began to allow boys to enroll. By 2012, the ratio of boys to girls was 3 to 7. if there were 200 more girls then boys in 2012, how many boys were ...
*Wednesday, October 1, 2014 at 4:38pm*

**MATH**

A water plant can process 25 million gallons of water a day. How many gallons of water does it produce per hour? Round to the nearest hundredth.
*Wednesday, October 1, 2014 at 4:33pm*

**Math. idk?**

6. Name the like terms in the following expression. 5m + 4 + 3m + 6p 7. Write an equation for the following: Twelve times h equals one hundred twenty minus thirty-six.State whether the equation is true, false, or an open sentence. Explain. 8. Use the Distributive Property to ...
*Wednesday, October 1, 2014 at 4:33pm*

**Math- Multi-step word problems**

A plane traveling from Phoenix to Washington, D.C with a tailwind of 20 miles per hour takes 3 hours. The return trip in the same wind, which is now a headwind, takes the same plane 3 hours and 12 minutes. What is the average speed of the plane in calm conditions? 600 miles/...
*Wednesday, October 1, 2014 at 3:30pm*

**Math- Multi-step word problems**

A canoe in still water travels at a rate of 10 miles per hour. The current today is traveling at a rate of 3 miles per hour. If it took an extra hour to travel upstream, how far was the trip one way? about 14 miles about 15 miles about 16 miles about 17 miles
*Wednesday, October 1, 2014 at 3:29pm*

**Math- Multi-step word problems**

A plane traveling from Chicago to Boston with a tailwind of 10 miles per hour takes 4 hours. The return trip in the same wind, which is now a headwind, takes the same plane 4 hours and 9 minutes. According to this problem, about how far is it from Chicago to Boston? 1800 miles...
*Wednesday, October 1, 2014 at 3:28pm*

**Math--1 question**

Write an equation for the problem below. Is the given value a solution? A farmer sees 56 of his cows out of the barn. He knows that he has 83 cows all together. Let c represent the number of cows still in the barn. Could c = 33? (1 point) 56 + 83 = c; no 56 + c = 83; no 83 + ...
*Wednesday, October 1, 2014 at 3:12pm*

**Math**

Write an integer to represent the final temperature. The day started out at 6am as 32 degrees rose 24 degrees by noon and dropped 14 degrees at 6pm.
*Wednesday, October 1, 2014 at 3:02pm*

**math**

how we can knew the minimum value of the point on a curve?
*Wednesday, October 1, 2014 at 2:45pm*

**math**

An oil tank has a capacity of 45 gallons.At the beginning of October it is 80% full.At the end of October it is 1/3 full.How many gallons of oil were used in October? a. 21 b. 25 c. 41 d. 27 e. 30 my answer is (e)30, 45 x 1/3 =15 ,so 2/3 = 30
*Wednesday, October 1, 2014 at 2:30pm*

**Math Multiplication **

What are the factor pairs of 642? Please dont ask what I dont understand because I cant find the answer
*Wednesday, October 1, 2014 at 2:26pm*

**math**

The diameter of a circle is increased by 50%.The area is increased by a. 50% b. 100% c. 125% d. 200% e. 250% please answer and explain
*Wednesday, October 1, 2014 at 2:26pm*

**math**

If the outer diameter of a cylindrical oil tank is 54.28 inches and the inner diameter is 48.7 inches,the thickness of the wall of the tank,in inches, is
*Wednesday, October 1, 2014 at 2:23pm*

**Math**

Suppose an urn contains 10 balls numbered from 1 to 10. Someone draws 3 balls simultaneously from the urn (i.e. without replacement.) What is the probability that the lowest number drawn is 2? (8C3)/(10C3) but I know that is wrong. I also tried ((8C3)+(7C3)+(6C3))/(10C3)
*Wednesday, October 1, 2014 at 1:39pm*

**math**

Which diagram correctly represents this sentence?
*Wednesday, October 1, 2014 at 1:37pm*

**math**

The area of a circle is found with the formula A =〖πr〗^2, where π represents 3.14. If a tile artist is placing tiles in a circular mosaic pattern and the area of the circle is 658 square feet, what is the approximate radius of the circle in feet? a.)10...
*Wednesday, October 1, 2014 at 1:15pm*

**Math**

A study shows that 6% of household appliances fail during any given year. If a person has 6 household appliances, what is the probability that exactly 2 of them will fail next year? (x) npq = P(.6+.94)=1 6*2=12
*Wednesday, October 1, 2014 at 1:11pm*

**Math**

y - y1 = m(x-x1) solve for x1
*Wednesday, October 1, 2014 at 1:07pm*

**Math**

What is the answer to 4 square root 1280 r^8 t^12 ?
*Wednesday, October 1, 2014 at 12:35pm*

**math**

students of class XI of a school were motivated to apply for NCC. from each section equal number of students opted for NCC. if there are 3x + 11 sections of class XI and total number of students in all the sections is represented by 6x^3+13x^2+6x+158, then find the number of ...
*Wednesday, October 1, 2014 at 11:08am*

**Math Definition Help**

A function f(x) has an inverse function, g(x), if and only if f(x) is one-to-one. True or False? My answer: True
*Wednesday, October 1, 2014 at 8:15am*

**Math Help**

Find the inverse of f(x)=3x+4/5
*Wednesday, October 1, 2014 at 8:05am*

**MATH**

ln (3x-2/x-1) <0 Can I re-write this as (3x-2/x-1)<e^0 And e^0 is 1? And then I can solve for x?
*Wednesday, October 1, 2014 at 7:10am*

**Math**

1. A 16-team bowling league has 800,000 to be awarded as prize money. If the last-placed team is awarded 12,500 in prize money and the award increases by a constant amount for each successive finishing place, how much will the first-placed team receive? 2. In Museum A, a stamp...
*Wednesday, October 1, 2014 at 7:10am*

**math**

Write the first six terms of the arithmetic sequence with the given properties. a = 3, d = 2 a. 3,8,13,18,23,28 b. 3,5,7,9,11,13 c. 3,6,8,10,12,14 d. 2,7,12,17,22,27 e. 2,4,6,8,10,12
*Wednesday, October 1, 2014 at 4:11am*

**Math**

3/8+9/7
*Wednesday, October 1, 2014 at 3:31am*

**3rd garde math**

what is 12 x 12? im having a hard time can anyone help me??????????
*Wednesday, October 1, 2014 at 3:06am*

**math **

In how many ways can a row of three contestants for a TV game show be selected from an audience of 350 people?
*Wednesday, October 1, 2014 at 2:07am*

**math**

In a class of 100 students 50 are footballers 30 are basketballers and 20 are both basket ballers and footballers represent the above information ina venn diagram
*Wednesday, October 1, 2014 at 2:05am*

**Math**

List out the elements of the set "The letters of the word Mississippi"
*Wednesday, October 1, 2014 at 2:01am*

**Math**

Write an equation for the line in slope intercept form Slope:-2 passing through (-2,8)
*Wednesday, October 1, 2014 at 1:18am*

**Math**

An electrician was hired to run the wires for a surround-sound stereo speaker system. She purchased 2 rolls of 14-gauge speaker wire. Each roll contains 4 m of wire. For each of 2 speakers, 2 ft. of wire are required. For each of the other 2 speakers, 11 ft. of wire are ...
*Wednesday, October 1, 2014 at 12:06am*

**Math**

Bianca is making scarves to sell has 33 pieces of of blue fabric 37 pieces of green fabric and 41 pices of red fabric suppose Bianca uses 3 pieces of fabric to make 1 scarf how many scarves can she make?
*Tuesday, September 30, 2014 at 11:47pm*

**Math**

Convert 2yd, 2ft, 5in. to centimeters. Convert 10yd,1ft, 7in. to meters. I tried it twice but still didn't get it right. Please help me out.
*Tuesday, September 30, 2014 at 11:21pm*

**Math**

The question is: f(x)=(1+2x)/(1+x), find the inverse and state the domain I have made it up to y=(1+2x)/(1+x) x=(1+2y)/(1+y)
*Tuesday, September 30, 2014 at 10:55pm*

**MATH**

SASHA AND FRANCISCO WERE SELLING LEMONADE FOR $.25 PER HALF CUP AND $.50 PER FULL CUP. AT THE END OF THE DAY THEY HAD COLLECTED $15 AND HAD USED 37 CUPS. HOW MANY FULL CUPS AND HOW MANY HALF CUPS DID THEY SELL?
*Tuesday, September 30, 2014 at 10:55pm*

**7th grade math**

Can you check this problem? Jean has 5 different colors of markers: red, blue, green, orange, and purple. Two colors are used to make a sign. How many different combinations are possible? List them. Ans: 10 possible combinations red/blue, red/green, red/orange, red/purple, ...
*Tuesday, September 30, 2014 at 10:50pm*

**math 4 **

yson talked with 150 customers on his shift yesterday. Of those, 20% resulted in a successful upsell of additional purchases. If Tyson makes a $6 commission on top of his regular salary for each successful upsell that he makes, how much commission did he make yesterday? $ 30...
*Tuesday, September 30, 2014 at 10:47pm*

**math 3**

A customer sent in a $230 check to pay off an overdue bill but failed to pay the interest that accrued over the 45 days after the posted due date. The original balance owed was $230, and the account accrues interest at $0.42 per day. What amount of money should the customer ...
*Tuesday, September 30, 2014 at 10:46pm*

**2 math **

Denise spoke with a total of 80 customers on her shift at work today. Of those customers, 55% resulted in a sale, 15% said they would "come back another time", and 10% were sent to speak with the supervisor on shift. What is the total number of customer sales that ...
*Tuesday, September 30, 2014 at 10:45pm*

**Math**

I forgot how to do inequalities with a rational function. The question I have is: ((3x-2)/(x-1))<1
*Tuesday, September 30, 2014 at 10:24pm*

**math**

the ratio of the number of people who own a smartphone than a flip phone, how many people own each type of phone?
*Tuesday, September 30, 2014 at 10:20pm*

**Math (LCM)**

A music store gives every 20th customer a $5 gift card. every 50th customer gets a $10 gift card. Which customer will be the first to receive both types of gift cards? Use prime factorizations.
*Tuesday, September 30, 2014 at 10:04pm*

**math**

a man has 35 models. he has 4 times as many airplane models as he does helicopter models. how many airplane models does he have?
*Tuesday, September 30, 2014 at 10:01pm*

**Math (LCM)**

A music store gives every 20th customer a $5 gift card. every 59th customer gets a $10 gift card. Which customer will be the first to receive both types of gift cards? Use prime factorizations.
*Tuesday, September 30, 2014 at 9:56pm*

**Math .**

3(4x - 2) = 2(6x - 3) one solution infinite solutions ** no solution a+5 = 1/5(5a + 25) one solution infinite solutions no solution ** 3(4x - 3) - 7x = 5x - 9 one solution infinite solutions no solution 8+2(8x - 6) (choose all that apply) 2(4x + 7) 9x – 10 16x – 4...
*Tuesday, September 30, 2014 at 9:50pm*

**math**

Kevin is a quarterback on the football team. He completed 36 passes during the season. His second-string replacement mark completed 2/9 as many passes as kevin. how many passes did Mark complete?
*Tuesday, September 30, 2014 at 9:48pm*

**math**

mary put new tiles on her kitchen floor. the floor measures 6 feet long by 5 feet wide. she used 10 tiles to cover the entire floor. each tile was 3 feet long. write an equation using the variable x to model this situation. what does x represent in the equation?
*Tuesday, September 30, 2014 at 9:30pm*

**math**

what are the missing numbers between 21 and 63
*Tuesday, September 30, 2014 at 9:15pm*

**Math**

How to plot (0,-2)
*Tuesday, September 30, 2014 at 9:13pm*

**Math**

Suppose an experiment involves rolling a fair die 720 times. Find the mean of the number of times a number less than 2 is rolled
*Tuesday, September 30, 2014 at 9:11pm*

**math**

1. Finding the Counterfeit Coin. You have 5 coins. You know that one of them is counterfeit and weighs less than the others. Suppose also that you have a balance scale. Is there a strategy for finding the counterfeit coin using the balance scale only twice? If yes, what is the...
*Tuesday, September 30, 2014 at 8:46pm*

**Math**

A woman has a total of $10,000 to invest. She invests part of the money in an account that pays 6% per year and the rest in an account that pays 9% per year. If the interest earned in the first year is $750, how much did she invest in each account?
*Tuesday, September 30, 2014 at 8:36pm*

**Math**

Travis has a total of $6,000 invested in two accounts. The total amount of interest he earns from the accounts in the first year is $420. If one account pays 6% per year and the other pays 9% per year, how much did he invest in each account?
*Tuesday, September 30, 2014 at 8:36pm*

**Math**

A woman owns a small, cash-only business in a state that requires her to charge 6% sales tax on each item she sells. At the beginning of the day, she has $290 in the cash register. At the end of the day, she has $1200 in the register. How much money should she send to the ...
*Tuesday, September 30, 2014 at 8:35pm*

**Math**

Every item in the Just a Dollar store is priced at $1.00. When Mary Jo opens the store, there is $127.00 in the cash register. When she counts the money in the cash register at the end of the day, the total is $1,055.80. If the sales tax rate is 8%, how many items were sold ...
*Tuesday, September 30, 2014 at 8:35pm*

**Math**

The third angle in an isosceles triangle is 116° more than twice as large as each of the two base angles. Find the measure of each angle.
*Tuesday, September 30, 2014 at 8:34pm*

**7th grade math**

find the sum 7/20 + (-4.8) + (-4/5) +4.9 im cluless
*Tuesday, September 30, 2014 at 8:08pm*

**math**

A room measures 14 feet by 20. feet. How many tiles would it take to cover the deck if the square tiles measure 8.0 inches to the side?
*Tuesday, September 30, 2014 at 7:56pm*

**8th grade math**

At 2pm the temperature is 22 degrees, by 4am it is negative 7 degrees. We think the answer in the change of temperature is 29 degrees am I right?
*Tuesday, September 30, 2014 at 7:44pm*

**Math**

4(2x + 3) = 2(3x - 4) one solution *my answer* infinite solutions no solution
*Tuesday, September 30, 2014 at 7:08pm*

**Math Help **

Which pair(s) of functions are inverses? There may be more than one correct answer. a.) f(x) = x - 12, g(x) = x + 12 b.) f(x) = 3x, g(x) = 1/3x c.) f(x) = 4x, g(x) = -4x d.) f(x) = 2x + 1, g(x) = 2x - 1 My answer: B & C
*Tuesday, September 30, 2014 at 7:04pm*

**Math**

1.) What is the inverse of the relation (3, -1), (2. 5), (-4, -4)? 2.) What is the inverse of the relation (1, -3), (3, 5), (6, -2)?
*Tuesday, September 30, 2014 at 7:03pm*

**Math **

What is 145 over 16 in simplest form? 29/2 * 5/8 = 145/16 = ?? PLEASE HELP MMEEEE DX
*Tuesday, September 30, 2014 at 7:02pm*

**Math Pre-Calc/Trig**

If 11 square meters of tile are available to make a rectangle whose width must be 6 meters less than its length, what would be the dimensions of the rectangle?
*Tuesday, September 30, 2014 at 7:01pm*

**8th grade Math**

At 2pm the temperature is 22 degrees, by 4am it is negative 7 degrees. We think the answer in the change of temperature is 22 degrees am I right?
*Tuesday, September 30, 2014 at 6:51pm*

**Math**

This is a bonus question. If the modes of a problem are13 and15 and the mean and the median are 15 how do you come up with the other numbers
*Tuesday, September 30, 2014 at 6:17pm*

**math**

how much fuel will all of your familys vehicles hold if they are completely full Explain
*Tuesday, September 30, 2014 at 6:04pm*

**Math z-scores**

find the z-scores for which 92% of the distribution's area lies between -z and z
*Tuesday, September 30, 2014 at 6:01pm*

**Math (What Do I Do)**

Choose the best graph for the given situation. Copy the graph and label the axes with the variables give in parenthesis (the first variable goes on the y axis and the second variable on the x axis). 1.Karina walked from home to the library, did some homework, then walked back...
*Tuesday, September 30, 2014 at 5:59pm*

**Math**

4(2x - 3) - 4x (answer all that apply) 4x – 12 *my answer* 3x – 4 *my answer* 3(2x – 6) 4(x – 5)
*Tuesday, September 30, 2014 at 5:45pm*

**4th grade math**

Danielle received $32 for her birthday. Three years ago, she received 1/4 as much. How much did Danielle receive three years ago?
*Tuesday, September 30, 2014 at 5:28pm*

**math**

(3r-5)(x+3)
*Tuesday, September 30, 2014 at 5:22pm*

**math**

Most Americans throw away about 1365 pounds of trash each year. Is it reasonable to estimate that Americans throw away over 10000 pounds of trash in 5 years? Explain.
*Tuesday, September 30, 2014 at 4:47pm*

**Math Questions**

1.) What is the inverse of the relation (3, -1), (2. 5), (-4, -4)? 2.) What is the inverse of the relation (1, -3), (3, 5), (6, -2)?
*Tuesday, September 30, 2014 at 4:42pm*

**math models**

The Sears Tower in Chicago is 1454 feet high. Sketch and find the angle of elevation from a point 750 feet from the base to the top of the tower. Relate your answer to the nearest tenth. a. 62.7º b. 27.3º c. 31.1º d. 58.9º
*Tuesday, September 30, 2014 at 4:37pm*

**4-- math questions**

1. Simplify this expression: 6d + 11 – 3d + 4. 3d 17d + 7d 3d + 15 9d + 15 2. Name the coefficients in this expression: 7a + 3b + 9. 7 and 3 7, 3, and 9 7a and 3b 7a, 3b, and 9 3. Name the like terms in this expression: 4c + 12 + 3c + 2b. 4c, 3c, and 2b 4c and 2b 4c and ...
*Tuesday, September 30, 2014 at 4:20pm*

**Math**

2. What is the selling price of a $12,543 boat if a $758 discount is given? A. $11,758 B. $12,785 C. $11,785 D. $12,758 I think it is C.
*Tuesday, September 30, 2014 at 3:48pm*

**Math**

Subtract the fractions and write your answer in lowest terms. 4/5-3/8 A. 1/40 B. 1 7/4 C. 7/10 D. 17/40
*Tuesday, September 30, 2014 at 3:23pm*

**math...**

Add the fractions and write your answer in lowest terms. 2/5+1/9 A. 1/15 B. 23/45 C. 3/14 D.19/45 B? Thanks
*Tuesday, September 30, 2014 at 3:17pm*

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