Thursday

October 30, 2014

October 30, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math**

Janice thinks that 20 hundredths is equivalent to 2 thousandths because 20 hundreds is equal to 2 thousands. Use words and a place value chart to correct Janice’s error.
*Thursday, October 2, 2014 at 12:04am*

**Math**

1/(a-1) + 1/b = c solve for a
*Wednesday, October 1, 2014 at 11:47pm*

**Math - Mixed Numbers**

Jared used 1 2/5 bags of soil for his garden. He is digging another garden that will need 1/5 as much soil as the original. How much will he use total? Is the answer 1 17/25 ?
*Wednesday, October 1, 2014 at 10:59pm*

**Math**

A rectangular pool measuring 6 feet by 12 feet is surrounded by a walkway. The width of the walkway is the same on all four sides of the pool. If the total area of the walkway and pool is 520 square feet, what is the number of feet in the width of the walkway?
*Wednesday, October 1, 2014 at 10:43pm*

**Math 1**

write an equation that represents the following situation. Let x= the number of adults. Your equatin should start with "1220=" and use x as the only variable.. The number of students attending the fall play was 150 more than the number of adults attending. A total of...
*Wednesday, October 1, 2014 at 10:06pm*

**Math help!**

Find the first five terms of the sequence whose nth term is given. a: (-2)^n + 2^n b: n^2(-1)^n c: |10 - n^2|
*Wednesday, October 1, 2014 at 9:57pm*

**Math**

fun center rental popcorn machines for $20 per hour. In addition to the hourly charge, there is a rental fee of $32. Is the number of hours you rent the popcorn machine proportional to the total cost?
*Wednesday, October 1, 2014 at 9:55pm*

**Math**

The length of a rectangular board is 10 cm longer than its width. The width of the board is 26 cm. the board is cut into 9 equal pieces. What is the area of each piece? What are the possible dimensions of each piece?
*Wednesday, October 1, 2014 at 9:45pm*

**Math**

One hundred sixty acres is a square with a side length of one-half a mile. How many hectares are in one square mile?
*Wednesday, October 1, 2014 at 9:39pm*

**math**

Fern rounded to the nearest ten to estimate 548-132. She subtracted 540-130 and got 410. Is Fern's estimate correct? Explain.
*Wednesday, October 1, 2014 at 9:26pm*

**math**

tom and max has 72 football card
*Wednesday, October 1, 2014 at 9:14pm*

**Math**

Two-fifths of the instruments in the marching bands are brass. One-eighth of the brass instruments are tubas. what fraction of the band is tubas? if there are 240 band instruments total, how many are tubas?
*Wednesday, October 1, 2014 at 9:00pm*

**Math**

Each letter in this addition problem stands for a different digit, but every letter stands for the same digit everywhere it appears. For example, all of the C's stand for the same digit. Reconstruct the problem to find the value of SCENE. CUTS +CUTS ------ SCENE
*Wednesday, October 1, 2014 at 8:56pm*

**math**

A game room has a flooring that is 120 feet by 75 feet. A scale drawing of the floor on grid paper uses a scale of 1 unit:5 feet. What are the dimensions of the scale drawing?
*Wednesday, October 1, 2014 at 8:56pm*

**Math**

Hi, I have two questions here I need help with, thank you in advance. 1. Peggy scored 68 on her first three tests of the term. What would she have to score on the fourth test to have an average of 70 on the fourth test? 2. If you were to place the digits 1,2,4,8,9, one per box...
*Wednesday, October 1, 2014 at 8:41pm*

**Math**

Hal Fritz purchased a $5,000 bond at 95. The annual interest is 6%. What was the cost of the bond? What was the annual interest? What is the yield (to nearest tenth of a percent)?
*Wednesday, October 1, 2014 at 8:36pm*

**Math**

find limit of h->0 [f(8+h)-f(8)]/(h) where f(x)=sqrt(x)-8
*Wednesday, October 1, 2014 at 8:23pm*

**math**

2x^2+5x-1=0
*Wednesday, October 1, 2014 at 8:22pm*

**Math**

On what day in the year 1943 was the earth 300 000 minutes old? (give the month and day)
*Wednesday, October 1, 2014 at 8:13pm*

**math**

having trouble with these 2 problems & the process. -50 3/4 +(-6.05)+ 100= and 23 7/8 - 15 3/40 +(-3 4/5)= help please!!!!
*Wednesday, October 1, 2014 at 8:11pm*

**Math**

A car rental company charges $100 for the first 50 miles and $10 for every additional 10 miles. If Gregg traveled 150 miles, how much would he pay?
*Wednesday, October 1, 2014 at 8:07pm*

**Math**

If 8 jump ropes and 4 dolls cost $64, and 4 jump ropes and 8 dolls cost $92, how much will 12 jump ropes and 12 dolls cost?
*Wednesday, October 1, 2014 at 8:07pm*

**math**

if total ticket sales were $1625 adult tickets were $7.00 and student tickets were $3.00 and twice as many students bought tickets than adults, how many students and adult tickets were sold?
*Wednesday, October 1, 2014 at 8:06pm*

**Math**

A rectangular floor measures 546cm by 714cm. You have a lot of square tiles, each measuring 42cm by 42cm. How many of these tiles will you need to tile the floor?
*Wednesday, October 1, 2014 at 8:01pm*

**math**

A car rental company charges $100 for the first 50 miles and $10 for every additional 10 miles. If Gregg traveled 150 miles, how much would he pay? I know the answer intuitively is $200, but how do I set up this equation
*Wednesday, October 1, 2014 at 8:00pm*

**Math help!**

Identify the property of integers being illustrated in each of the following: a:(-2)(3) (the "E" letter) element of I b: (-4)0=0 c: -2(3+4)=-2(3) + (-2)4 d: (-2)3=3(-2)
*Wednesday, October 1, 2014 at 7:58pm*

**Math (for Damon)**

Nathan and Steven stacked boxes on a shelf. Nathan lifted 13 boxes and Steven lifted 15 boxes. The boxes that Nathan lifted each weighed 12 lb more than the boxes Steven lifted. Which expression represents the total number of pounds Nathan lifted? Let s represent the weight of...
*Wednesday, October 1, 2014 at 7:35pm*

**Math**

How do you solve (5,-1) -(2,-6) ________ (?,?)
*Wednesday, October 1, 2014 at 7:30pm*

**Math plz.**

Simplify the following expression. z – 2z + 4z + 6
*Wednesday, October 1, 2014 at 7:21pm*

**Math question? :c**

Use the Distributive Property to multiply. Show all steps. 7(c + 4)
*Wednesday, October 1, 2014 at 7:21pm*

**math**

Pam bought a new bedroom suit for $2588.she made a down payment of $188 and paid the remaining amount in 24 equal monthly payments.How much did she pay for each monthly payment? 188-24=164 is that how to do it? PLEASE REPLY BACK AND HELP ME!!!!!!!!!!!!!!!!!!!!!!!
*Wednesday, October 1, 2014 at 7:21pm*

**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*

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