Tuesday

March 31, 2015

March 31, 2015

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math**

Draw a parallelogram with an area of 48 sq cm with a decimal factor oft the length ,width or both
*Monday, February 23, 2015 at 9:41pm*

**math **

hahn had $25 left in her purse after shopping and spending 20%of her money.how much did she leave to go shopping
*Monday, February 23, 2015 at 9:27pm*

**math**

jackie kept $75 out of the $80 she found on the streets of nyc what percentage did she use
*Monday, February 23, 2015 at 9:22pm*

**math**

A rectangular park has an area of 2/3 square mile. The length of the park is 2 2/3 the width of the park. What is the width of the park? I am confused on how to do this. I know lw=a A= 2/3 sq mi l= 2 2/3w but I do not understand how to find the width :/
*Monday, February 23, 2015 at 9:01pm*

**math**

ramon spent 60% of his $437 paycheck gifts for his friends .how much did he spend
*Monday, February 23, 2015 at 8:55pm*

**math**

Given that log y = log (10^n) solve for n.
*Monday, February 23, 2015 at 8:52pm*

**math **

17 is what percent of 51
*Monday, February 23, 2015 at 8:49pm*

**math **

22 is what percent of 88
*Monday, February 23, 2015 at 8:48pm*

**math **

what is 42% of 87
*Monday, February 23, 2015 at 8:47pm*

**math **

peter spent 20% of his money. he has $40 left in his pocket . how much did he go out with.
*Monday, February 23, 2015 at 8:37pm*

**math**

Todd had $44 in his wallet. he spent 30% of his money. how much money does he have left
*Monday, February 23, 2015 at 8:34pm*

**Math**

Thank you Steve, sorry for the confusion. This is a chart with x's in the numbers (like a bin). There aren't any x's in 5 or 7. Would I exclude them and only use, 0, 1, 2, 3, 4, 6, and 8? Then my median would be 3. Correct? Thanks
*Monday, February 23, 2015 at 8:21pm*

**math**

How can i simplify this furthur: 5x(x-3)/(x-1)(5x-15)
*Monday, February 23, 2015 at 8:20pm*

**math**

sal spent $6 out of $12. what percent of his money did he use
*Monday, February 23, 2015 at 8:17pm*

**Math**

I have a table with x and y. x = 0, 1, 2, and 3. y=2xsquared. My answers are 0 = 0, 1 = 4, 2 = 16, and 3 = 36. Am I right? Thanks.
*Monday, February 23, 2015 at 8:04pm*

**Math**

divide $8.91 by 6 and round the quotient to the nearest cent.
*Monday, February 23, 2015 at 7:46pm*

**Math**

I have to find the median of 0, 1, 2, 3, 4, 5, 6, 7, 8. There is no data in 5 or 7. Would the median still be 4? Thanks for your help
*Monday, February 23, 2015 at 7:39pm*

**Math**

If 8 students eat apples and 12 students eat bananas, how many students eat apples or bananas?
*Monday, February 23, 2015 at 7:34pm*

**Math**

A store has 21 bikes and scooters. If there are a total of 54 wheels, how many of each are there?
*Monday, February 23, 2015 at 7:18pm*

**Math**

If Zachary takes 3 steps for every 2 steps Richie takes how nany steps will Zachary take if Richie takes 18 steps
*Monday, February 23, 2015 at 7:06pm*

**math concepts**

Matthew sits at his desk unable to figure out the answer to a division problem. He reaches into his desk and pulls out a calculator. What is the correct response for Matthew's teacher to have? A. "Put that calculator away, you can't cheat on your work." B. &...
*Monday, February 23, 2015 at 6:59pm*

**Math 222**

Please help me solve and understand this.**MY PLUS AND EQUAL KEY IS NOT WORKING** F equals mv^2/r
*Monday, February 23, 2015 at 6:54pm*

**Math**

Eric and frank want to equally share 3/4
*Monday, February 23, 2015 at 6:46pm*

**Math**

Which of the following is the measure of an acute angle? A. 180 degrees B. 135 degrees C. 90 degrees D. 28 degrees**** It's D right?
*Monday, February 23, 2015 at 6:34pm*

**math**

Juanita wants to give bags of stickers to her friends. she wants to give the same number of stickers to each friend. she's not sure if she needs 4 bags or 6 bags of stickers. How many stickers could she buy so there are no stickers left over.
*Monday, February 23, 2015 at 6:32pm*

**Math**

Which of the following is a measure of an obtuse angle? A. 40 degrees B. 100 degrees C. 90 degrees*** D. 180 degrees I am most certain it is C?
*Monday, February 23, 2015 at 6:25pm*

**Math**

What type of angle do construction workers use when building to make sure the walls and floors of a building are perpendicular? A. acute B. obtuse C. right D. straight*** I think it is D
*Monday, February 23, 2015 at 6:22pm*

**math concepts**

Sarah understands that if there are 11 ones, the first 10 move over to the tens column as one unit (i.e., one group of 10). What concept does this understanding represent? A. Renaming B. Regrouping C. Borrowing D. Place value my answer a.
*Monday, February 23, 2015 at 6:07pm*

**Math**

A rectangular prism has a width of 92 ft and a volume of 240 ft3. Find the volume of a similar prism with a width of 46 ft. Round to the nearest tenth, if necessary. 30 ft3 40 ft3 60 ft3 120 ft3 can someone please help me. I'm having trouble working this out.
*Monday, February 23, 2015 at 5:54pm*

**Math**

Given f(5) = 5 and f(9) = -2 determine the equation of the linear function f
*Monday, February 23, 2015 at 5:53pm*

**Math**

If A(-6,-1) lies on the graph of h(x), find A^1 on the graph of j(x) if j(x) = h(3-x) + 4
*Monday, February 23, 2015 at 5:50pm*

**Math**

The 5th term of an arithmetic sequence is 22 and the 15th term is 62. Find the 100th term and the sum of the first 60 terms.
*Monday, February 23, 2015 at 5:14pm*

**math**

let two stochastically independent random variables y1 and y2 with the distribution b(100,p1) and b(100,p2) respectively,y1=50 and y2=40 ,find 90% a confidence interval for p1-p2 ?
*Monday, February 23, 2015 at 5:14pm*

**math**

what is 1/4 and 1/3 divided by
*Monday, February 23, 2015 at 5:06pm*

**math**

let two stochastically independent random variables y1 and y2 with the distribution b(n1,p1) and b(n2,p2) respectively,how find a confidence interval for p1-p2 ?
*Monday, February 23, 2015 at 5:04pm*

**math**

simplifying radical expressions 3\/""""4""7" 250z x sorry it was hard to type some of the characters.so it's cube on outside of 250 z to the 4th, xto the 7th inside the radical sign
*Monday, February 23, 2015 at 5:03pm*

**math**

-3+2(6z-3+4)
*Monday, February 23, 2015 at 5:01pm*

**math 107**

Use the following diagram of a flowerbed of petunias to answer the following questions. This diagram is a rectangle with ½ a circle on each end. The circle diameter is 22 feet, while the length of the rectangle is 60 feet. If you draw an X in the middle of the rectangle...
*Monday, February 23, 2015 at 4:50pm*

**math**

We need to find the length of AD. AB is 20cm, BC is 13cm and CD is 10 cm.
*Monday, February 23, 2015 at 4:27pm*

**math**

at a certain time of day a 5 foot 11 inch woman casts a 3 foot 11 inch shadow. how tall is a nearby tree that casts a 14 foot 5 inch shadow at the same time of day?
*Monday, February 23, 2015 at 2:51pm*

**Math**

What is the domain of x/(x-1)? Is it all x <> 1?
*Monday, February 23, 2015 at 2:03pm*

**Business Math**

Find the ordinary interest to the nearest cent. $19,000 at 12% for 101 days
*Monday, February 23, 2015 at 1:24pm*

**Vectors Math**

A 5 N force which acts along the direction vector (2, 3), moves an object from A(1, 3) to B(3, 7). Find the work done if the given units are metres.
*Monday, February 23, 2015 at 10:38am*

**Vectors Math**

Find the area of a triangle with vertices A(1, 3, 5), B(-2, -3, -4) and C(0, 3, -1).
*Monday, February 23, 2015 at 10:37am*

**Vectors Math**

The magnetic force (Vector FM)on a particle in a magnetic field is found by Vector FM = Vector I × Vector B, Vector I is the charge multiplied by the velocity of a charged particle and Vector B the strength of the magnetic field, in Tesla (T). An electron accelerates ...
*Monday, February 23, 2015 at 10:13am*

**Vectors Math**

For any vector find Vector a × Vector a. Explain your result.
*Monday, February 23, 2015 at 10:04am*

**math**

bob wants to cover the floor of a room 3m wide and 4m long by squared tiles. if each square tile is of side 0.5m,then find the number of tiles required to cover the floor of the room.
*Monday, February 23, 2015 at 9:07am*

**Math**

It's an irregular hexagon. The base of the hexagon is 12m, the length of one side is 9m, the length of the other sides are 5m, and 4m, the width of the other sides are 7m and 5m. What is the area of the hexagon ?
*Monday, February 23, 2015 at 8:53am*

**Math**

Sue deposited $3000 in a savings account earning 2% interest over 8 years, what was the total interest Sue earned?
*Monday, February 23, 2015 at 7:30am*

**Math**

Diameter of a car wheel is 1.05 meter If car drives for 3.3 K.m how many rotations wheel rotates ?
*Monday, February 23, 2015 at 7:04am*

**math**

A rally car traveled for 2 hours 40 minutes at an average of speed pf 120km/h. The car consumes an average of 1 liter of fuel for every 4 kilometers. A liter of the fuel costs shillings 59. Calculate the amount of money spent on fuel. Distance = 2 2/3h * 120km/h = 320km &...
*Monday, February 23, 2015 at 2:08am*

**math**

have orange juice and mango juice. i have 0.5 liters more orange juice than mango juice. which could be the amounts of juice that I have?
*Monday, February 23, 2015 at 1:23am*

**dice probability (math)**

if a pair of fair dice is rolled, what is the probability that we roll a total of five if we are given that the total is less than nine?
*Monday, February 23, 2015 at 12:26am*

**Vectors Math**

For any vector Vector a find Vector a × Vector a. Explain your result.
*Sunday, February 22, 2015 at 11:30pm*

**Vectors Math**

If vector Vector a = (3, 2, 9), and Vector b = (-4, 7, 2), find Vector a × Vector b.
*Sunday, February 22, 2015 at 11:29pm*

**Vectors Math**

The magnetic force (Vector FM)on a particle in a magnetic field is found by Vector FM = Vector I × Vector B, Vector I is the charge multiplied by the velocity of a charged particle and Vector B the strength of the magnetic field, in Tesla (T). An electron accelerates ...
*Sunday, February 22, 2015 at 11:21pm*

**Vectors Math**

For any vector Vector a find Vector a × Vector a. Explain your result.
*Sunday, February 22, 2015 at 11:20pm*

**Math**

a pair of dice is rolled, what is the probability of rolling a total of if we are given that the total is less than
*Sunday, February 22, 2015 at 10:55pm*

**Math**

it cost $2 to buy a raffle ticket. if there are 500 tickets sold, and there is one first prize of $250, three second prizes of $100, and five third prizes of $50, what is the expected value of this raffle?
*Sunday, February 22, 2015 at 10:49pm*

**math**

A point (-5, 4) is mapped onto (-1, -1) by a translation. Find the image of (-4, 5) under the same translation.
*Sunday, February 22, 2015 at 10:48pm*

**Vectors Math**

If Vector a = (2, 2k), Vector b = (4, -k), are perpendicular, solve for k with full solutions?
*Sunday, February 22, 2015 at 10:26pm*

**Vectors Math**

If Vector a = (5, -5, 3), Vector b = (1, 2, 3), determin proj (Vector a onto Vector b). (Full solutions)
*Sunday, February 22, 2015 at 10:23pm*

**Vectors Math**

If Vector a = (5, -5, 3), Vector b = (1, 2, 3), determin proj (Vector a onto Vector b).
*Sunday, February 22, 2015 at 10:23pm*

**math**

A band made a profit of 352.00 and sold 116 tickets and spent 25.00on advertising. How much was the cost of one ticket? T=the cost of one ticket. 116T-25.00=352.00 116T+25.00=+25.00 116T=377.00 116/116T=377.00/116 T=3.25
*Sunday, February 22, 2015 at 9:12pm*

**Math**

Mr Jenkins distributed 30 fliers out of 40 fliers. What percent of the total amount of fliers did he distributed
*Sunday, February 22, 2015 at 9:09pm*

**Math**

The ratio of boys to girls in the checkers club at one school is 2:3. the number of club members is more than 20 and fewer than 30. how many club members are there?
*Sunday, February 22, 2015 at 9:09pm*

**Vectors Math**

1. AF in terms of AB 2. AE in terms of AB and BC 3. BC in terms of AF and EC Jhiska doesnt allow me to post urls so can you please search in "Intro to Vectors MCV4U U1A2 Assignment Question1 Support" on youtube which shows the diagram needed to answer this question.
*Sunday, February 22, 2015 at 9:06pm*

**Math vectors**

1. AF in terms of AB 2. AE in terms of AB and BC 3. BC in terms of AF and EC Jhiska doesnt allow me to post urls so can you please search in "Intro to Vectors MCV4U U1A2 Assignment Question1 Support" on youtube which shows the diagram needed to answer this question.
*Sunday, February 22, 2015 at 9:05pm*

**Math vectors**

1. AF in terms of AB 2. AE in terms of AB and BC 3. BC in terms of AF and EC Jhiska doesnt allow me to post urls so can you please search in "Intro to Vectors MCV4U U1A2 Assignment Question1 Support" on youtube which shows the diagram needed to answer this question.
*Sunday, February 22, 2015 at 9:05pm*

**math**

you are making a fence of your garden the length is five less than two times the width write a polynomial that represents the perimeter of the garden write a polynomial that represents the area of the garden
*Sunday, February 22, 2015 at 8:45pm*

**Math**

Find the volume of the solid that is obtained when the region bounded by the curves x=9-y^2, x=y^2+1 and y=0 is rotated about the line y=-2. (the upper shape above the x-axis)
*Sunday, February 22, 2015 at 8:37pm*

**math**

it's an irregular hexagon. the base of the hexagon is 12m, the length of one side is 9m, the length of the other sides are 5m, and 4m, the width of the other sides are 7m and 5m
*Sunday, February 22, 2015 at 8:37pm*

**Math**

Rafi is upgrading his cell phone and monthly service plan. Triax Cell offers a new phone for $50 and unlimited service for a monthly fee of $40. CellUR offers a new phone and unlimited service for a monthly fee of $50. After how many months will the cost of the two phones and ...
*Sunday, February 22, 2015 at 8:22pm*

**Math**

The position vectors for points P and Q are 4 I + 3 j + 6 j + 6 k respectively. Express vector PQ in terms of unit vectors I, j and k. Hence find the length of PQ, in simplified surd form.
*Sunday, February 22, 2015 at 8:08pm*

**Business math**

Sarah and brad own and operate a small farm. They made $30,000 farming, $4,000 from an inheritance, $2,300 in interest on a bank account, and $3,600 in interest on tax-exempt municipal bonds. Compute their combined gross income. Do I add total? 39,900? Or do I add everything ...
*Sunday, February 22, 2015 at 7:28pm*

**math**

what is the area of a hexagon with sides 5m, 4m, 5m, 9m, 7m and 12m
*Sunday, February 22, 2015 at 7:16pm*

**math**

0.6 divided by (0.4 x 0.5)
*Sunday, February 22, 2015 at 7:14pm*

**math**

In a bag are three red marbles and three green marbles. If two marbles are drawn from the bag at the same time, what is the probability that both marbles will be red?
*Sunday, February 22, 2015 at 7:12pm*

**math**

I multiplied my number by 102,then subtracted 228. I then divided by 6.Finally I added 51. My result was 200. What number was I thinking of ?
*Sunday, February 22, 2015 at 6:50pm*

**finite math**

An urn contains 4 red, 6 white, and 3 blue marbles. Three marbles are selected at random and without replacement. What is the probability that one of each color is selected? Give your answer as a decimal number, with 3 decimal places.
*Sunday, February 22, 2015 at 5:53pm*

**Math Help!**

I apologize for all these questions but I really need to get them done fast so I appreciate if you tried to answer some of them! 1. Bill is saving money in an empty jar. The first day he puts in a certain amount of money. Every day after the first he puts in 2 more dollars ...
*Sunday, February 22, 2015 at 5:41pm*

**Vectors Math**

You will often see proj (Vector a onto Vector b) written as proj b⃗ a⃗ .Show that projb⃗ a⃗ =(a⃗ ⋅b⃗ b⃗ ⋅b⃗ )b⃗ .
*Sunday, February 22, 2015 at 4:47pm*

**math**

Problem 6-1 Bank Reconciliation The following information is available to assist you in preparing a bank reconciliation for Calico Corners on May 31, 2012: a. The balance on the May 31, 2012, bank statement is $8,432.11. b. Not included on the bank statement is a $1,250 ...
*Sunday, February 22, 2015 at 4:27pm*

**math vectors**

If Vector a = (2, 2k), Vector b = (4, -k), are perpendicular, solve for k with solutions?
*Sunday, February 22, 2015 at 4:15pm*

**Math vectors**

If Vector a = (5, -5, 3), Vector b = (1, 2, 3), determin proj (Vector a onto Vector b).
*Sunday, February 22, 2015 at 4:14pm*

**Math**

Every hour a clock chimes as many times as the hour. For example, the clock chimes 4 times at both 4:00 am and 4:00 pm. How many times does it chime from 4:00am through 11:00 pm of the same day including 4:00 am and 11:00 pm.? What is the proper way of doing this question ...
*Sunday, February 22, 2015 at 4:03pm*

**Math**

Molly is currently making 42000 a year her contract includes a 3% raise each year what is her salary for the next 5 years Current. 42000 After 1. 43260 After 2. 44558 After 3. 45895 After 4. 47272 After 5. 48690
*Sunday, February 22, 2015 at 4:02pm*

**math**

If a fowl is treated, probability of dying is 1/10 while if not treated the probability is 7/10 calculate the probability that, a fowl picked at random from the 36 fowl is (i) Treated with the drug and will die (ii) Not treated with the drug and will die (iii) Not treated with...
*Sunday, February 22, 2015 at 3:54pm*

**math**

Barry is getting an early start on this year's summer chores, he started painting his house already. Barry started out with 110 ounces of blue paint, 120 ounces of red paint, 150 ounces of white paint. Barry painted 4 EQUAL SIZED stripes on his wall: 1 blue stripe, 1 red ...
*Sunday, February 22, 2015 at 3:48pm*

**Math Vectors**

A plane is heading on a bearing of 200° with an air speed of 400 km/h when it is blown off course by a wind of 100 km/h from the northeast. Determine the resultant ground velocity of the plane. How did you get your answer?
*Sunday, February 22, 2015 at 3:35pm*

**Calc Math**

A plane is heading on a bearing of 200° with an air speed of 400 km/h when it is blown off course by a wind of 100 km/h from the northeast. Determine the resultant ground velocity of the plane. What was your solution to answering this problem?
*Sunday, February 22, 2015 at 3:35pm*

**Math**

Bill is saving money in an empty jar. The first day he puts in a certain amount of money. Every day after the first he puts in 2 more dollars than the amount he put in on the previous day. After 10 days he has put 200 dollars in the jar. How much money did he pit in the jar on...
*Sunday, February 22, 2015 at 3:25pm*

**Math check**

1. If LMNO is a parallelogram, and LM=2y-9 and NO=y-2, find the value of 'y'. Does y=7? 2. RSTV is a parallelogram. RT and SV intersect at Q. RQ=5x+1 and QT=3x+15. Find OT. Does QT=7? 3. RATS is a parallelogram. If angle s= (8x) and angle t=(7x) then find the value of...
*Sunday, February 22, 2015 at 3:22pm*

**Math**

1. Daniel wants to save at least 20 dollars by putting pennies in a jar daily. On first day, he puts one penny into the jar. The second day he puts 2 pennies into the same jar. On the nth day he pus n pennies into the same jar. Which day is the first day on which he has at ...
*Sunday, February 22, 2015 at 3:20pm*

**Math**

After dinner, three friends at a restaurant paid their bill and noticed a bowl of mints on the front counter. Sean took one-third of the mints but returned four because he had a momentary pang of guilt. Fred then took one-fourth of what was left but returned three for similar ...
*Sunday, February 22, 2015 at 3:17pm*

**Math**

A Mortar shell is fired with muzzle speed of 500ft/sec.Find the angle of elevation of mortar if the shell strikes a target located 1200ft away. What is the maximum height of the shell?
*Sunday, February 22, 2015 at 2:45pm*

**physics/chemistry**

how does one calculate the work done by a spherical bubble with radius r in a liquid with a surface tension of T. I understand for a cavity it is 8pi(r)T, would you just double it to get 16pi(r)T because there are 2 films? here's the math....2(4pi((r)+dr)^2 -4pir^2) for a ...
*Sunday, February 22, 2015 at 2:39pm*

**math**

4% on 185000 is what?
*Sunday, February 22, 2015 at 2:23pm*

**math**

A man who is 1.6 m tall is walking on the road at a constant speed of 1 m/s. There is (only) one lamp placed 3.2 m above the road. At a specific moment the man was just under the lamp. What will be the rate at which the length of his shadow will be changing after: a) 2 sec b) ...
*Sunday, February 22, 2015 at 12:47pm*

**math**

How would i expand (x-1)(x+2)-(x-3)^2
*Sunday, February 22, 2015 at 12:34pm*

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