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September 20, 2014

September 20, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

Q1.Navyug industriess Ltd.has annual requirement of 5,000 piece of brake cylinder for its popular brand of golf carts.each brake cylinder has a carrying cost of 25 per unit per year.the ordering cost per order is 800.calculate the total inventory cost for the following values ...
*Saturday, August 9, 2014 at 5:02am*

**math**

Q1.A cooperative store is interested in knowing whether there is any significant difference between the buying habits or male and female shoppers.samples of 14 males and 16 female shoppers gave the following information: male=62,38,43,79,77,23,11,52,33,41,70,49,69,43. ...
*Saturday, August 9, 2014 at 4:50am*

**math**

Q1.manufactures has a mean writing life of 40 pages with a SD of 2 pages. A purchasing agent selects a sample of 100 pens and them to test. The mean writing life for the same was 39 pages. Should the purchasing agent rejects the manufacturer’s claim?
*Saturday, August 9, 2014 at 4:39am*

**Math**

A beach cooler is 2.5 ft long, 1.5ft wide and 2 ft tall. How much ice is needed to fill the cooler at least 1/3 fill? What are the assumptions you make.
*Saturday, August 9, 2014 at 12:46am*

**math**

I have 10 question like this, anybody can show me this one how to do it. Simplify the following and give answers in scientific notation: 0.00320 x 450,000 / 90,000
*Friday, August 8, 2014 at 11:59pm*

**math**

Write the set of integers that satisfy the sentence: I had 10 question for this,anybody can show this one how to do it. 4 > n > 0
*Friday, August 8, 2014 at 11:54pm*

**math**

In a certain boy's camp, 30% of the boys are from New York State and 20% of these are from New York City.What percent of the boys in the camp are from New York City? a. 60% b. 50% c. 33% d. 10% e. 6% please answer and explain
*Friday, August 8, 2014 at 11:25pm*

**math**

If the number of square inches in the area of a circle is equal to the number of inches in its circumference,the diameter of the circle is a. 4 inches b. 2 inches c. 1 inches d. pi inches e. 2 pi inches please answer and explain
*Friday, August 8, 2014 at 11:22pm*

**Calculus-Math**

Complete the table. y = f(g(x)) u = g(x) y = f(u) y = (x + 18)^(-1/2) u = ? y=? Use the chain rule.
*Friday, August 8, 2014 at 9:41pm*

**Calculus-Math**

Complete the table. y = f(g(x)) u = g(x) y = f(u) y = (2x − 4)^7 u = y= This problem involves the chain rule of derivatives.
*Friday, August 8, 2014 at 9:29pm*

**math: optimising**

I cant figure out this homework question! I need to use optimisation to find the answer but I cant work it out :( There is a rectangular garden which is in need of fencing. Three sides of the 30m wide garden are already fenced. You own an additional 20m of suitable fencing and...
*Friday, August 8, 2014 at 9:03pm*

**math**

Mike gave Danny 4 more marbles than he already had. He now has 100 marbles. How many marbles did Mike give to Danny? I dont no the answer
*Friday, August 8, 2014 at 8:33pm*

**Math :)**

Amy can finish the homework in h hours (h>2), what fraction of the homework does she finish in 2 hours?
*Friday, August 8, 2014 at 8:28pm*

**math**

What line is perpendicular to the line y=2/3x+3?
*Friday, August 8, 2014 at 7:55pm*

**Math**

1. The quadratic equation -3x^2 – x = 10 has two real solutions. (true or False) Justify your answer. 2. If (2x – 3) (x + 5) = 8, then either 2x – 3 = 8 or x + 5 = 8. (True or False) Justify your answer.
*Friday, August 8, 2014 at 6:59pm*

**Math**

Cole and Efram are neighbors. Cole is 25 years old and, while they are not the same age, Efram's age contains the same 2 digits. The next time that will happen is in ____ years.
*Friday, August 8, 2014 at 6:08pm*

**Math**

Ken started the day with some money in is pocket. After he took some money out of his bank account, he had $4 more than twice the amount he started with. He then recieved a birthday present which doubled the amount of money he had with him. Ken now had $100 in his pocket. How ...
*Friday, August 8, 2014 at 5:54pm*

**MATH**

0.3X/4 = 0.5/3
*Friday, August 8, 2014 at 5:30pm*

**Math**

How do you expand and simplify (x-2)(x+2)?
*Friday, August 8, 2014 at 5:24pm*

**math**

The ratio of boys to girls in a class room was 9:8. Half of the girls left the classroom, and then there were 15 more boys than girls. A. How many children were in the classroom in the beginning? B. How many girls left the classroom?
*Friday, August 8, 2014 at 1:45pm*

**math**

While cataloging the software library students found that 3/8 of the available programs were in books or magazines. Of the remainder, 2/3 were on disk, and the rest were on cassette tape. If there were 50 programs on cassette tape, how many programs were there in the software ...
*Friday, August 8, 2014 at 1:20pm*

**math**

Example 3: Draw a number line and answer the following questions. (a) Which number will we reach, if we move 3 units to the right of –5? (b) Which number will we reach, if we move 4 units to the left of 3?
*Friday, August 8, 2014 at 12:54pm*

**math**

From a piece of pin in the shape of a square 6 inches on a side, the largest possible circle is cut out. Of the following, the ratio of the area of the circle to the area of the original square is closest in value to A. 4/5 B. 3/5 C. 2/3 D. 1/2
*Friday, August 8, 2014 at 11:40am*

**math**

1.Can a small child play with a fat child onthe see-saw?
*Friday, August 8, 2014 at 11:24am*

**math**

The approximate distance, s, in feet that an object falls in t seconds when dropped from a height is obtained by use of the tormula s = 16r^2. In 8 seconds, the object will fall A. 15384 feet B. 1024 feet C. 256 feet D. None of these
*Friday, August 8, 2014 at 10:53am*

**math**

The difference between two prime numbers is 1985. The larger of these two prime numbers is A. 2431 B. 2002 C. 1987 D. 1986
*Friday, August 8, 2014 at 10:40am*

**Math (fibonacci**

A sequence of numbers is called a Fibonacci-type sequence if each number (after for the first two) is the sum of the two numbers which precede it. For example, 1, 1, 2, 3, 5, 8 ... is a Fibonacci- type sequence. If 1985, x, y, 200 are four consecutive terms in a Fibonacci-type...
*Friday, August 8, 2014 at 10:04am*

**math challenge**

The number of seconds in 2 hours equals the number of minutes in A. 1 day B. 2 days C. 4 days D. 5 days
*Friday, August 8, 2014 at 9:55am*

**math**

The smallest possible number of Mondays that can occur during a period of 45 consecutive days is A. 5 B. 6 C. 7 D. 9
*Friday, August 8, 2014 at 9:44am*

**math**

have 10 boxes each box contains 50 peices and we're selling for 8.00 per box. If I had to repackag them into 20 pieces each how much would I sell the repacked boxes for ? And how much for the quantity ?
*Friday, August 8, 2014 at 9:22am*

**Algebra**

math test scores are 68 ,78,90and 91 what is the lowest score you can earn on the next test and still achieve an average of at least 85
*Friday, August 8, 2014 at 3:21am*

**math**

If the circumference of a circle is the same as the perimeter of the square with a side as 4 pi in, what is the area of the circle in square inches?
*Friday, August 8, 2014 at 1:06am*

**Math 221**

Need help please explain how to get the answers for these two factoring problems and for the second problem with the "ac method". 2a^2+1+3a 15x^2+31x+2
*Friday, August 8, 2014 at 12:06am*

**Math 221**

Need help please explain how to get the answers for these two factoring problems and for the second problem with the "ac method". 2a^2+1+3a 15x^2+31x+2
*Thursday, August 7, 2014 at 11:29pm*

**Math**

Are these times a. m or p. m. 9 minutes to 12 noon 8 minutes to midnight
*Thursday, August 7, 2014 at 11:15pm*

**Math**

4:00 in the evening 10:00 during the day Are these times a. m. Or p. m.
*Thursday, August 7, 2014 at 11:11pm*

**Math**

Suppose a child is sitting 5 feet from the fulcrum. Where does a 175 pound adult need to sit for the seesaw to be balance?
*Thursday, August 7, 2014 at 10:52pm*

**Math 221**

9w-w^3 I need someone to explain step by step how do I factor this problem
*Thursday, August 7, 2014 at 10:40pm*

**Math**

The list below contains the 6 factors of which two-digit number? 6, 2, 9, 3, 1 ______
*Thursday, August 7, 2014 at 9:28pm*

**Math 221**

9w-w^3 I need someone to explain how do I factor this problem
*Thursday, August 7, 2014 at 9:22pm*

**math**

The ratio of boys to girls in a class room was 9:8. Half of the girls left the classroom, and then there were 15 more boys than girls. A. How many children were in the classroom in the beginning B. How many girls left the classroom?
*Thursday, August 7, 2014 at 8:41pm*

**math**

The base of a triangle is 11. The other two sides are integers and one of the sides is twice as long as the other. What is the shortest possible length of a side of the triangle?
*Thursday, August 7, 2014 at 8:05pm*

**math**

4. A board jumper makes an average standing jump of 8 feet. In how many jumps will he cover y yards? I got B for this question. A.3y/8 B.8/3y C.24y D.1/24y E.24/y
*Thursday, August 7, 2014 at 7:37pm*

**math**

3. A diamond ring valued at $7000 was insured at 80% of its value. What was the premium, if the rate was $6 per 1000? A.$3.36 B.$4.20 C.$33.60 D.$42.00 E.$336.00
*Thursday, August 7, 2014 at 5:31pm*

**math**

2. A grocer paid $2600 for secondhand delivery truck. At end of 4 1/2 years he was allowed $440 for it toward the purchase of a new truck. What was the average yearly amount of depreciation? A.$220 B.$450 C.$480 D.$550 E.$2200
*Thursday, August 7, 2014 at 5:20pm*

**math**

On Saturday, Alberto filled his right rear tire with air at the gas station around the block from where he lives. Three days later the tire pressure in that tire measured 26 psi (pounds per square inch). On the following Saturday, one week after he had originally filled the ...
*Thursday, August 7, 2014 at 4:35pm*

**math**

a quart is approximately sixty cubic inches. a cubic feet of water weighs approximately sixty pounds. therefore, a quart of water weighs, approximately
*Thursday, August 7, 2014 at 3:46pm*

**Math**

Simplify. (a) 2^3(5)^-2 =? (b) 2^-3/a^4 = 2^3a^4 =8a^4????
*Thursday, August 7, 2014 at 2:58pm*

**MATH(HELP)**

The ratio of guppies to angelfish in a shop was 2:3. The number of angelfish was 2/3 the number of gold fish. The shopkeeper decided to replace 1/4 of the guppies with some angelfish. The number of angelfish in the end. How many guppies were in the shop in the beginning?
*Thursday, August 7, 2014 at 2:44pm*

**math**

When modeling data we make ______ plot to help us visually determine whether a line or some other curve is appropriate or not.
*Thursday, August 7, 2014 at 2:10pm*

**MATH(HELP)**

The ratio of guppies to angelfish in a shop was 2:3. The number of angelfish was 2/3 the number of gold fish. The shoe keeper decided to replace 1/4 of the guppies with some angelfish. The number of angelfish she added was equal to the number of the guppies she replaced. There...
*Thursday, August 7, 2014 at 2:00pm*

**math**

On a plane trip, baggage over 41 pounds is charged at the rate per pound of 1% of the one-way fare. The charge for a bag weighing 52 pounds on a trip where the one-way fare is $98 is:
*Thursday, August 7, 2014 at 1:37pm*

**math**

At the beginning of the summer molly decided to add a little money into her sayings account every week. After seven weeks her account had $175. At the end of 15 weeks her account had $375. Assume that she put the same amount of money into her account every week and will ...
*Thursday, August 7, 2014 at 12:46pm*

**Math**

In a program,class 7 students planted as many trees as their number in class. If total planted trees =144.Find how many students were there ?
*Thursday, August 7, 2014 at 10:52am*

**math**

two points A and B 80 ft. apart lie on the same side of a tower and in a horizontal line through its foot. if the angle of elevation of the top of the tower at A is 21 degree and B is 46 degree, find the height of the tower.
*Thursday, August 7, 2014 at 6:33am*

**MATH**

At one college, GPA’s are normally distributed with a mean of 2.9 and a standard deviation of 0.6. Find the 70th percentile.
*Thursday, August 7, 2014 at 5:10am*

**math**

12.5= 3/k how do u solve k?
*Thursday, August 7, 2014 at 4:02am*

**Math **

A Circle has an area of 25 pie centimeter squared.If one side of the square is the same length as the radius of the circle,what is the perimeter of the Square? F 20 cm G 25 cm H 50 cm J 75 cm K 100 cm
*Thursday, August 7, 2014 at 2:44am*

**Math **

A rectangle has a length of 6 cm in an area of 24 cm². If the radius of a circle is as long as the width of the rectangle ,what is the circumference of the circle?
*Thursday, August 7, 2014 at 2:40am*

**Math **

A square measures 12 cm x 12 cm and is divided into four equal squares.If equal circles inscribed within each of the four squares, what is the circumference of each circle ?
*Thursday, August 7, 2014 at 2:38am*

**Math**

A rectangle has a length of 6 inches and an area 18 inches. If the radius of the circle is equal to the width of the rectangle what is the area of the circle?
*Thursday, August 7, 2014 at 1:47am*

**Math**

5[5m-(m+8)]> -4(m-1) Solve
*Thursday, August 7, 2014 at 12:49am*

**math**

If x = 1/x^2, then 2 + 3 = a. 13/36 b. 1/5 c. 5/6 d. 1/8 e. 5/13 please answer and show work
*Thursday, August 7, 2014 at 12:01am*

**math **

44-(4x+5)< 2(x+2)+x solve
*Wednesday, August 6, 2014 at 11:55pm*

**math**

The approximate distance,S, in feet that an object falls in t seconds when dropped from a height can be found by using the formula S = 16t^2.In 8 seconds, the object will fall a. 256 feet b. 1,024 feet c. 1,084 feet d. 2,048 feet e. 15,384 feet please answer and explain
*Wednesday, August 6, 2014 at 11:36pm*

**Math **

1/4(8y+4)-18<-1/2(4y-6) Solve
*Wednesday, August 6, 2014 at 11:34pm*

**Math- urgent**

A golf ball can travel 170 mph. This is 10/7 times the fastest speed recorded for a hockey puck. What is the record speed for a hockey puck? Make and equation and solve.
*Wednesday, August 6, 2014 at 10:18pm*

**math**

A jar contains 20 marbles: 4 red, 6 white and 10 blue. If you remove 1 marble at a time, randomly, what is the minimum number that you must remove to be certain that you have at least 2 marble of each color? I guessed the answer was 18 and it was correct but I don't know ...
*Wednesday, August 6, 2014 at 9:13pm*

**math**

what is thevolume of a rectangular prism with side lengths 15.8m,24.5m and 4.2m? round to the nearest cubic meter.
*Wednesday, August 6, 2014 at 8:22pm*

**Calculus-Math**

Complete the table without using the Quotient Rule. Function y=2x^(7/2)/x Rewrite y= Differentiate y'= Simplify y' =
*Wednesday, August 6, 2014 at 7:54pm*

**math**

Nia found the following prices for shorts:$25 $28 $19 $20 $18 $19 $32 $29.find th mean,median,and mode for the prices
*Wednesday, August 6, 2014 at 7:37pm*

**Math**

John has 5 computer games. Julian has twice as many computer games as John. How many computer games do they have in all?
*Wednesday, August 6, 2014 at 7:26pm*

**summer math **

1.Sharon drove 188.3 miles to see a softball game. If she was driving for 3 1/2 hours,what was her average rate of speed? 2.Kat worked 23 hours last week babysitting. She earned $126.50. What was her rate of pay?
*Wednesday, August 6, 2014 at 6:51pm*

**math**

I have some problems with these questions: 3. A hat was priced at $10.80. During a sale, the hat sold for $9.18. What was the rate of discount on the hat? 4. A man's tax on his home is $1,952. The tax rate is $3.20 per $100 of assessed value of the home? I think I need to ...
*Wednesday, August 6, 2014 at 6:36pm*

**math**

A plot of land has a side length of 47ft.What is the perimeter?
*Wednesday, August 6, 2014 at 6:28pm*

**math test review**

7. Given that w=7r+6r+5r+4r+3r. Which of the terms listed below may be added to w to the resulting sum will be divisible by 7 for every positive integer r? A.7r B.6r C.5r D.4r E.3r
*Wednesday, August 6, 2014 at 5:52pm*

**math**

A refrigerator was marked down in a price from $249.50 to $199.60 during a sale. What was the rate of discount?
*Wednesday, August 6, 2014 at 5:33pm*

**math corrections**

I got a few questions wrong and i would like some explanations on these question: 2. A pair of pants sells for $6 more than 75% of its price of the pants? A.$12 B.$18 C.$20 D.$24 E.$36 Choice E is wrong. 4. What is the wall thickness, inches, of a tube with an outer diameter ...
*Wednesday, August 6, 2014 at 5:26pm*

**math**

3.6 + 1.9
*Wednesday, August 6, 2014 at 3:32pm*

**math**

Ahmed earns $1.50 for every video game he sells. When he sells one carton of 30 video game, he earns an additional $10. What is the minimum number of video games he has to sell in order to earn $450?
*Wednesday, August 6, 2014 at 3:11pm*

**Math**

Explain how knowing that that 5 divided by 8 equals = .625 helps you write the decimal for 4 5/8
*Wednesday, August 6, 2014 at 3:06pm*

**Math**

The question says When the square of a certain number is diminished by 5 times.. What does diminished by mean?
*Wednesday, August 6, 2014 at 10:50am*

**math**

x square plus 12X plus 4 equals 0 what is the value of x
*Wednesday, August 6, 2014 at 9:04am*

**math**

2012 32 32 is divided by 7 then find the remainder
*Wednesday, August 6, 2014 at 8:48am*

**math**

please find it's factors 2x^3+5x^2+4x+1 thanks
*Wednesday, August 6, 2014 at 6:16am*

**Math**

One model of Earth's population growth is , where t is measured in years since 1990, and P is measured in billions of people. Which of the following statements are true?
*Wednesday, August 6, 2014 at 1:03am*

**math**

A student worked V hours on Monday W hours on Tuesday X hours on Wednesday Y hours on Thursday and Z hours on Friday. What is the average (arithmetic mean)
*Wednesday, August 6, 2014 at 12:13am*

**Math**

Given f(x) = 2x 4 - 3x 2 - 8x + 4, what is f(3)? A. 88 B. 115 C. 131 D. 133 A?
*Tuesday, August 5, 2014 at 11:27pm*

**math**

3-12/3-2-8/15
*Tuesday, August 5, 2014 at 11:15pm*

**Math**

According to the table, what is Ohman's T-Shirt Factory's profit at the profit maximizing point?
*Tuesday, August 5, 2014 at 10:34pm*

**Math 221**

I am trying to figure out how to Evaluate the polynomial resulting from step 1 using: P = $200 and r = 10%, and also with P = $5670 and r = 3.5% am trying to figure out where I start
*Tuesday, August 5, 2014 at 10:03pm*

**math**

Which of the following represents the zeros of the function g(x) = x 3 - 9x 2 + 2x + 48? A. x = –8, x = 2, and x = –3 B. x = 8, x = –2, and x = 3 C. x = 6, x = –4, and x = 9 D. x = –6, x = 4, and x = –9 I need help
*Tuesday, August 5, 2014 at 9:08pm*

**Math**

Arlan needs to create a box from a piece of cardboard. The dimensions of his cardboard are 10 inches by 8 inches. He must cut a square from each corner of the cardboard, in order to form a box. What size square should he cut from each corner, in order to create a box with the...
*Tuesday, August 5, 2014 at 8:37pm*

**Math**

An architect has allocated a rectangular space of 275ft^2 for a square dining room and a 14ft wide kitchen. Find both the width of the square dining room and the length of the entire rectangular space.
*Tuesday, August 5, 2014 at 8:31pm*

**Math**

The number of tickets sold each day for an upcoming performance of Handel,s Messiah is given by N(x)=-0.4^2+8.8x+10, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day?
*Tuesday, August 5, 2014 at 8:28pm*

**math hw**

42. Twenty minutes after a plane leaves the airport, it is reported to be 160 miles away. What average speed of the plane in the miles per hour?
*Tuesday, August 5, 2014 at 7:45pm*

**math hw**

An automobile party leaves at 7:55 A.M., and arrives at its destination 15 miles away at 8:15 A.M. What was the average rate on this trip (in M.P.H.)?
*Tuesday, August 5, 2014 at 7:37pm*

**math hw**

40. How far (in miles) does a car travel when its average rate is 35 miles per hour and it travels for 3 hours and 24 minutes?
*Tuesday, August 5, 2014 at 7:27pm*

**Math**

what does [-8 4] equal ? -3[ 0-1] [ 6 3] How do I do this ? Help please
*Tuesday, August 5, 2014 at 6:45pm*

**math**

For the car loan described, give the following information. A newspaper advertisement offers a $4,500 used car for nothing down and 36 easy monthly payments of $157.62. (a) amount to be paid
*Tuesday, August 5, 2014 at 6:28pm*

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