Thursday

October 2, 2014

October 2, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

If n is positive and n^2=57, between which two number does n lie? A.5 and 6 B.6 and 7 C.7 and 8 D.8 and 9 E.9 and 10
*Sunday, August 10, 2014 at 2:30pm*

**math**

35. If 1<6n<66, and n is a positive integer, what is the greatest possible value for n? A.9 B.10 C.11 D.12 E.13
*Sunday, August 10, 2014 at 2:28pm*

**math**

10.If the average of four positive integers is 12, what is the largest possie value of one of those integers? A.35 B.37 C.40 D.42 E.45
*Sunday, August 10, 2014 at 2:23pm*

**math**

4. How many positive integers less than 100 are divisible by 3,5,7? A.None B.One C.Two D.Three E.Four
*Sunday, August 10, 2014 at 2:22pm*

**math**

3. Nancy can make 5 bags per hour. Sue cna make 6 bags per hour, and Ned can make 12 bags per hour. If Nancy and Sue make 12 bags per hour, and then Ned joins them, how many minutes will it take them to make 149 bags? A.227 B.300 C.360 D.420 E.480
*Sunday, August 10, 2014 at 2:20pm*

**math**

In one year what percent of your time is spent in school? Year=365 days School year=180 days I know that the answer is a little bit over 50%, but I am not too sure about the exact answer.
*Sunday, August 10, 2014 at 1:27pm*

**Math**

A line passes through the points (-10,-4) and (-1,2). What is the slope of the line that passes through the two points?
*Sunday, August 10, 2014 at 1:01pm*

**Math**

expression that is equivalent to -6(x - 3).
*Sunday, August 10, 2014 at 12:06pm*

**math**

a piece of wire 12 meters long is cut into two pieces.one piece is bent into the shape of an equilateral triangle and the other into the shape of a circle.how should the wire be cut so that the combined area of the two figures is as small as possible?
*Sunday, August 10, 2014 at 11:55am*

**math**

how many different rectangles having an area of 81 square centimeters can you draw if the length and width have an integral value?
*Sunday, August 10, 2014 at 8:48am*

**Math**

find the volume of iron require to make an open box whose external dimensions are 36 cm * 25cm* 16.5 cm and 1.5 cm thick throughout. if 1 cm3 of iron weighs 8.5 grams, find the weight of the empty of box in kilograms..
*Sunday, August 10, 2014 at 3:05am*

**math**

What is the value of 4^5 + 4^5 + 4^5 + 4^5 + 4^5 + 4^5 + 4^5 + 4^5 + 4^5 + 4^5 + 4^5 + 4^5 ? a. 12 x 2^5 b. 24^5 c. 3 x 2^5 d. 4^60 e. 3 x 4^6 please answer and explain
*Sunday, August 10, 2014 at 1:55am*

**Math**

A car is going 50mi/h after 5s. The car is traveling 30mi/h about how long does it take the car to stop
*Saturday, August 9, 2014 at 11:04pm*

**Calculus-Math**

The speed S of blood that is r centimeters from the center of an artery is given below, where C is a constant, R is the radius of the artery, and S is measured in centimeters per second. Suppose a drug is administered and the artery begins to dilate at a rate of dR/dt. At a ...
*Saturday, August 9, 2014 at 10:17pm*

**Math: Optimising**

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 ...
*Saturday, August 9, 2014 at 7:57pm*

**math**

2^5/2 - 2^3/2
*Saturday, August 9, 2014 at 7:48pm*

**Calculus-Math**

Find d2y/dx2 in terms of x and y. x^2y^2-2x=3
*Saturday, August 9, 2014 at 7:01pm*

**Calculus-Math**

Find an equation of the tangent line to the graph at the given point. 3(x2 + y2)2 = 100(x2 − y2), (4, -2)
*Saturday, August 9, 2014 at 6:44pm*

**Calculus-Math**

The speed S of blood that is r centimeters from the center of an artery is given below, where C is a constant, R is the radius of the artery, and S is measured in centimeters per second. Suppose a drug is administered and the artery begins to dilate at a rate of dR/dt. At a ...
*Saturday, August 9, 2014 at 6:08pm*

**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
*Saturday, August 9, 2014 at 11:45am*

**math**

The second term of a GP is 81 and the fourth term is 9. Find, (i) the common ratio, (ii) the sum of the first terms, (iii) the sum to infinity.
*Saturday, August 9, 2014 at 11:29am*

**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*

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