Tuesday

September 30, 2014

September 30, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

(please explain with brief explanation) The sides of an equilateral triangle are shortened by 12 units,13 units and 14 units respectively and a right angled triangle is formed.Find the side of the equilateral triangle.
*Tuesday, September 2, 2014 at 4:33am*

**Math**

Manuel wants to build a rectangular pen for his animals. One side of the pen will be against the barn; the other three sides will be enclosed with wire fencing. If Manuel has 750 feet of fencing, what dimensions would maximize the area of the pen? a) Let w be the length of the...
*Tuesday, September 2, 2014 at 4:26am*

**math**

(please explain with brief explanation) two squares have sides p cm and (p+5) cms. the sum of theirs squares is 625 sq.cm. the sides of the squares are
*Tuesday, September 2, 2014 at 4:21am*

**math**

the sum of two irrational numbers multiplied by the larger one is 70 and their difference is multiplied by the smaller one is 12
*Tuesday, September 2, 2014 at 4:19am*

**math**

(please explain with brief explanation) The area of a rectangular field is 2000 sq.m and its perimeter is 180m. Form a quadratic equation by taking the length of the field as x and solve it to find the length and breadth of the field. the length and breadth are A) (205m, 80m) ...
*Tuesday, September 2, 2014 at 4:17am*

**Math**

A truck with 36-in.-diameter wheels is traveling at 55 mi/h. Find the angular speed of the wheels in rad/min, *hint convert miles to inches & hours to minutes How many revolutions per minute do the wheels make? • This question is 2 parts. I can't remember the formula ...
*Tuesday, September 2, 2014 at 4:06am*

**English**

Posted by rfvv on Monday, September 1, 2014 at 8:28am. Q: What can you do for the school? 1. I can clean the floor of my classroom. 2. I can clean the floor of the hallway of my classroom. 3. I can clean the stairs with a mop. 4. I can pick up trash on the flower pots and on ...
*Tuesday, September 2, 2014 at 2:10am*

**Math, Calculus**

The questions says it has 2 solutions. It wants me to find what x would be if cos(x)=-.49 and it is given that x is on the scale between 0 and 2pi. I know that cosine is the x value, and since cosime is negative in this case the two solutions need to be in the 2nd and 3rd ...
*Tuesday, September 2, 2014 at 1:29am*

**Math**

Here is the question : A Ferris wheel is 40 meters in diameter and boarded from a platform that is 5 meters above the ground. The six o'clock position on the Ferris wheel is level with the loading platform. The wheel completes 1 full revolution in 4 minutes. How many ...
*Tuesday, September 2, 2014 at 1:20am*

**Math**

Outside temperature over a day can be modelled as a sinusoidal function. Suppose you know the high temperature for the day is 87 degrees and the low temperature of 63 degrees occurs at 5 AM. Assuming t is the number of hours since midnight, find an equation for the temperature...
*Tuesday, September 2, 2014 at 1:13am*

**Math **

Pythagoren theorem: a= -5 b= -7 c=?
*Tuesday, September 2, 2014 at 12:48am*

**Physics, Math**

A typical volume of a modern hot air balloon is 2500 cubic metres, and a typical maximum temperature of the hot air is 120 degrees Celsius. Given these figures, and an outside air temperature and density of 15 ∘C and 1.225 kg/m3 respectively, compute the maximum mass (in...
*Tuesday, September 2, 2014 at 12:41am*

**math**

Area of a rectangle = 221 m2; width = length = ? Should the answer be 13 or or 26
*Tuesday, September 2, 2014 at 12:03am*

**math homework**

8'5/12+11'1/4
*Monday, September 1, 2014 at 11:16pm*

**math**

write 4% as a fraction form
*Monday, September 1, 2014 at 11:02pm*

**Math**

Find the hypotenuse of the triangle using pythagoren theorem when given the point (4,-3)
*Monday, September 1, 2014 at 10:57pm*

**Math**

What is... 4,078 rounded to the nearest thousand? 2,093 rounded to the nearest thousand?
*Monday, September 1, 2014 at 10:15pm*

**Math**

What is 5,210 rounded to the nearest hundred? 90 rounded to the nearest hundred?
*Monday, September 1, 2014 at 10:14pm*

**Math**

Why does Zara have a good driving record?
*Monday, September 1, 2014 at 9:46pm*

**Math**

Find the hypotenuse of the triangle using pythagoren theorem when given the points a) (4,-3) b) (2,3)
*Monday, September 1, 2014 at 9:33pm*

**math**

use only the 6,+,-,x,divided,and = keys on a calculator to get the display to say 7. you can use these keys as many or as few times as you need,but you can't use any other keys. Record your way
*Monday, September 1, 2014 at 8:38pm*

**Math**

The initial amount of sugar in fermenting a batch of beer is 5.5 grams. Over time the sugar decreases at a rate of 0.1grams per day. a.What is the amount of sugar that remains after 7 days? 23 days? - I got: 5.5-0.1x= A - 5.5-0.1(7)= 4.8 - 5.5-0.1(23)= 3.2 b. If A represents ...
*Monday, September 1, 2014 at 8:19pm*

**Business Math**

Treasure Mountain International School in Park City, Utah, is a public middle school interested in raising money for next year's Sundance Film Festival. If the school raises $2,989 and invests it for 1 year at 3% interest compounded annually, what is the APY earned? Please...
*Monday, September 1, 2014 at 8:17pm*

**Math**

64% out of 100 ? 75% of 60 ?
*Monday, September 1, 2014 at 7:15pm*

**Math **

4 divided by 1/2 ?????? 1/4 divided by 1/3 ????? 3 3/4 divided by 1/3 ???? Thank you to everyone who has been helping me!!
*Monday, September 1, 2014 at 6:56pm*

**Math**

Hi everyone. I have a question, if I have 690 divide by 70 it would be 9 R60 right? Okay so if it's 9 remainder 60 then what would the answer be if I had to round it to the nearest hundredth? Thanks guys!
*Monday, September 1, 2014 at 6:54pm*

**math**

I need to find the original sale price and the new sale price when thr markdowns percent is 12% and the amount of markdown is $1.20
*Monday, September 1, 2014 at 6:35pm*

**Math - Please Check My Answer**

Please help me with the following: Find the greatest possible error for each measurement. 4 1/2 oz A. 1/4 oz B. 2 1/2 oz C. 1 oz D. 2 1/4 oz I know it is not B(I got it wrong.), but I think it is A. Is this correct? Please help me by checking my answer. Any help is appreciated...
*Monday, September 1, 2014 at 6:33pm*

**Math**

The base of a hill is -30 feet below sea level .,The top of the hill is 200 feet higher .What is the elevation of the top of the hill . Plz show me how to get the answer its confusing
*Monday, September 1, 2014 at 6:18pm*

**Math**

While getting dressed for school early one morning, the light in Toni's bedroom burned out. Toni knew he had plenty of clean socks in his drawer, but none of them were matched. He had 24 white socks and 6 blue socks. What is the probabilty of Toni finding 2 white socks or ...
*Monday, September 1, 2014 at 6:02pm*

**Math Proof**

Let x and y be real numbers. Then x=y if and only if abs(x-y)< epsilon for every epsilon>0
*Monday, September 1, 2014 at 6:01pm*

**math**

Obama bought a pair of shoes at 20% discount.If he saved $700,calculate: the original price of the pair of shoes the sale price of the pair of shoes
*Monday, September 1, 2014 at 5:40pm*

**Math**

1/6 + 1/3= 2/10 + 4-5= 3/4 - 3/8= 4/7 - 2/14=
*Monday, September 1, 2014 at 5:19pm*

**Math **

Brandy plans to frame a picture with a sheet of construction paper. Her picture is 8 inches wide and 13 inches long. She wants the frame to extend 1 inch beyond the picture on all sides l. How wide and long should the frame be? What is the perimeter of her picture and of the ...
*Monday, September 1, 2014 at 4:36pm*

**Math**

While getting dressed for school early one morning, the light in Toni's bedroom burned out. Toni knew he had plenty of clean socks in his drawer, but none of them were matched. He had 24 white socks and 6 blue socks. What is the probabilty of Toni finding 2 white socks or ...
*Monday, September 1, 2014 at 4:32pm*

**math**

A recipe that makes 4 servings calls for 3/4cups of apple juice and 2/3 cup of cranberry juice.How many cups of juice are there per ?
*Monday, September 1, 2014 at 4:21pm*

**Accounting/Math/Exchange rates**

1. Indicate how each of the following international transactions is entered into the U.S. balance of payments with double-entry bookkeeping: a. A U.S. resident imports $500 worth of merchandise from a U.K. resident and agrees to pay in three months. b. After the three months, ...
*Monday, September 1, 2014 at 4:12pm*

**Math Proof**

Prove that for all integers n > or = 1 and all real numbers x subscript 1, x subscript 2,...., x subscript n. absolute value of (x subscript 1+ x subscript 2+...+ x subscript n) <or= abs(x subscript 1) + abs( x subscript 2)+..+ abs(x subscript n) I know how to do the ...
*Monday, September 1, 2014 at 4:06pm*

**Math**

(9n^4)^(1/2)= 3n??
*Monday, September 1, 2014 at 2:18pm*

**math**

if (3,21) lies on the graph of f, then f()= what?
*Monday, September 1, 2014 at 2:01pm*

**Math**

Simplify. ((3x+6)/(x^2-9))/((6x^2+12x)/(4x+12)) Is it... 2/x(x-3) ??
*Monday, September 1, 2014 at 1:54pm*

**math**

The area of a rectangle is 77 yd2 , and the length of the rectangle is 10 yd less than three times the width. Find the dimensions of the rectangle.
*Monday, September 1, 2014 at 1:36pm*

**math**

a man is 68 inches tall and casts an 8 foot shadow. A tree casts a 21 foot shadow, how tall is the tree
*Monday, September 1, 2014 at 1:29pm*

**Math**

Simplify. ((2-5m)/(m-9))+((4m-5)/(9-m)) Check this: (-9m+7)/(m-9)
*Monday, September 1, 2014 at 1:27pm*

**math**

how is the process used to multiply a fraction an a whole number similar to the process used to multiply two whole numbers?
*Monday, September 1, 2014 at 1:15pm*

**Math**

Simplify. 2x-5-(x-8)/(x+4) My answer: (2(x^2+x+6))/(x+4)
*Monday, September 1, 2014 at 1:15pm*

**Math**

A tank contains a certain amount of water. Each month half of the water in the tank evaporates and an extra liter of water is added. After 5 months, after the litres of water is added, there were 4 litres of water in the tank. How many litres were in the tank originally?
*Monday, September 1, 2014 at 12:55pm*

**math**

Factor completely: A. 3x^3/2 -9x^1/2 +6x^-1/2 B. x^3 y -4xy
*Monday, September 1, 2014 at 12:21pm*

**math**

dentify the solution(s) of the system of equations, if any. 3x-2y=6 5x=5-25y
*Monday, September 1, 2014 at 11:34am*

** math**

find the value: lim [4(3)^(1/2)-(cos x+sin x)^5]/(1- x>#/4 sin 2x)
*Monday, September 1, 2014 at 11:31am*

** math**

find the value: lim [4(3)^(1/2)-(cos x+sin x)^5]/(1- x>#/4 sin 2x)
*Monday, September 1, 2014 at 11:31am*

** math**

find the value: lim [4(3)^(1/2)-(cos x+sin x)^5]/(1- x>#/4 sin 2x)
*Monday, September 1, 2014 at 11:31am*

**MATH **

If P(x)=x^3 -3x^2 + 4 then P (-1)
*Monday, September 1, 2014 at 11:27am*

**math**

if P(x) = x^3 -3x^2 +4 then P(1)
*Monday, September 1, 2014 at 11:26am*

**math**

if f{x} =lim 1/n>0 1/(1+n sin^2(#x) then find the value of f(x) for all x.
*Monday, September 1, 2014 at 11:24am*

**math**

A college student earned $8900 during summer vacation working as a waiter in a popular restaurant. The student invested part of the money at 10% and the rest at 9%. If the student received a total of $831 in interest at the end of the year, how much was invested at 10%?
*Monday, September 1, 2014 at 10:53am*

**math**

Simplify (3x-2)^3 - (4x+5)^2 Can you show it step-by-step please
*Monday, September 1, 2014 at 10:50am*

**math**

evaluate the following polynomials -2x^2 + 5x -10 x=4
*Monday, September 1, 2014 at 10:45am*

**math**

evaluate the following polynomials 1. 3x^2 -2x +5 x = -2
*Monday, September 1, 2014 at 10:44am*

**math packet**

4*-3/5 divided -9/10
*Monday, September 1, 2014 at 10:06am*

**math**

the nth term of a sequence is represented by 3 x 22¨Cn
*Monday, September 1, 2014 at 10:05am*

**math packet**

maria has $1.05 in dimes and nickels. She has 6 more nickels than dimes. How many nickels does she have?
*Monday, September 1, 2014 at 9:44am*

**math**

At the school carnival, Carmen sold 3 times as many hot dogs as Shawn. The two of them sold 152 hot dogs altogether. How many hot dogs did Carmen sell?
*Monday, September 1, 2014 at 9:22am*

**math**

Identify the solution(s) of the system of equations, if any. -2x - 4y = 8 8y = -4x - 16
*Monday, September 1, 2014 at 9:06am*

**English**

Q: What can you do for the school? 1. I can clean the floor of my classroom. 2. I can clean the floor of the hallway of my classroom. 3. I can clean the stairs with a mop. 4. I can pick up trash on the flower pots and on the playing field. 5. I can win first place by playing ...
*Monday, September 1, 2014 at 8:28am*

**Math**

how to calculate if a student got 46 out of 60 how much he can get out of 40
*Monday, September 1, 2014 at 7:33am*

**math**

a distributor of apple juice has 5000 bottle in the store that it wishes to distribute in a month. from experience it is known that demand D (in number of bottles) is given by D = -2000p² + 2000p + 1700. the price per bottle that will result zero inventory is
*Monday, September 1, 2014 at 4:48am*

**math**

the hypotenuse of a right angled triangle is 20cm. the difference between its other two sides be 4cm. The sides are
*Monday, September 1, 2014 at 4:34am*

**math**

two squares have sides p cm and (p+5) cms. the sum of theirs squares is 625 sq.cm. the sides of the squares are
*Monday, September 1, 2014 at 3:59am*

**math**

The area of a rectangular field is 2000 sq.m and its perimeter is 180m. Form a quadratic equation by taking the length of the field as x and solve it to find the length and breadth of the field. the length and breadth are A) (205m, 80m) B) (50m, 40m) C) (40m, 50m) D)None
*Monday, September 1, 2014 at 3:36am*

**math**

A rectangle is twice as long as it is wide. Its perimeter is 60cm. find its length and width.
*Sunday, August 31, 2014 at 11:10pm*

**math**

A 12 qrt. cooling system is checked and found to be filled with a solution that is 40 % antifreeze. The desired strength of the solution is 60% antifreeze. how many quarts of solution need to be drained and replaced with pure antifreeze to reach the desired strength.
*Sunday, August 31, 2014 at 11:07pm*

**math**

regular milk has 4% butterfat. How many litres of regular milk must be mixed with 40 L of milk with 1% butterfat to have milk with 2% butterfat?
*Sunday, August 31, 2014 at 11:03pm*

**Math**

The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells the dinners at an 80% markup based on cost. They decided to offer a $1.00-off ...
*Sunday, August 31, 2014 at 10:57pm*

**math**

you owe $3 to each of your six friends . Represent the total amount you owe as an integer I know the answer is $18 but I wondering how u get can someone please show me plz
*Sunday, August 31, 2014 at 9:19pm*

**Math - Please Check My Answers**

Please help me with the following two problems: Find the greatest possible error for each measurement. 512 m A. 0.5 m C. 0.5 cm B. 5 m D. .005 cm I think the answer is A. Is this correct? Find the greatest possible error for the given measurement if it is to the nearest 10 ...
*Sunday, August 31, 2014 at 7:55pm*

**Math plz check if correct**

In multiplication, if one term is negative and one term is positive, the result will always be ______. A. equal to zero B. negative C. inverted D. positive my answer is A
*Sunday, August 31, 2014 at 6:05pm*

**Math check see if i;m coorrect**

In division, a problem includes a divisor, a dividend, and a(n) ______. A. product B. sum C. expression D. quotient My answer is b
*Sunday, August 31, 2014 at 5:44pm*

**Math**

Solve the following equations for the variable indicated. Please correct me if I'm wrong! 1. I=Prt for P Answer: I/P=rt 2. Solve C= 2ðr for r. Answer: C/r=2ð
*Sunday, August 31, 2014 at 3:52pm*

**Math **

Write the algebraic expressions for the following. Please check and correct me if I'm wrong!! 1. 3 less than 5 times a number. Answer: 5x-3 2. 18 fewer than half a number. Answer: 1/2x-18 3. 3 more than the quotient of a number and 2. Answer: x/2+3 4. 4 times the ...
*Sunday, August 31, 2014 at 3:38pm*

**Math Compounded daily**

$1450 was invested by Karla at 12% for 1 years compounded daily. How much did Karla have at the end of the investment?
*Sunday, August 31, 2014 at 3:09pm*

**Math**

How do you solve 2y-5x=10 using the dual intercept method? I have to solve for X int and y int on a graph. Please help
*Sunday, August 31, 2014 at 2:22pm*

**summer math hw **

one circle has a diameter of 10 inches. a second circle has a diameter that is twice the diameter of the first circle What is the ratio of the area of the smaller circle to the larger circle
*Sunday, August 31, 2014 at 2:01pm*

**math**

How to simplify (2÷m+3)+(1÷m) and how to simplify [2÷(x+1)(x+2)+3÷(x+2)(x+3)]
*Sunday, August 31, 2014 at 5:50am*

**Calculus-Math**

The endpoints of a movable rod of length 1 m have coordinates (x, 0) and (0, y) (see figure). The position of the end on the x-axis is given in the equation below, where t is the time in seconds. x(t) = 1/8 sin(πt/4) (c) Find the speed of the y-axis endpoint when the x-...
*Saturday, August 30, 2014 at 10:50pm*

**Math**

Identify each data source as primary or secondary. State one advantage or each source of data. a) A researcher interviewed 10 students about their study habits - primary b) A sporting goods company searched on the internet for data on how Canadians spend their leisure time - ...
*Saturday, August 30, 2014 at 9:11pm*

**Math - More Precision and Significant Digits**

Please help me with the following problems: 3. Choose the more precise measurement. 6 cm or 2.5 cm I think it is 2.5 cm. Is this correct? 7. Choose the less precise measurement and explain why it is less precise. 2.8 mm or 3.79 mm I think the answer is 3.79 mm. Is this correct...
*Saturday, August 30, 2014 at 5:33pm*

**math**

1. Give an example of an open equation. 2. How can you use an equation to make a prediction from a pattern ?
*Saturday, August 30, 2014 at 5:20pm*

**Math - Precision and Significant Digits**

Please help me with the following: Find each product or quotient. Use significant digits. 0.0505m x 665m A. 33.6 m^2 B. 33.58 m^2 C. 33.50 m^2 D. 3.582 m^2 I think the answer is A. Is this correct? Please help me by checking my answer. Any help will be appreciated!! :) P.S.: ...
*Saturday, August 30, 2014 at 5:07pm*

**math**

Lexi and Maria had $250 altogether. After Lexi spent 2/5 of her money and Maria spent $40, they had the same amount of money left. How much did Lexi have in the beginning?
*Saturday, August 30, 2014 at 1:46pm*

**math**

a segment of late 94 cm has been rotated d degrees around a center zero what is the length of the rotated segment
*Saturday, August 30, 2014 at 1:45pm*

**Math**

A sum of Rs. 1360 has been divided among Atif, Babar and Aqeel such that Atif gets 2/3 of what Babar gets and Babar gets 1/4 of what Aqeel gets. Babar' s share is:
*Saturday, August 30, 2014 at 11:26am*

**Math**

Last week at a festival, a man sold 5 times as many tie-dyed T-shirts as silk-screened shirts. He sold 210 shirts altogether. How many tie-dyed shirts did he sell?
*Saturday, August 30, 2014 at 10:22am*

**Math**

In a bathroom, 5cm of rain falls from a shower. The volume of water that falls on 1.5 hectares of floor of bathroom t
*Saturday, August 30, 2014 at 9:43am*

**Math**

A classroom in a college is 15m long and 12m broad. If the sum of the areas of its floor and the ceiling is equal to the sum of the areas of 4 walls of classroom , the volume of the classroom is.
*Saturday, August 30, 2014 at 9:39am*

**math**

Jenny wanted to solve the quadratic equation x2 - 11x +18 = 0 by factoring. Which of the following equations would lead her to solve the given equation?
*Saturday, August 30, 2014 at 7:35am*

**math**

If 3 tan theta = 4, then evaluate : 3sintheta + 2costheta / 3sintheta – 2costheta
*Saturday, August 30, 2014 at 6:50am*

**math**

Show that (-2;-6) (2;-4) and (4;-3) are collinear
*Saturday, August 30, 2014 at 4:29am*

**math**

Ken is adding a ribbon border to the edge of his kite. Two sides of the kite measure 9cm, while the other two sides measure 17cm inches. How much ribbon does Ken need ?
*Saturday, August 30, 2014 at 12:55am*

**math**

flossie has $62.05. In quarters, she has 3 more than twice the number of half dollars, and 10 more dimes than quarters. how many of each coin does she have
*Saturday, August 30, 2014 at 12:54am*

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