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October 20, 2014

October 20, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math**

3 1/4 - 1 1/9 =
*Sunday, August 24, 2014 at 9:22pm*

**Math**

Two salesman Eman and Masood are paid a total of Rs. 550 per week by their employer. If Eman is paid 120 percent of the sum paid to Masood , how much is Masood paid per week?
*Sunday, August 24, 2014 at 9:18pm*

**Math**

9(s+4)^2-62(s+4)=7 Solve for s
*Sunday, August 24, 2014 at 6:01pm*

**math**

What is the slope of the budget line from trading with Friday (coconuts for fish)?
*Sunday, August 24, 2014 at 5:37pm*

**Math**

From 1990 to 2006, the population, p (in millions), of a large city can be modeled by p = 1.1(1.05)t, where t is the number of years since 1990.
*Sunday, August 24, 2014 at 5:09pm*

**Math**

A sheet of paper is 8 1/2 in wide and 11 in long. The sheet is printed with a margin 1 1/4 in. wide on all four sides. Find the perimeter of the printed part of the page. I got 34; I subtracted 11 with 1 1/4 and 8 1/2 with 1 1/4. I got 9 3/4 and 7 1/4. I added those and got 17...
*Sunday, August 24, 2014 at 3:58pm*

**Math**

A cabinet has shelves that are 12 1/2 in. apart. On one shelf, Katherine stacked a CD player that is 4 5/8 in/ high on top of an amplifier that is 6 3/4 in. high. How much space was left above the CD player? I got 1 1/4; I added 6 3/4 and 4 5/8 and got 11 2/8. Then I ...
*Sunday, August 24, 2014 at 3:37pm*

**math**

a number consists of two digits whose sum is 8.if 8 is added to the number its digits are reversed.find the number?
*Sunday, August 24, 2014 at 2:01pm*

**math**

in an examination,a student requires 40% of the total marks to pass. if Ru pa gets 185 marks and fails by 15 marks,find the total marks?
*Sunday, August 24, 2014 at 1:54pm*

**Math**

Bilawal can build a wall in 15 days and Bilal in 20 days. If the work on it together for 4 days , then the fraction of the work ?
*Sunday, August 24, 2014 at 1:46pm*

**Math**

Two salesman Eman and Masood are paid a total of Rs. 550 per week by their employer. If Eman is paid 120 percent of the sum paid to Masood , how much is Masood paid per week?
*Sunday, August 24, 2014 at 1:43pm*

**math**

A cylindrical gasoline tank is 50 ft high and has diameter 70 ft. How many gallons of gasoline will the tank hold if there are 7.5 gallons in 1 ft3 ?
*Sunday, August 24, 2014 at 1:07pm*

**math**

Kelly subtracted 2.3 from 20 and got 17.7. Explain why this answer is reasonable
*Sunday, August 24, 2014 at 12:54pm*

**Math**

Bilawal can build a wall in 15 days and Bilal in 20 days. If the work on it together for 4 days , then the fraction of the work ?
*Sunday, August 24, 2014 at 11:22am*

**math**

(A)Simplify: n 1 n-1 1. 2 . 25 --------------- n 50.50 2. n 4 n 1 2 - 6.2 --------------- n 2 2 .5 (B)solve for x (1 over 2) to the power x 1 =32
*Sunday, August 24, 2014 at 10:40am*

**Math (quadratic function)**

A fuel station sell, aproximately, 2140 liters of gasoline, per day, in which each liters costs 1,75 dollars. The owner observed that, reducing the price of the liter, occurs an increase in the volume of fuel sold, in the proportion of 20 liters sold per day for each cent ...
*Sunday, August 24, 2014 at 9:41am*

**math**

For which vAlues of x the following expressions not defined if all these expressions are real numbers 1. 2x-1 negative ------ 3x-2 2.square root of 2(x-7)
*Sunday, August 24, 2014 at 8:56am*

**Math**

Bilawal can build a wall in 15 days and Bilal in 20 days. If the work on it together for to days , then the fraction of the work ?
*Sunday, August 24, 2014 at 6:44am*

**Math**

Three employes had salaries of 1136,7636 and 11628 respectively. What percentage of the total salaries did the highest- paid employee get ?
*Saturday, August 23, 2014 at 10:17pm*

**The Curriculum**

Which of the following is not an effective instructional strategy to help children develop math concepts? A. Using collections of commonly found objects for them to explore and manipulate B. Encouraging children to come up with their own conclusions rather than giving them ...
*Saturday, August 23, 2014 at 9:38pm*

**Math**

Solve: + n =
*Saturday, August 23, 2014 at 9:20pm*

**math**

Use quadratic formula (3x/x-1)+(2/x)=4 the solution set is ( , )
*Saturday, August 23, 2014 at 9:17pm*

**math**

As of August 22, 2014 the ratio of wins to total games the Red Sox played is? First of all I need to know if I am right about how many games the red sox played. I am pretty sure that they played 161 games. Am I correct?
*Saturday, August 23, 2014 at 8:26pm*

**math**

10. Michelle will divide 39 herbal tea bags and 91 mint tea bags among gift boxes. Each gift box will have the same number of herbal tea bags and the same number of mint tea bags. What is the greatest number of gift boxes Michelle can make?
*Saturday, August 23, 2014 at 7:14pm*

**math**

8. How many different four digit numbers can be made from the digits 3,8,6, and 9 if each digit appears only once in the arrangement? Is the answer 10?
*Saturday, August 23, 2014 at 7:11pm*

**math**

14. If a equals 50% of b, then in terms of a 50% of 5b is equal to what?
*Saturday, August 23, 2014 at 7:04pm*

**math**

16. if (x^2-6x-16)/(x^2+8x+12)=2, what is the value of 4x?
*Saturday, August 23, 2014 at 12:32pm*

**math**

35. If b is a positive integer less than 400 and more than 100, then how many integer pairs (a,b) satisfy the equation a/b=2/9?
*Saturday, August 23, 2014 at 12:28pm*

**math**

15. What is the mathematical average of number of weeks in a year, seasons in a year, and the number of days in January? A.36 B.33 C.32 D.31 E.29
*Saturday, August 23, 2014 at 12:17pm*

**Math**

Two salesman Emaan and Masood are paid a total of Rs 550 per week by their employer. If Emaan is paid 120 percent of the sum paid to Masood , how much is Masood paid per week.
*Saturday, August 23, 2014 at 11:12am*

**math**

the integral from -2 to 1 of 1/(x^2 +4x+13)
*Saturday, August 23, 2014 at 8:20am*

**Math**

Solve the equation: 4/3y+5/2y = 1
*Saturday, August 23, 2014 at 1:18am*

**math**

A flagpole is supported by a wire that is 5m long. The wire is pegged 2.5m from the foot of the pole. Find the height of the pole
*Saturday, August 23, 2014 at 12:44am*

**math**

Mason brought 18 red pencils to school. He brought 4 times as many erasers with him. How many erasers did Mason bring to school? Let M = how many erasers 18x4=M M=42
*Friday, August 22, 2014 at 6:31pm*

**math**

7. What area remains when the area of a square with side 3 is subtracted from the area of circle with radius 2?
*Friday, August 22, 2014 at 6:31pm*

**Math percentage (Money problem tax, discount)**

After 15% off, the book price becomes $26, what was the original price of the book? Round to the nearest cent. I had $29.9 but it was wrong :(
*Friday, August 22, 2014 at 6:30pm*

**math**

41. It takes Craig 20 minutes to type n pages. At these rates, how many hours will it take him to type 100 pages? All i know is 20/n
*Friday, August 22, 2014 at 6:27pm*

**math**

35. If b is positive integers less than 400 and more than 100, then how many integer pairs (a,b) satisfy the equation a/b=2/9?
*Friday, August 22, 2014 at 6:24pm*

**math**

24% of a number is 45, what is the number? Express your answer as a decimal.
*Friday, August 22, 2014 at 5:23pm*

**math**

calculate the upper limit for the definite integral from -2 to 2. oh x^2+1 dx with the partition P=-2,-1,0,1,2
*Friday, August 22, 2014 at 5:01pm*

**math**

If Britain and France had not adopted a policy of appeasement, would Adolf Hitler have been as successful as he was in overrunning Europe
*Friday, August 22, 2014 at 4:42pm*

**math mental math**

shelley spent 17 min washing the dishes. she spent 38 min cleaning her room. explain how you can use mental math to find how long shelley spent on the two tasks?
*Friday, August 22, 2014 at 3:56pm*

**math confused**

it took marty 42 min to write a book report. then he spent 18 min correcting this report. explain how can you use mental math to find how long marty spent on his report?
*Friday, August 22, 2014 at 3:51pm*

**math**

find d/dx of the integral from 1 to 2x of the (sqrt t^2+1)dt at x=sqrt2 the answer is 6. but i am not sure how to find d/dx. i tried taking the integral then doing that from 1 to 2x and then taking d/dx then plugging in sqrt2 for x but it was wrong
*Friday, August 22, 2014 at 3:43pm*

**MATH HELP **

shelley spent 17 min washing the dishes. she spent 38 min cleaning her room. explain how you can use mental math to find how long shelley spent on the two tasks?
*Friday, August 22, 2014 at 3:36pm*

**Related rates math in calculus**

A square sheet of cardboard has sides 18cm. Four equal portions are cut away from the corner and discard. The sides are then twiced up to form a restangular box. What are the dimension of the box formed that will have max volume?
*Friday, August 22, 2014 at 2:48pm*

**math**

which of the following is true about the function g(x)= 4x^2 - 3x^4? a)g is decreasing for x<1 b) g has a relative extreme value at (0,0) c)the graph of g is concave up for all x<0
*Friday, August 22, 2014 at 2:12pm*

**math**

20.Which of the following numbers could be described in the following way: an integer that is natural, rational and whole number? I think the answer is B A.0 B.1 C.2.33 D.-3 E.none of the above
*Friday, August 22, 2014 at 1:15pm*

**math**

15. What is the mathematical average of the number of weeks in a year, seasons in a year, and the number of days in January? This is what I know so far: I know there is 52 weeks in one year.
*Friday, August 22, 2014 at 1:03pm*

**math **

3. If Leah is 6 years older than Sue and John is 5 years older than Leah, and the total of their ages is 41. Then how old is Sue? This what I have so far: L=s+6 J=L+5
*Friday, August 22, 2014 at 12:58pm*

**math**

48.Kate's class has between 40 and 51 students. Exactly of 75%of the students in her class have black book bags, and exactly 1/6 of students in her class do not have a book bag at all. How many students are in Kate's class?
*Friday, August 22, 2014 at 12:54pm*

**math**

solution of the questions The sides of a quadrilateral ABCD are 6 cm, 8 cm, 12 cm and 14 cm (taken in order) respectively, and the angle between the first two sides is a right angle. Find its area.
*Friday, August 22, 2014 at 12:51pm*

**Math**

Write the numbers 1 to 9 in the circles so that each side of the square adds up to 12. (Hint:put 7 in the middle) Example: this is the grid u have to put the numbers in O------O-------O | |. | O------O-------O |. |. | O------O-------O
*Friday, August 22, 2014 at 12:35pm*

**Math**

I need to find expressions that will show how 5 x 37 can be rewritten using distributive property. 5 x 30 + 7 ---- My answer 5 x 30 + 5 x 7 5 x 40 - 5 x 7 5 x 40 - 5 x 3 *It can be more than one answer* 3u + 7v + 4u = 2v (I have to simplify) My answer is 7u + 9v because 4+3 ...
*Friday, August 22, 2014 at 12:07pm*

**Math**

What is the value of w? 5( 9 - 3) = w x 9 - 5 x 3 I think the answer is 6 because 9-3 equals 6. *it's not multiple choice*
*Friday, August 22, 2014 at 11:18am*

**math**

I need help with just two questions. Can you help me with them please? Thank you so much! 1. School Materials, Inc., packs 1-centimeter cubes in boxes that are 10 centimeters long, 12-centimeters wide, and 8 centimeters high. A carton holds 2 dozen boxes of cubes with no space...
*Friday, August 22, 2014 at 10:57am*

**Statistics**

The scores for math test #3 were normally distributed. If 15 students had a mean score of 74.8% and a standard deviation of 7.57, how many students scored above an 85%?
*Friday, August 22, 2014 at 3:43am*

**Calculus-Math**

Derivative of x^7/7x^3-45x+25
*Friday, August 22, 2014 at 1:09am*

**math**

One basket of oranges has one-third again as many oranges as a second basket. If the first basket has 3 more oranges than the second basket,how many has the first basket?
*Friday, August 22, 2014 at 12:53am*

**math **

Nancys birthdays is beteen aug 10 and aug 24. the date of her birthday is not an even number. the sum of the digits is 4. show how to find the date of nancys birthdat
*Thursday, August 21, 2014 at 11:13pm*

**math **

Nancys birthdays is beteen aug 10 and aug 27. the date of her birthday is not an even number. the sum of the digits is 4. show how to find the date of nancys birthdat
*Thursday, August 21, 2014 at 11:12pm*

**science & math**

for a ray of light incident normally on one face of the prism prace course of the ray measure the delta angle explain briefly do this for prism with angleA=60,45,90
*Thursday, August 21, 2014 at 10:34pm*

**math**

what is the base 10 of 469 3rd grade
*Thursday, August 21, 2014 at 10:03pm*

**Math**

How many 2-digit numbers have two different even numbers and odd numbers?
*Thursday, August 21, 2014 at 9:22pm*

**Math **

Write each percent as a fraction in simplest form. 2 2/5%=?
*Thursday, August 21, 2014 at 8:28pm*

**math **

Diana is going camping with her family. Their campsite is 3/4 mile away. They walk at a steady speed of 1 and 1/8 miles an hour. How many minutes will it take to get to the campsite
*Thursday, August 21, 2014 at 8:13pm*

**math**

35. If b is postive integers less than 400 and more than 100, then how many integer pairs (a,b) satisify the equation a/b=2/9?
*Thursday, August 21, 2014 at 7:42pm*

**math**

12. For what value of x will x and 120 have the same mean as 34 and 53?
*Thursday, August 21, 2014 at 7:39pm*

**math**

11.What is the slope of the line whose equation is 4y-6x+16=0?
*Thursday, August 21, 2014 at 7:38pm*

**math**

compare write >or< for 2,854,376 to 2,845,763
*Thursday, August 21, 2014 at 6:58pm*

**math**

The density of a solid or liquid material divided by the density of water is called the _______ of the material?
*Thursday, August 21, 2014 at 6:54pm*

**Math**

If 20% more than a number results in 28, what is the number? Express your answer as a fraction. Please help mates.
*Thursday, August 21, 2014 at 6:37pm*

**Math**

Whats the name of the number under the dividend? (Not the remainder)
*Thursday, August 21, 2014 at 5:36pm*

**Math**

Solve for w G=4x+1/2w+3/4 Can you show me the steps pls?
*Thursday, August 21, 2014 at 5:27pm*

**math**

why are 10.6 the same as 10.60?
*Thursday, August 21, 2014 at 4:56pm*

**math**

25. If the area of the base of a circular pool is 942 square yards. What is its radius?(use pie=3.14)
*Thursday, August 21, 2014 at 4:54pm*

**Math**

Using only one cut, how would you divide 7 pieces of licorice among 5 people so that each person gets the exact same amount of licorice without bending the licorice
*Thursday, August 21, 2014 at 4:36pm*

**Math **

If a play at the theater in day 15 was sold out expect for 3 rows in the balcony and one seat in all the other rows, how many people attended the play? This is all the information that the problem gave.
*Thursday, August 21, 2014 at 4:11pm*

**math**

use the number 913,256 write the name of the period that has the digits 913
*Thursday, August 21, 2014 at 3:49pm*

**math**

32 gal/min = qt/h
*Thursday, August 21, 2014 at 2:49pm*

**math**

1. Tim has an after-school delivery service that he provides for several small retailers in town. He uses his bicycle and charges $1.25 for a delivery made within 1 1/2 mi, $1.70 for a delivery of at least 1 1/2 mi but less than 2 miles, and so on. How much would Tim charge to...
*Thursday, August 21, 2014 at 2:37pm*

**Math **

I don't know how to answer this. If 10% of a number is 2 less than 20% of the same number, then 80% of the number equals_______.
*Thursday, August 21, 2014 at 2:16pm*

**Math**

Ernie wants to fence in a rectangular play yard for his two dogs. He has 12 pieces of fence that are one unit each. What are the dimensions of the largest play yard that Ernie could make? Show your work
*Thursday, August 21, 2014 at 2:11pm*

**Math**

Need help plz?! Graph the ordered pairs (0, 4) and (1, -1) and connect to form a line. Which Quadrant contains no point for this linear function? I honestly need help here
*Thursday, August 21, 2014 at 2:01pm*

**math**

information: (C)Charges $750 for up to 30 people. (P)Plus $20 per person for each extra person. question: C dollars is the cost of a party for P people.Find formula that gives C in terms of P.
*Thursday, August 21, 2014 at 1:54pm*

**math**

a dining table in the shape of a rectangle ABCD has sides of length (2X+12)and x cm and the length of the diagonal BD is (2x+18)find the value of x
*Thursday, August 21, 2014 at 10:44am*

**math algebra**

A teacher charges php.500.00 per hour of tutorial service to a second year high school student. If she spends 3hours tutoring per day how much would she receive in 20days?
*Thursday, August 21, 2014 at 8:00am*

**math algebra**

The amount of paint p needed to paint walls of a room varies directly as the area A of the wall of 2gallons of paint are needed to paint a wall with an area of 100sq. meters?
*Thursday, August 21, 2014 at 8:00am*

**math algebra**

The service fee of physical therapist varies directly as the number of hours n of service rendered A physical therapist charges Php 2,100.00 for 3hours service to patient in a home care. How much would he be paid for 6 ½ hours of service.
*Thursday, August 21, 2014 at 7:59am*

**math**

change f(x)=(x-1)^2-4 to general form
*Thursday, August 21, 2014 at 7:54am*

**math**

The circumference of a circle varies directly from its diameter. If the circumference of the circle having a diameter of 7cm is 7 cm, what is the circumferences of the circle whose diameter is 10cm? 18cm? 20cm? a. Write a mathematical statement that relate two quantities ...
*Thursday, August 21, 2014 at 7:51am*

**math**

on school picnic,a group of students agree to pay equally for the use of a full boat and pay Rs.10 each.if there had been 3 more students in each group, each would have paid Rs.2 less.how many students were there in the group?
*Thursday, August 21, 2014 at 6:59am*

**math**

a father is 7times as old as his son .two years ago,the father was 13times as old as his son.how old tyey are now?
*Thursday, August 21, 2014 at 6:50am*

**Math**

if it takes 1 second to place a grain of rice on the chessboard, how long will it take to place all the grains on the chessboard for each reward? example: Reward A had 3768 grains Reward B had 73628 grains Reward C had 82613 grains what is the formula to follow ? and how ...
*Thursday, August 21, 2014 at 1:40am*

**MAth**

absolute value problem |13|-7x|-2+8|/6 = 13-7x10/6 am I on the right track?
*Thursday, August 21, 2014 at 12:10am*

**math**

23. There are two telephone companies provide home phone service in New York City. Company A charges $25 monthly fee and $0.10 for one minute after 30 minutes phone call. Company B charges $20 monthly fee and $0.12 for one minute after 30 minutes phone call. By what minutes, ...
*Thursday, August 21, 2014 at 12:01am*

**math**

If 4 coins are tossed simultaneously, what is the probability of getting exactly 3 tails?
*Wednesday, August 20, 2014 at 11:57pm*

**math**

21. If 6x+4y=40 and 7y/4x=7, what is value of x^2?
*Wednesday, August 20, 2014 at 11:53pm*

**Math**

A restaurant manager lost $415 in business during the month of January. Business picked up in February, and he ended the month with a profit of $1580. What was the managers profit after January and February?
*Wednesday, August 20, 2014 at 11:53pm*

**Math**

Dominic collects sports science fiction and history books. He has 21 books about sports, 35 books about science fiction, and 14 about history. He wants the same number of each type of book on each shelf. What is the greatest number of each type of book on each shelf?
*Wednesday, August 20, 2014 at 10:27pm*

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