# maths

Most popular questions-
## Maths

If m times the 'm'th term of an A.P. be equal to n times the 'n'th term, show that is (m+n)th term is zero.

*asked by Satish on January 29, 2019* -
## Maths

Prove that max & min values of asinx+bcosx are =/- (a^2+b^2)^1/2

*asked by Alok on July 12, 2013* -
## maths

a man loses 12.5% of his money & after spending 70% of the remainder , he was left with Rs 210/- . the money he had at the beginning is?

*asked by rupesh on October 21, 2009* -
## maths

Which angle between 0° and 360° has the same cosine as the angle 58°? give your answer as an integer. how do i do this please?

*asked by susan on May 8, 2011* -
## maths

Find the equation to the cone whose vertex is the point (a,b,c) and whose generating lines intersects the conic px2 + qy2 = 1, z = 0.

*asked by mukesh on January 20, 2018* -
## maths

ABCDE is a Pentagon with BE parallel to CD and BC parallel to DE. BC is perpendicular to CD. if the perimeter of ABCDE is 21cm. Find the value of x and y.

*asked by geometry on July 11, 2014* -
## maths

Starting from one oasis, a camel walks 25km in a direction 30 degrees south of west and then walks 30km toward the north to a second oasis. What distance separates the two oases?

*asked by christine on June 6, 2011* -
## Maths

We have Rs.100/-.If we spend Rs.100/-and balance is Rs.102/-,show how is Rs.2/-extra Spent Balance Day 1 Rs 40 Rs 60 Day 2 Rs 30 Rs 30 Day 3 Rs 18 Rs 12 Day 4 Rs 12 Rs 00 -------- -------- Total Rs 100 Rs102......?

*asked by Sam on February 28, 2016* -
## maths

If the zero of the polynomial x2 + px +q and double of the zero of 2x2 - 5x-3 respectively find values of p and q?

*asked by kamaraj on June 11, 2016* -
## Maths

Three numbers are in the ratio 2:3:5. The first number, second number reduced by 5 and the third number form an arithmetic sequence. Then the three numbers are

*asked by Suriya on July 6, 2017* -
## Maths

jason went shopping, he bought a watch and a pair of trainers for a total price of £53.55, this price includes a 15%loyalty discount. before the discount the trainers were priced at £38 work out the price of the watch before the discount

*asked by hayden on October 26, 2017* -
## maths

a rectangular tank 30cm×20cm×12cm contains water to a depth of 6 cm.A metal cube of side 10 cm is placed in the tank with one face resting on the bottom of the tank.find the volume of the water in the litre must be poured in the tank so that the metal

*asked by ambuj on December 1, 2015* -
## maths

What is the 50th term of the linear sequence below? 27 , 25 , 23 , 21 , 19 ,

*asked by ro on October 16, 2018* -
## Maths

A speed camera takes two photographs of a car.Photo 2 was taken 0.5 seconds after Photo 1.Marks on the road are 0.8 meters apart.Calculate the average speed of the car in m/s? 7.2 m/s but when i submit answer i get 2 marks only not full 3 marks what am I

*asked by Anonymous on March 4, 2017* -
## maths

A town's population increased by 1200 people,and then this new population decreased 11%. The town now had 32 less people than it did before the 1200 increase. Find the original population.

*asked by Tejaswi on July 6, 2015* -
## maths

solve: tanx+tan2x+√3tanx tan2x=√3 (0

*asked by rabin on January 2, 2017* -
## maths

sarah invested £12000 in a unit trust 5 years ago, the value of the unit trust increased by 7% per annum for each of the last 3 years. before this the price had decreased by 3% per annum. calculate the current price of the unit trust

*asked by hayden on October 26, 2017* -
## maths

A rectangular sheet of paper 30 cm X 18cm can be transformed into a right circular cylinder in two ways - by rolling the paper along its length or by rolling it along its breadth . Find the ratio of the volume of two cylinders formed.

*asked by Anonymous on January 2, 2013* -
## Maths

Amita wants to make a mold for a candle. She wants the shape of the candle to be rectangular prism with a volume of exactly 28 cubic cm. The answer for this question is given as 10 molds. Can you explain in detail how the answer is 10 to better understand.

*asked by Shelly on March 31, 2016* -
## maths

an amount of Rs 5000 is put into three/investments at the rate of interest of 6%, 7%, 8% per annum respectively; the total annual income is Rs 35800. If the combined income from first two investments is Rs 70 more than the income from the third. Find

*asked by edward on July 1, 2013* -
## maths

ABC company currently has 1/4 fewer computers than it has employees,if they currently have 80 employees and they want to hire 5% more.how many computers will they need to buy to ensure that each employees has one?

*asked by Gladys on October 8, 2016* -
## Maths

If ABCDEF is a regular hexagon then prove that ab+ac+ad+ea+fa=4ab

*asked by Hari bhatta on July 25, 2018* -
## Maths

3. Which of the following examples would show a negative trend? A) height and weight of students B) test scores and height of students C) outside temperature and heating bill D) none of these 4. The scatter plot below shows the relationship between the

*asked by Like I'd Tell You. on March 4, 2016* -
## maths

study ways of raising a loan to buy a car or house e.g bank loan

*asked by harsh on June 20, 2016* -
## MAths

A four-wheel-drive vehicle is transporting an injured hiker to the hospital from a point that is 30 km from the nearest point on a straight road. The hospital is 70 km down that road from that nearest point. If the vehicle can drive at 30 kph over the

*asked by Rajesh on December 15, 2015* -
## Maths

Principal - 6000 Rate - 5% Effective Date - May 15 Maturity Date - November 1 Partial Payment Amount - $1500 Partial Payment Date -August 15 Also Answer the following questions: 1. NUMBER OF DAYS BETWEEN EFFECTIVE DATE AND PARTIAL PAYMENT = 2. INTEREST ON

*asked by Kim on March 10, 2008* -
## maths

Betty paint twice as fast as Dan. when working together Betty and Dan can paint 2400 square feet in 4 hours,another employee,sue joined their painting team.working together Dan,Betty and Sue can paint 36000 square feet in 3 hours. if sue works alone,how

*asked by Gladys on October 8, 2016* -
## maths

Insert three geometric means between 1 and 81.

*asked by ELIJAH HAVA on April 28, 2013* -
## maths

To fill a swimming pool two pipes are to be used.If the pipe of larger diameter I'd used for 4 hours and the pipe of smaller diameter for 9 hours only half the pool can be filled .Find ,how long it would take for each pipe to fill the tank separately, if

*asked by Harshita on March 18, 2016* -
## maths

a train of length 100m runs at a speed of 120km/hr from north to south. another train of length 150m travels with a speed of 80 km/hr from south to north. what is the time required to cross each other ?

*asked by mahesh on May 29, 2017* -
## Maths

An aeroplane flies from a town X on a bearing of N 45 degree E to another a town Y on a distance of 200km.it then changes course and flies to another town Z on a bearing of S 60 degree E.if Z is directly east of X.Calculate (a) the distance from X to Y (b)

*asked by Bright on August 24, 2015* -
## maths

What is the gradient of a line that has an angle of inclination of 75°? Enter the answer, rounded to 4 significant figures in the box below. the answer should be a number. ???

*asked by elizabeth on May 8, 2011* -
## Maths

Among the examinees in an examination 30%, 35% and 45% failed in Statistics, in Mathematics, and in at least one of the subjects respectively. An examinee is selected at random. Find the probabilities that a. He failed in Mathematics only b. He passed in

*asked by Neeraj Bhanot on October 9, 2010* -
## maths

prove that 1+sin2x-cos2x / sin2x+cos2x = tanx

*asked by Anonymous on February 16, 2013* -
## Maths

In what way is the bar graph is better than the pictographs

*asked by R rishika on November 28, 2017* -
## Maths

A map is drawn to a scale 1cm to 10km find the actual distance represented by 54 mm

*asked by Girl anomalous on November 1, 2016* -
## Maths

On the 1st of January 2014, Carol invested some money in a bank account. The account pays 2.5% compound interest per year. On the 1st of January 2015, Carol withdrew £1000 from the account. On the 1st of January 2016, she had £23 517.60 in the account.

*asked by Joelle on February 2, 2017* -
## Maths

Find the least number of piles so so that piles of 12, 15 and 20 marbles be made.

*asked by Himanshi on July 28, 2015* -
## Maths

Hasim counted his money. he gave 1/3 to his brother. he spent £12 on his sister. What he had left was half what he had at the beginning. how much did he give his brother?

*asked by Henry on May 1, 2017* -
## maths

the boys of a school can be arranged in 12, 15, 18 equal rows and also into a solid square. what is the least number of boys that the school can have? (hint: find the lcm) anwer is 900 explain

*asked by tanzil on December 1, 2013* -
## Maths

adnan bought 96 eggs at the rate of Rs.40 per dozen and sold at the rate of Rs.4 per egg.find the percentage of profit,if 3 eggs were rotten.

*asked by Rahim shah on October 13, 2016* -
## maths

In a class of 80 students, 53 study Art, 60 study Biology, 36 study Art and Biology, 34 study Art and Chemistry, 6 study Biology only and 18 study Biology but not Chemistry. Illustrate the information on a Venn diagram. Determine the number of students who

*asked by Kwame on September 20, 2016* -
## maths

a carpenter has a board that is 8 ft long. he cuts off two piece.one piece is 3 1/2 ft long and other is 2 1/3ft long.How much off the board is left.

*asked by nancy on February 26, 2015* -
## maths

the 8th term of an a.p is 37 and 12th term is 57 .find the a.p please help this questions .please help.

*asked by simranpreet on December 3, 2012* -
## maths

Which term of the progression 19+ 18 1/5 + 17 2/5 + …is the first negative term? What is the smallest number of terms which must be taken for their sum to be negative ? Calculate this sum exactly.

*asked by sma on January 26, 2016* -
## Maths

Simplify ; 4 root (132 by143) minus 2

*asked by Aditya on August 13, 2015* -
## maths

From the top of a cliff 150m high, the angles of depression of two boats are 60 and 30. Find the distance between the boats if they are on the opposite sides of the cliff.

*asked by Anonymous on January 22, 2013* -
## maths

Prove that (2√3+3)sinx+2√3cosx lies between -(2√3+15) and (2√3+15)

*asked by krishan on June 18, 2012* -
## maths

Four bells tolls at an interval of 8,12,15 &18 second a respectively. How many times will they toll together in one hour excluding the one at the start?

*asked by sanjay on September 18, 2015* -
## Maths

17. Atlanta, Georgia, receives an average of 27 inches of precipitation per year, and there has been 9 inches so far this year. How many more inches, p, of precipitation can Atlanta get and to stay at or below the average? (1 point) p + 9 > 27; p > 18 9 +

*asked by aJ on February 4, 2018* -
## maths

a 4 cm long chord subtends a central angle of 60° . the radial segment of this circle is

*asked by alishbah on November 24, 2014* -
## maths

the sum of first 8 terms of an arithmetic progression is 156.the ratio of its 12th term to its 68th term is 1:5.calculate the first term and the fifteenth term. please help this questions please.

*asked by simranpreet on December 3, 2012* -
## maths

Sachin and rahul attempted to slove a quadratic eqn. Sachin made a mistake in writing down the constant term and ended up it roots (4,3). Rahul made a mistake in writing down coefficient of x to get roots (3,2) the correct roots of the eqn are:

*asked by jha on July 5, 2014* -
## maths

James is able to sell 15 of product A and 16 of product B and a week , Sally is able to sell 25 of product A and of 10 product B a week,and Andre is able to sell 18 of product A and 13 of product B a week.if product A sells for $35.75 each and product B

*asked by Gladys on October 8, 2016* -
## Maths

Dylan invested some money into his bank. He agreed on a simple interest rate of 3% per annum for a period of 2 years. At the end of the 2-year period, the value of his investment increased by£72 Work out the value of Dylan's initial investment.

*asked by Nathan on February 2, 2017* -
## maths

find hours to fill a tank of 70m*44m*3m filled by pipe of diameter 35 cm at rate of 6m/ second?

*asked by ojvi on February 14, 2017* -
## maths

if it takes 10 men 6 months to build a house, how long will it take one man?

*asked by kerry on September 6, 2015* -
## maths

Cos square 30 degree cos square 45 degree + 4 sec square 60 degree + 1/2 cos square 90 degree - 2 tan square 60 degree

*asked by trisha on June 1, 2015* -
## maths

Janet gave 5/8 of her old coins to Karen. If she gave 250 old coins to karen, how many coins did she have at first?

*asked by gull on November 26, 2011* -
## maths

A car travelled 100 km with half the distance at 40km/h and the other half as 80 km/h.Find the average speed of the car for the whole journey.

*asked by Anonymous on October 12, 2016* -
## maths

An open rectangular box has internal dimensions 2m long, 20cm wide and 22.5cm deep. If the box is made of wood 2.5cm thick, calculate the volume of the wood in cm cube.

*asked by Aghedo sarah on June 17, 2017* -
## Maths

A boat sails 4km on a bearing of 038 degree and then 5km on a bearing of 067 degree.(a)how far is the boat from its starting point.(b) calculate the bearing of the boat from its starting point

*asked by Bright ulubi on March 28, 2016* -
## Maths

Two boats A and B left a port C at the same time on different route .B travelled on a bearing of 150 degree and A travelled 8km and B had travelled 10km ,the distance between the Two boats was found to be 12km .calculate the bearing of A's route from C.

*asked by Ruth on June 13, 2017* -
## maths

the sum of the first two terms of a GP is 28,but the sum of the third and fourth terms is 252.find the second term of the gp if the seventh term is 5103. please help.

*asked by miracle on October 24, 2014* -
## Maths

There are 50 students in a class of which 40 are boys and the rest are girls the average weight of the class is 44kg and the averageweight of the girls us 40kg. find the average wieght of the boys

*asked by priya on March 15, 2015* -
## MATHS

A CYLINDRICAL PIPE MADE OF METAL IS 3 CM THICK .IF THE INTERNAL RADIUS OF THE PIPE IS 10 CM, FIND THE VOLUME OF THE METAL USED IN MAKING 3M OF THE PIPE RADIUS OF INTERNAL PIPE =10CM RADIUS OF EXTERNAL PIPE =13CMVOLUME OF PIPE=PI R^2H

*asked by MAYOWA on April 28, 2016* -
## maths

In a survey of 100 students, the number s studying various languages were found to be: Spanish, 28; German, 30; French, 42; Spanish and German, 8; Spanish and French, 10; German and French, 5; all three languages, 3. (a)How many students were studying no

*asked by Jamie-anne on April 17, 2017* -
## maths

The Cooking Club made some pies to sell at a basketball game to raise money for the new math books.The cafeteria contributed four pies to the sale.Each pie was then cut into five pieces and sold.The were a total of 60 pieces to sell.How many pies did the

*asked by peter on August 10, 2014* -
## maths

If the zero of the polynomial x2-5x+k are the reciprocal of each other find the value of k

*asked by kamaraj on June 11, 2016* -
## maths

jayden and caden share a reward of $140 in a ratio of 2:5.What fraction of the total reward does jayden get?

*asked by esha on August 1, 2016* -
## MATHS

A boy spent 1/4 of his money on sweets and 3/8 on bus fares. What fraction of his money is left?

*asked by Help on November 2, 2014* -
## maths

Ali shared 1liter of pineapple juice equally with three friends how much did each friend get.

*asked by umar on August 19, 2017* -
## maths

Given that G=ab, find the percentage increase in G when both a and b increase by 10%.

*asked by arzam on November 9, 2013* -
## maths

A rectangular grassyplot is 112m long and 78m broad. It has a gravel path 2.5m wide all around it on the inside. Find the area of path and the cost of constructing it at the rate of 1.80 per sq. m .

*asked by Anonymous on December 28, 2012* -
## Maths

I'm done with this question..Can anyone help me? tan^-1(yz/xr) + tan^-1(zx/yr) +tan^-1(xy/zr) = pi/4 Prove that x^2+ y^2+ z^2=r^2

*asked by Suhail on March 11, 2015* -
## maths

Let ABCD be a square with side legnth 7cm. Another square KLMN is inscribed into ABCD such that its vertices lie on the sides of ABCD. Find the lenghts of parts of ABCD sides which are divided by the vertices of KLMN. If [the area of KLMN]: [area of ABCD]

*asked by Candice on June 9, 2009* -
## Maths

50 divided into two parts such that if 6 is subtracted from one part , 12 is added to the second part we get same number .

*asked by Sara on December 2, 2016* -
## maths

A fruit drink is made by mixing juice and lemonade in the ratio : 1 : 4 (juice : lemonade) Juice costs £6.00 per litre. Lemonade costs 50p per litre. a) show that 1 litre of the fruit drink costs £1.60 to make. b) The fruit drink is sold for £2 a litre.

*asked by jade on December 5, 2017* -
## maths

I am a 7 digit number My tens place is 3 My lakhs place is 2 My hundreds place is twice the lakhs place My thousands place is thrice the tens place My ten lakhs place is 3 less than the thousands place My ones place is 2 less than the thousands place My

*asked by Anonymous on June 22, 2016* -
## maths

prove that tan(45+theta)+tan(45-theta)=2sec2theta

*asked by tina on August 10, 2012* -
## maths

find the missing value to the nearest hundredth Tan ___ = 73 I just don't get these!

*asked by corie on February 8, 2013* -
## Maths

A gymnasium is 50m long and 30m broad. A running track 2. 5m wide runs all around it on the inside. Find the area of the track?

*asked by Samson on February 24, 2016* -
## Maths

It takes for three gardeners 90 minutes to weed a garden. If the job is to be done in only 15 minutes, how many more gardeners need to be put on the jobs?

*asked by Sadaf on December 15, 2016* -
## Maths

(3.6x10^-5)/(1.8x10^2) What's the answer in standard form?

*asked by Jesse on October 27, 2018* -
## maths

In a graduating class with the same number of boys and girls, 1/8 of the girls and 5/6 of the boys are honor students. What part of the class consists of boys who are not honor students

*asked by athaulla on July 27, 2016* -
## Maths

The sum of three consecutive terms of an AP is 72 then what is the middle term

*asked by Niharika on February 10, 2018* -
## Maths

The smallest positive integer value of n for which 168 n is a multiple of 324

*asked by Martabak on August 24, 2011* -
## Maths

A true/ false test is given. If a person guesses the answers, the probability that any particular question is correctly answered is 0.5. If the test contains 14 questions and 7 correct answers is a pass, what is the probability of passing the test by

*asked by Lucy on February 13, 2014* -
## mATHS

Vladimir builds 3 legged stools and 4 legged tables. Last month he used 72 legs to build 3 more stools than tables. How many stools and how many tables did he build?

*asked by Anonymous on June 15, 2013* -
## maths

A circular ink blot grows at the rate of 2 cm per sec. Find the rate at which the radius is increasing after 28/11 sec.

*asked by nandni on October 15, 2014* -
## maths

a man bought 360 eggs at rs 12 per dozen. 60 eggs were broken and 30 were rotten. find his profit and loss percent . if he sells the rest of the eggs at rs 15 per dozen.

*asked by shehzad on October 12, 2015* -
## Maths

The radius of a wheel is 7 cm. In covering 44 km, how many revolutions will it make?

*asked by Aravind on February 23, 2011* -
## Maths

9. r/15 ≥ -3 R ≥ -45*** R ≥ -15 R ≥ 12 R ≥ 45 10. -8x > -64 x < 8*** x > 8 x < -72 x > 72 13. A baseball bat and 8 baseballs cost $163.25. The bat costs $106.45. What is the cost c of one baseball? (1 point) 163.25 – 8c = 106.45; $33.71 8c +

*asked by Cami on January 13, 2016* -
## MATHS

The recipe for mint chocolate ice cream requires 2 1/4 cups of creams for 5 people. You need ice cream for 8 people. How much cream will you need? Please explain,thanks.

*asked by BRENDON on September 13, 2009* -
## Maths

A shopkeeper purchases 50 dozen eggs at Rs. 16 per dozen. Of these 40 eggs were found to be broken. At what price should he sell the remaining eggs in order to make a profit of 5%?

*asked by Arundati on September 12, 2015* -
## maths

The half-life of lead is 22 years. How long will it take for a sample of this substance to decay to 80% of its original amount

*asked by Anonymous on December 13, 2015* -
## maths

300 gm of water at 25°c is added to 100 gm of ice at 0°c.the temperature of the mixture is?

*asked by RAJESH on January 12, 2018* -
## maths

In a class of 60 students,the number of students who passed biology is 6 more than the number who passed chemistry.Every student passed at least one of the two subjects and 8 students passed both subjects.How many students passed biology and chemistry.

*asked by Ernest on March 26, 2019* -
## Maths

The base of a prism is a right angled triangle with it's two shorter sides equal to 4cm and 8cm .the prism is 10cm long. Calculate the volume of the prism

*asked by Neo on August 2, 2019* -
## Maths

The sum of interior angles of an irregular polygon is 5040 .find the number of sides of the polygon

*asked by Langton on September 27, 2017*