Wednesday

July 23, 2014

July 23, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

There are 4 pieces of paper, numbered 10 to 13, in a hat. After another numbered piece of paper is added, the probability of picking a number between 10 and 13 inclusive is 4/5. Which of the following numbers could be the number on the new piece of paper? A. 10 B. 11 C. 12 D. ...
*Friday, July 18, 2014 at 11:06am*

**math**

Between 3 P.M and 3:30 P.M., the minute hand of a clock moves 180 degrees. How many degrees does the hour hand move during that same period of time?
*Friday, July 18, 2014 at 10:55am*

**math**

Jack and Jill went to Burger Queen. Jack bought 2 hamburgers and 3 shakes for $4.21 while Jill bought 3 hamburgers and 2 shakes for $5.24. The cost of 1 hamburger and 1 shake is: A) $1.03 B) $1.54 C) $1.89 D) $9.45
*Friday, July 18, 2014 at 10:53am*

**math**

Mr. Jones got a loan for a sum of money, and at the time of repayment he owned $75.00 in interest. Mr. Brown borrowed three times the amount of money Mr. Jones had borrowed at the same rate of interest for twice as long a time. How much interest does Mr. Brown pay?
*Friday, July 18, 2014 at 10:32am*

**math**

Jack and Jerry can complete a job in 2 hours when working together.If Jack requires 6 hours to finish the job alone,how many hours does Jerry need to finish the job alone?
*Friday, July 18, 2014 at 10:06am*

**MATH**

If the lengths of the sides of a triangle are in the ratio 8:4:5 and its perimeter is 48cm find its area
*Friday, July 18, 2014 at 9:25am*

**math**

convert 0.12 to fraction
*Friday, July 18, 2014 at 7:28am*

**MATH WORD PROBLEM**

TERRY HAS A BOARD THAT IS 4YARDS LONG. hOW MUCH NEEDS TO BE SAWN OFF TO MAKE THE BOARD 2FEET 8INCHES LONG?
*Friday, July 18, 2014 at 3:33am*

**Math**

The ratio of dogs to cats at the pet storeis 1:4. If the pet shop has 7dogs, how many cats does it have?
*Friday, July 18, 2014 at 3:09am*

**math**

1. Mrs. Macdonald wants to put a uniform border of tulips around the outside of her vegetable garden. Her vegetable garden is 20m by 28m. This border will look best if the area of the tulips border equal to the area of the garden. How wide should the tulip border be (accurate ...
*Friday, July 18, 2014 at 12:20am*

**Math**

If your car gets 18 miles per gallon of gas, how many pints of gas will you need to take a 698 mile trip
*Thursday, July 17, 2014 at 11:53pm*

**Math 221**

In Cowling's Rule If a doctor prescribes 75 milligrams of tamiflu for an adult, then how many milligrams would she prescribe for a six-year-old child using Cowling's rule?
*Thursday, July 17, 2014 at 10:44pm*

**math**

Craig made a cylinder-shaped sand candle.The radius of it base is 4 cm, its height is 18 cm.How many cubic centimeters of sand did he use?
*Thursday, July 17, 2014 at 10:43pm*

**math**

One package of water plants is recommended for 3000 cubic centimeters of water in a fish tank.How many packages of plants will be needed for a 45 cm by 70 cm tank that is filled to a depth of 10 cm?
*Thursday, July 17, 2014 at 10:42pm*

**Math 221**

If a doctor uses Cowling's rule to prescribe 187 milligrams of Tamiflu to a child when she would prescribe 500 milligrams to an adult, then how old is the child?
*Thursday, July 17, 2014 at 10:40pm*

**math**

Lena plans to fill her 22-cm cube to within 2 cm of the top.How many cubic centimeters of dirt will Lena need?
*Thursday, July 17, 2014 at 10:28pm*

**math**

Each term in a sequence of numbers, except for the 1st term, is 2 less than the square root of the previous term.If the 3rd term of this sequence is 1, what is the first term?
*Thursday, July 17, 2014 at 9:58pm*

**Math 221**

The question is using the Cowling's Rule for children's dosage of medication. Explain what the variables in the formula represent and show all steps in the computations. Part A -An adult dose is 75mg Part B- 500mg (adult) 187mg (child)
*Thursday, July 17, 2014 at 9:37pm*

**math**

Carrie can inspect a case of watches in 5 hours. James can inspect the same case of watches in 3 hours. After working alone for 1 hour, Carries stops for lunch. After taking a 40 minute lunch break, Carrie and James work together to inspect the remaining watches. How long do ...
*Thursday, July 17, 2014 at 9:01pm*

**Math**

Sale prices at the Ajax Outlet Store are 20% above original prices. On Saturdays a discount of 25% off the sale price is given. What is the Saturday price of a coat whose original price is $145? I need help.
*Thursday, July 17, 2014 at 8:12pm*

**math**

A 6.5 foot tall person casts a shadow that is 10 feet long. How tall is a building that casts a shadow that is 43 feet long?
*Thursday, July 17, 2014 at 8:11pm*

**math**

mr. lee had a bag of red beans and a bag of black beans. 20% of the total number of beans were black, and there were 180 ounces more red beans than black beans. he transferred some red beans to the bag containing black beans, so that, the bag now contained 30% of the total ...
*Thursday, July 17, 2014 at 8:01pm*

**math**

One package of water plants is recommended for 3000 cubic centimeters of water in a fish tank. How many packages of plants will be needed for a 45cm by 70cm tank that is filled to a depth of 10cm? please show work.
*Thursday, July 17, 2014 at 5:08pm*

**math**

Rosa is working on rectangular fish tank that is 15 cm wide and 20 cm long. How much tape will she need to put all around the top of the tank? please show work
*Thursday, July 17, 2014 at 5:00pm*

**Math**

How do I write metric caliper measurements as decimals?
*Thursday, July 17, 2014 at 4:36pm*

**Math**

Some of these conversions have an error. If there is an error, explain the nature of the error and complete the conversion correctly. (I redid all the questions and only the first one looked incorrect to me. Can you look it over and point out any other mistakes? Thank you) a) ...
*Thursday, July 17, 2014 at 4:34pm*

**Math**

How do I measure the circumference of a circle without the given radius/diameter? How do I measure the actual distance between Grande Prairie and Medicine Hat? Map Scale: 1:18,300,000
*Thursday, July 17, 2014 at 4:28pm*

**math geometry**

2. The height of one solid limestone square pyramid is 24 m. A similar solid limestone square pyramid has a height of 30 m. The volume of the larger pyramid is 16,000 m3. Determine each of the following, showing all your work and reasoning. a) The scale factor of the smaller ...
*Thursday, July 17, 2014 at 3:57pm*

**Math 10**

A trundle wheel can be used to measure the walking distance between two locations. a) If the diameter of a trundle wheel is 45 cm, how far will a person have walked when the wheel makes one full rotation? b) If a person walks for 0.7 km, how many times has the wheel rotated? ...
*Thursday, July 17, 2014 at 3:17pm*

**math**

A Number N Divides Each Of 17 And 30 With The Same Remainder In Each Case. What Is The Largest Value N Can Have?
*Thursday, July 17, 2014 at 2:37pm*

**Math**

Part A -An adult dose is 75mg Part B- 500mg (adult) 187mg (child) How I come up with a formula for this problem?
*Thursday, July 17, 2014 at 12:59pm*

**math**

In the equation q-12=89 what is the value of q
*Thursday, July 17, 2014 at 12:06pm*

**math**

find the value... lim (tan 2x- x)/(3x- sin x) x>0
*Thursday, July 17, 2014 at 11:49am*

**math (xi)**

lim [sec(x+h)-sec x]/h h>0
*Thursday, July 17, 2014 at 11:45am*

**math**

The annual interest rate for a customer’s loan of $425 is 15.75%. What is the total dollar amount to be repaid on the loan, including principle and interest, for the entire year?
*Thursday, July 17, 2014 at 10:54am*

**math**

A school has purchased a large field that has a square area of 19,500 ft2. What is the approximate length of each side of the square area? Round your answer to the nearest foot. a. 140 ft c. 142 ft b. 139.64 ft d. 139 ft
*Thursday, July 17, 2014 at 8:35am*

**math**

The sum of the first 20 terms of an arithmetic series is identical to the sum of the first 22 terms. If the common difference is -2, find the first term.
*Thursday, July 17, 2014 at 7:56am*

**math**

a 40 year building programme for new houses began in 1951(year 1) and finished in 1990 year (40). The number of houses built each year form an A.P. With the first term 'a' and the common difference 'd'. Given that 2400 new houses were built in 1960 and 600 new ...
*Thursday, July 17, 2014 at 7:49am*

**math**

The base of a rectangular prism is 6 inches - 9 inches. what is the lateral area of the prism
*Wednesday, July 16, 2014 at 10:47pm*

**math**

A regular hexagon has sides of 5 feet. What is the area of the hexagon
*Wednesday, July 16, 2014 at 10:45pm*

**math **

A picture frame is 18 inches long and 8 inches tall. It is 2 inches wide on all 4 side. What is the area of the picture frame?
*Wednesday, July 16, 2014 at 10:42pm*

**math**

at the rate of 360 miles per hour, how far would an airplane travel in 1 hour and 20 minutes
*Wednesday, July 16, 2014 at 10:40pm*

**math**

a saleman, after deducting his commission of 6%, remits $2491 to his company. The gross amount of the sale amounted to.
*Wednesday, July 16, 2014 at 10:27pm*

**Math**

A park is open 16 weeks of the year. An equation that models the cost function in thousands is: c(x){5, 0<x<5 where x is the number of weeks since opening and x, x>5} An equation that models the revenue function is r(x)=30(-5/x^2+1) for x>0 Determine the profit ...
*Wednesday, July 16, 2014 at 8:48pm*

**math**

Which of the following is a negation of the statement below? All cats are not mammals. All mammals are not cats. All cats are mammals. Some cats are mammals. All mammals are cats.
*Wednesday, July 16, 2014 at 8:40pm*

**math**

Which statements about a rhombus are always true? Its diagonals are congruent. All angles are congruent. All sides are congruent. Its diagonals are Û to each other.
*Wednesday, July 16, 2014 at 8:16pm*

**math**

A girl walks 3/4 of the way home in 18 minutes. At the same rate, she can walk the rest of the way home in A. 4 1/2 minutes B. 6 minutes C. 9 minutes D. 24 minutes
*Wednesday, July 16, 2014 at 8:06pm*

**math**

A girl walks 3/4 of the way home in 18 minutes. At the same rate, she can walk the rest of the way home?
*Wednesday, July 16, 2014 at 8:01pm*

**math**

In a certain class there are 12 boys and 18 girls. If the class average for an algebra exam is 90 and the boys' average score is 87, what is the girls' average score?
*Wednesday, July 16, 2014 at 7:58pm*

**math**

Determine if the statement is always, sometimes, or never true: A right triangle is an obtuse triangle. always sometimes never
*Wednesday, July 16, 2014 at 7:34pm*

**Math **

for all integers a, b, c, If a/b - 2c and a/2b + 3c then a/b and a/c Thanks for your help.
*Wednesday, July 16, 2014 at 7:29pm*

**math**

What number, when has "4" as exponent and increases by 4, is equal to the product 26 and 10?
*Wednesday, July 16, 2014 at 6:43pm*

**math**

Bob's age is now 3 times of Tom's age. Twelve years from now, tom will be 15 years old. How old is Bob now? please explain and show work
*Wednesday, July 16, 2014 at 6:41pm*

**Math**

A trundle wheel can be used to measure the walking distance between two locations. a) If the diameter of a trundle wheel is 45cm, how far will a person have walked when the wheel makes one full rotation? b) If a person walks for 0.7km, how many times has the wheel rotated? We ...
*Wednesday, July 16, 2014 at 6:29pm*

**Math**

A retail outlet purchased 300 printers at a list price of $100 less 7%, and 6%. The rate of markup on selling price on the printers was 40%. After selling 40% of the shipment, the rest of the printers were marked down to a reduced selling price. When there were only 40 ...
*Wednesday, July 16, 2014 at 6:27pm*

**math**

If length of one side of a 3x3 square is four times, and the length of the adjacent side is tripled, the perimeter of the new rectangle is how many times bigger than the perimeter of the original square? please explain and show work.
*Wednesday, July 16, 2014 at 6:26pm*

** math**

how to write 50 thousand please i need the answer today
*Wednesday, July 16, 2014 at 6:10pm*

**math **

for all integers a, b, c, If a/b - 2c and a/2b + 3c then a/b and a/c Is a question from discrete mathematics Thanks for your help.
*Wednesday, July 16, 2014 at 5:02pm*

**Math **

Prove or disprove If a/b - 2c and a/2b + 3c then a/b and a/c
*Wednesday, July 16, 2014 at 4:46pm*

**math**

15feet 6 inches cut in half equals
*Wednesday, July 16, 2014 at 9:37am*

**Math (Discrete Math)**

find the least positive integer N so that 1<gcd(N, 271) < gcd(N, 2014). Explain how you find N. Thanks for your help
*Wednesday, July 16, 2014 at 8:56am*

**math**

A 3,5 m-long stick casts a shadow that measures 5,2 m on the ground what is the height of a flagpole that casts a 29,2 m-long shadow?
*Wednesday, July 16, 2014 at 5:34am*

**Math**

Most credit cards require that you pay a minimum monthly payment of 2% of the balance. based upon a balance of $5,270.00, what would be the minimum monthly payment.
*Wednesday, July 16, 2014 at 3:35am*

**math**

evaluate 5x^2+3xy-y^2 when x=3 and y=-3
*Tuesday, July 15, 2014 at 10:01pm*

**Math **

simplify. 2[-3(2x+4)+8(3x-2)]
*Tuesday, July 15, 2014 at 9:43pm*

**Math Help**

write in decimal form 2.158x10^9
*Tuesday, July 15, 2014 at 9:41pm*

**math**

In the year 1950, the total quantity of rice produced in India was two crore five lakh eighty thousand tonnes. In the year 2001, India produced nine crore ten lakh fifty thousand tonnes of rice. In the year 2001, how much more rice was produced in India as compared to the ...
*Tuesday, July 15, 2014 at 7:30pm*

**math**

Consider the given statements. 1. Every prime number is odd. 2. There are 8 prime numbers between 10 and 40. 3. There are 11 composite numbers between 0 and 20. 4. The number 4 is the smallest even composite number. Which two given statements are incorrect? OptionsMark for ...
*Tuesday, July 15, 2014 at 7:30pm*

**math**

Three hundred thirty six students of school A and four hundred thirty two students of school B were to participate in a parade. For this, they had to stand in rows in such a way that no students of school A and B would get mixed up and the number of students in each row would ...
*Tuesday, July 15, 2014 at 7:28pm*

**math**

A pattern is given as: 1 = (1 × 2) ÷ 2 1 + 2 = (2 × 3) ÷ 2 1 + 2 + 3 = (3 × 4) ÷ 2 1 + 2 + 3 + 4 = (4 × 5) ÷ 2 1 + 2 + 3 + 4 + 5 = (5 × 6) ÷ 2 and so on What will be the value of 1 + 2 + 3 + 4 + 5 + ....+ 20?
*Tuesday, July 15, 2014 at 7:26pm*

**math**

Consider the given statements. 1. Every prime number is odd. 2. There are 8 prime numbers between 10 and 40. 3. There are 11 composite numbers between 0 and 20. 4. The number 4 is the smallest even composite number.
*Tuesday, July 15, 2014 at 7:24pm*

**math**

In the year 1950, the total quantity of rice produced in India was two crore five lakh eighty thousand tonnes. In the year 2001, India produced nine crore ten lakh fifty thousand tonnes of rice.
*Tuesday, July 15, 2014 at 7:12pm*

**math**

A few pieces of cloth, each of length 4 m 25 cm, are cut from a 170 m long cloth piece such that no cloth is left. How many pieces are cut from the long piece of cloth?
*Tuesday, July 15, 2014 at 7:10pm*

**Math**

An inverted right cone, half filled with water. I've only the volume of the entire cone to go from. So the volume of the cone = 1/3 the base area * height I've been told by a friend that the base area of a half scale cone = 1/4 of the larger cones base area; with the ...
*Tuesday, July 15, 2014 at 6:15am*

**math**

A square pyramid has sides of 8 m. Each face is an equilateral triangle. What is the lateral area of the pyramid?
*Tuesday, July 15, 2014 at 3:23am*

**math**

What is the equation of the line that passes through (-2, 2) and (1, -4)?
*Tuesday, July 15, 2014 at 3:12am*

**math (help please)**

find all real numbers that satisfy the equation: sinx= -\sqrt3/ 2
*Monday, July 14, 2014 at 11:15pm*

**math**

If A and B work together,they can finish a task in 2 hours. If they do the task separately, B can finish 3 hours earlier than A can. Find the time required for B to finish the task alone.
*Monday, July 14, 2014 at 10:50pm*

**math**

Solve and Check√x-6=√3-√x
*Monday, July 14, 2014 at 9:38pm*

**math**

it is a sequence. what do you tjink is the next ? and how does it happens / 1,11,21,1211,11121 . . .
*Monday, July 14, 2014 at 9:25pm*

**Math**

Find the Exact Value of the Composition cos(arcsin(1/4))
*Monday, July 14, 2014 at 9:02pm*

**Math**

Billing office is trying to figure out the amount of 0.75 hour overtime for a worker who is paid $32.48 for A regular hourly rate. The overtime rate is 1.5 of his regular hourly rate. How much is 0.75 of an hour at the overtime rate for this worker
*Monday, July 14, 2014 at 8:14pm*

**math**

The altitude of an equilateral triangle is 6 square 3 units long. The length of one side of the triangle is ____ units.
*Monday, July 14, 2014 at 7:27pm*

**Math**

A standard deck of playing cards is shuffled and three people each choose a card. Find the probability that the first two cards chosen are clubs and the third card is black if the cards are chosen with replacement, and if the cards are chosen without replacement.
*Monday, July 14, 2014 at 7:14pm*

**math**

One phone plan charges a $20 monthly fee and $0.08 per minute on every phone call made. Another phone plan charges a $12 monthly fee and $0.12 per minute on each call. After how many minutes is the charge the same for both plans? A.60 minutes B.90 minutes C.120 minutes D.200 ...
*Monday, July 14, 2014 at 6:08pm*

**math**

Find the coordinates of the midpoint of the segment whose endpoints are given. W (-3, -7) and X (-8, -4)
*Monday, July 14, 2014 at 5:48pm*

**math**

The Jones family was one of the first to come to the U.S. They had 5 children. Assuming that the probability of a child being a girl is .5, find the probability that the Jones family had.
*Monday, July 14, 2014 at 5:28pm*

**math**

Paul has 8 white socks, 4 blue socks,10 grey socks, and 12 black socks in his drawer. The socks are all jumbled up. What is the greatest number of socks that he would need to pull out to have a matching pair?
*Monday, July 14, 2014 at 4:35pm*

**math**

help It is known that a particular bipartition bacterium reproduces every 20 minutes, that is displayed 2 every 20 minutes. How many bacteria will last 10 hours
*Monday, July 14, 2014 at 3:53pm*

**math**

help A paper sheet of 0.1 mm thickness is taken. Is cut in two and placed one above the other; is a thickness of 0.2 mm. This roll is cut into two and put prte above the other; is a thickness of 0.4 mm. The next time the same process takes place, the stack is at a thickness of...
*Monday, July 14, 2014 at 3:50pm*

**math**

In an ordered (A – K, ♠♢♣♡) 52 card deck, using JUMP SEARCH, looking for the queen of hearts, a. What is the optimum jump size k? b. How many probes (m) will it take with the optimum jump size? c. What is the worst case number of comparisons using ...
*Monday, July 14, 2014 at 3:41pm*

**math**

In a shuffled deck of 52 cards, we remove 1 card (we don’t know which one) and use LINEAR SEARCH to find the two of clubs. a. What is the average cost to find the two of clubs, if it is guaranteed to be in the deck? b. What is the average cost if the two of clubs is ...
*Monday, July 14, 2014 at 3:37pm*

**Math**

Find three consecutive integers that have a sum of -402. Describe your strategy.
*Monday, July 14, 2014 at 2:48pm*

**math**

what is the sum from 1 to infinity of ( 3n^3 - 4n^2 + 5)/(6n^5-2n+7)
*Monday, July 14, 2014 at 2:18pm*

**math**

help please The measures of the sides of a right triangle form an arithmetic progression whose difference is 1. Find the measure of the hypotenuse
*Monday, July 14, 2014 at 1:54pm*

**math**

Help please find three consecutive numbers, which are in arithmetic progression whose sum is 39
*Monday, July 14, 2014 at 1:40pm*

**Math**

What power of 7 is 40 353 607?
*Monday, July 14, 2014 at 1:40pm*

**math**

help please 1. log2 x=1/2 2. log√x=-1 3. lnx=1+ln(x+1)
*Monday, July 14, 2014 at 1:14pm*

**Math**

There are 6 white, 9 brown, and 1 pink towels. What is the probability of using a brown or pink towel first.
*Monday, July 14, 2014 at 12:56pm*

**Math**

Continue the pattern for three more terms. Describe how to find the successive terms. a)12,9,6,3 b)5,6,8,11 c)3,-1,-6,-12 Please help
*Monday, July 14, 2014 at 12:16pm*

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