Tuesday

September 2, 2014

September 2, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**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*

**Math**

About 190 million drivers are registered in the United States. While on a trip with her family, a student counted the number of male drivers and female drivers on the road. There were 58 male drivers and 48 female drivers. Using the sample predict the number of female drivers ...
*Monday, July 14, 2014 at 9:24am*

**Math**

Perform the given set operation. Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. (Enter your answers as a comma-separated list. Enter EMPTY for the empty set.) {1, 2, 8} ∩ {2, 8, 9}
*Sunday, July 13, 2014 at 11:19pm*

**Math**

In a survey of a TriDelt chapter with 50 members, 23 were taking mathematics, 32 were taking English, and 9 were taking both. How many were not taking either of these subjects?
*Sunday, July 13, 2014 at 11:17pm*

**Math**

How do you subtract time? 5:44am-14hrs=? Are there multiples way of figuring this out?
*Sunday, July 13, 2014 at 7:26pm*

**math**

A building is 17 ft high, what is the lenght the ladder must be to extend 3 ft higher than wall
*Sunday, July 13, 2014 at 5:26pm*

**math**

A section of the highway rises 15 feet in a mile, calculate the grade.
*Sunday, July 13, 2014 at 3:21pm*

**Math**

How do I simplify -4(-5x-u)-2(3u-2x)
*Sunday, July 13, 2014 at 3:16pm*

**Math**

what is -4 (-w+4x-2)?
*Sunday, July 13, 2014 at 3:02pm*

**Math**

what is 5 - / 8 6
*Sunday, July 13, 2014 at 2:43pm*

**Math 221**

Math 221 - Ms. Sue, Sunday, July 13, 2014 at 2:24pm I've done several problems for you. Now it's your turn. How do you think this problem should be solved? Answer this Question I was thinking that I should multiply the numerators and denominators
*Sunday, July 13, 2014 at 2:25pm*

**Math 221**

What is 5/12+7/9 in simplest form
*Sunday, July 13, 2014 at 2:22pm*

**Math 221**

What is 78 over 25 as a decimal?
*Sunday, July 13, 2014 at 2:15pm*

**Math 221**

what is the perimeter of a square using 13ft. Math 221 - Ms. Sue, Sunday, July 13, 2014 at 1:56pm Is 13 ft the length of a side of the square? yes
*Sunday, July 13, 2014 at 1:58pm*

**Math 221**

what is the perimeter of a square using 13ft.
*Sunday, July 13, 2014 at 1:53pm*

**Math 221**

Math 221 - Ms. Sue, Sunday, July 13, 2014 at 1:22pm (13/15) / (7/10) (13/15) * (10/7) = Multiply the numerators together. Multiply the denominators together. What do you get? Math 221 - Erica, Sunday, July 13, 2014 at 1:26pm The answer that I got was 13x10=130 and 15x7=105 ...
*Sunday, July 13, 2014 at 1:37pm*

**Math 221**

what is 13/15 divided by 7/10
*Sunday, July 13, 2014 at 1:19pm*

**Math 221**

6.25,16.1, and 9 is what length in meters
*Sunday, July 13, 2014 at 1:16pm*

**Math 221**

What is 9/10+3/8=
*Sunday, July 13, 2014 at 1:05pm*

**math**

An employee at a marketing firm A student uses approximately 40 to 45 gallons of gasoline per month. The cost of gasoline varies between $2.96 and $3.61 per gallon. Which of the following is a reasonable estimate of the student's weekly gasoline expense? A. $15 B.$30 c. $...
*Sunday, July 13, 2014 at 11:30am*

**math**

In a bag of candy, there are five red candies for every two green candies. If there are 35 total candies in the bag, which of the following is the total number of green candies in the bag? A.5 B. 10 C. 20 D. 25
*Sunday, July 13, 2014 at 11:20am*

**math**

A student uses approximately 40 to 45 gallons of gasoline per month. The cost of gasoline varies between $2.96 and $3.61 per gallon. Which of the following is a reasonable estimate of the student's weekly gasoline expense? A. $15 B.$30 c. $45 D. $50
*Sunday, July 13, 2014 at 11:10am*

**math**

If half of the undecided voters vote for Candidate 1 and the other half vote for Candidate 2, which of the following is the number of votes Candidate 2 will receive? A. 45 B. 63 C. 69 D.0.87
*Sunday, July 13, 2014 at 11:08am*

**math**

. Every member of a high school class of 150 students was polled to see whom they would vote for in the election for student body president. The poll results are shown below. Candidate 1 46% Candidate 2 30% Undecided 24%
*Sunday, July 13, 2014 at 11:03am*

**math**

Every member of a high school class of 150 students was polled to see whom they would vote for in the election for student body president. The poll results are shown below.
*Sunday, July 13, 2014 at 11:03am*

**math**

(4x-3y)2 Simplify the expression above. Which of the following is correct? A. 16x2 + 9y2 B. 16x2-9y2 C. 16x2 -24xy -9y2 D. 16x2 -24xy+9y2
*Sunday, July 13, 2014 at 11:00am*

**math**

Which of the following is the best estimate of the number of centimeters in 1 yard? (Note: 1 yard = 3 feet; 1 foot= 12 inches; 1 inch= 2.54 centimeters) A. 36 B. 72 C. 90 D. 180
*Sunday, July 13, 2014 at 10:50am*

**math**

Two restaurants have rooms to rent for dinner parties. One restaurant charges $100 to rent a room and $20 per person. The other restaurant charges $25 to rent the room and $25 per person. Which of the following is the number of people for which the cost of a dinner party would...
*Sunday, July 13, 2014 at 10:48am*

**math**

A temperature gauge reads 95° F. Which of the following is the correct conversion to degrees Celsius? (Note: ° C = 5/ g[° F -32]) A. 21° C B. 35° C c. 63° c D. 113° C
*Sunday, July 13, 2014 at 10:39am*

**math**

. A rectangle has a perimeter of 24 units. If the width is 4 units, which of the following is the length? A. 6 units B. 8 units C. 10 units D. 16 units
*Sunday, July 13, 2014 at 10:35am*

**math**

2 5/8+ 1/3 Simplify the expression above. Which of the following is correct? A. 7 7/8 B. 1 1/7 C. 7/8 D. 8/63
*Sunday, July 13, 2014 at 10:33am*

**Math**

|X+4| = |3X+10|
*Sunday, July 13, 2014 at 9:08am*

**Math**

Absolute value equation |1-X| = 2X-5
*Sunday, July 13, 2014 at 8:51am*

**Math**

Make a vertical line of any measurement on the horizontal line. Write down its length in cm and mm
*Sunday, July 13, 2014 at 12:42am*

**Math**

The plan for a rectangular patio has a square garden centered in the patio with sides parallel to the sides of the patio. The patio is 20m long and 12m wide. If each side of the garden is "x" meters, the function, y= 240-x^2 gives the area of the patio in m^2. What ...
*Sunday, July 13, 2014 at 12:25am*

**Math**

There are 7 red skittles, 15 green skittles and 3 blue skittles in a bag.You reach into a bag and pick a skittle. You then put it back into the bag. You then reach into the bag and pick a skittle. What is the probability that you chose 2 green skittles? Reiny wrote prob(2 ...
*Saturday, July 12, 2014 at 11:33pm*

**Math**

There are 7 red skittles, 15 green skittles and 3 blue skittles in a bag.You reach into a bag and pick a skittle. You then put it back into the bag. You then reach into the bag and pick a skittle. What is the probability that you chose 2 green skittles?
*Saturday, July 12, 2014 at 9:59pm*

**math**

Fred earns $56 a week. 0.0613 of his pay is taken out for Social Security. To the nearest cent how much is taken out each week?
*Saturday, July 12, 2014 at 5:46pm*

**Math**

Find the equation of the regression line and predict y when x = 2.5. x - 1 5 4 2 3 6 y - 25 5 10 20 15 5
*Saturday, July 12, 2014 at 5:03pm*

**Math**

Find the equation of the regression line. x - 12 14 10 9 15 8 y - 29 35 28 23 36 18
*Saturday, July 12, 2014 at 5:01pm*

**Math**

The average hourly wage of employees of a certain company is $14.24. Assume the variable is normally distributed. If the standard deviation is $3.27, find the probability that a randomly selected employee earns more than $18.98.
*Saturday, July 12, 2014 at 5:00pm*

**Math**

Use the equation of the regression line to predict y when x = 11. x - 2 4 3 5 1 y - 9 12 11 14 6
*Saturday, July 12, 2014 at 5:00pm*

**Math**

Use the equation of the regression line to predict y when x = 20. x - 5 8 6 10 12 9 y - 18 20 15 25 30 25
*Saturday, July 12, 2014 at 4:58pm*

**Math**

A boat sails 40km from point A to point B, east of A on a lake. Lodge P is south of point A. Another lodge Q is south of point B. The bearing of Q from point A is S52degresE and the bearing of P from B is S39degresW. If P is 60km from Q, calculate the bearing of lodge Q from ...
*Saturday, July 12, 2014 at 4:58pm*

**Math**

The average hourly wage of employees of a certain company is $14.58. Assume the variable is normally distributed. If the standard deviation is $3.99, find the probability that a randomly selected employee earns less than $9.79.
*Saturday, July 12, 2014 at 4:57pm*

**Math**

The average amount customers at a certain grocery store spend yearly is $784.39. Assume the variable is normally distributed. If the standard deviation is $76.15, find the probability that a randomly selected customer spends between $712.05 and $932.88.
*Saturday, July 12, 2014 at 4:56pm*

**Math**

Suppose the average size (in square feet) of homes in a certain region is 1747. Assume the variable is normally distributed with standard deviation 220. If a person in the region was intending to build a 1890 square foot home but downsized and built a 1274 square foot home, ...
*Saturday, July 12, 2014 at 4:56pm*

**Math**

Find the value for the correlation coefficient r. x - 21 30 25 24 29 y - 49 41 31 36 39
*Saturday, July 12, 2014 at 4:55pm*

**Math**

Find the area under the normal distribution curve to the left of z = 2.35.
*Saturday, July 12, 2014 at 4:06pm*

**Math**

Find the area under the normal distribution curve to the left of z = –1.50.
*Saturday, July 12, 2014 at 4:05pm*

**Math**

Find the area under the normal distribution curve between z = 0.35 and z = 2.95.
*Saturday, July 12, 2014 at 4:05pm*

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