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January 31, 2015

January 31, 2015

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

two integers, x and y have a product of 20. what is the least possible sum of x and y?
*Thursday, December 11, 2014 at 11:12pm*

**Math**

Radical ((1-sinx)/(1+sinx))= (1-sinx)/cosx (absolute) Identity identity
*Thursday, December 11, 2014 at 11:08pm*

**Math**

1/2 * 6 + 9^2 - (18/6) = 42 Is my answer correct?
*Thursday, December 11, 2014 at 10:14pm*

**math**

I have a math question.two fielda ats state park are 1000 meters from each other.on a map,the two fields are 8 centimeters apart.What scale is the map using?is it the metric scale??
*Thursday, December 11, 2014 at 10:09pm*

**math**

a rectangle has an area of 20 square feet. A similar rectangle has an area of 180 sq feet. What is the ratio of the area of these similar rectangles? Is it 9 or maybe 3000??? Not sure. Please help....
*Thursday, December 11, 2014 at 9:59pm*

**Math**

Lora's gymnastics class practices floor exercises every other day. The class practices on the balance beam every third day, the uneven bars every fourth day. Today is March 10, and the class practiced all 3 events.How many more times, before June 1, will the class practice...
*Thursday, December 11, 2014 at 9:47pm*

**math**

noel started going to yoga class on november 3, and went every third day after that. Lana also started classes on november 3, and went every fourth day after that. In how many days will they be in class together again?
*Thursday, December 11, 2014 at 9:27pm*

**Math**

Use the digits 4'5'6'7' and 8 once each to write an odd five-digit number . Write it both in standard form and in word form
*Thursday, December 11, 2014 at 9:26pm*

**Math**

A fence is to be built to enclose a rectangular area of 310 square feet. The fence along three sides is to be made of material that costs 3 dollars per foot, and the material for the fourth side costs 14 dollars per foot. Find the dimensions of the enclosure that is most ...
*Thursday, December 11, 2014 at 9:23pm*

**Math- Geometry**

Given: Angle ABC is a right triangle with hypotenus AB D,E and F are midpts of the sides of the triangle Proof: a. CDEF is a rectangle b. EC is half of AB
*Thursday, December 11, 2014 at 9:19pm*

**Math **

Can you subtract two negative numbers and get a positive difference? What are some examples, if it's possible? Can you add two negative numbers and get a positive sum? (I fairly certain it's not possible, but I'm not sure how to explain why it's not...)
*Thursday, December 11, 2014 at 9:11pm*

**Math**

A fence is to be built to enclose a rectangular area of 310 square feet. The fence along three sides is to be made of material that costs 3 dollars per foot, and the material for the fourth side costs 14 dollars per foot. Find the dimensions of the enclosure that is most ...
*Thursday, December 11, 2014 at 9:08pm*

**Math**

Which is independent and which is dependent? The cost or the shirt?
*Thursday, December 11, 2014 at 9:04pm*

**math**

A store sells snacks by weight. A six ounce bag of mixed nuts costs $3.60. Will a two ounce bag of nuts cost more than or less than $1.25?
*Thursday, December 11, 2014 at 9:01pm*

**Math**

X is 1 2 3 4 5 Y is 98 96 94 92 90 What is Domain and Range? I know that Domain is all x and Range is all y but how would I put Domain and Range as an inequality
*Thursday, December 11, 2014 at 8:35pm*

**Math**

When Curtis was born, his parents began depositing $1000 at the end of every year into an annuity to save for his college education. If the account paid 7% compounded annually for the first 10 years and then dropped to 5% for the next eight years, how much is the account worth...
*Thursday, December 11, 2014 at 8:32pm*

**math**

Javia ran 8 laps to run a total of amile on monday how many laps will she need to run Tuesday to run 3/8 of a mile
*Thursday, December 11, 2014 at 8:30pm*

**Math-Calculus**

Find the point on the line -2x + 4y + 3 =0 which is closest to the point (-2,1). Note: I have been struggling on this for hours!
*Thursday, December 11, 2014 at 8:14pm*

**Math**

Ned folded a set of oragami figures. Of this set, 5/8 are cranes and 1/6 of the remainder are frogs. The rest are grasshoppers. What fraction of the origami figures are grasshoppers?
*Thursday, December 11, 2014 at 7:32pm*

**Math**

You had 13 of your allowance left on Monday. On Tuesday, you spent 13 of that amount of money. On Wednesday, you spent 13 of what you spent on Tuesday. What fraction of your total allowance did you spend on Wednesday?
*Thursday, December 11, 2014 at 7:30pm*

**Math**

Young and Company owes bond holders $5,500 interest at the end of each quarter for the next five years. How much must they deposit now at 8% interest compounded quarterly to yield an annuity payment of $5,500? -- I am pretty sure I know how to do the problem but I am just ...
*Thursday, December 11, 2014 at 7:24pm*

**3rd grade math**

Anna uses 1 eraser for every 2 packs of pencils she uses. If she uses 10 packs of pencils in a year, how many erasers will she use?
*Thursday, December 11, 2014 at 7:22pm*

**Math **

Sandy is buying t-shirts for her school's club. Company A charges 5.80 per shirt with no set up fee. Company B charges 5.75 per shirt plus a $35 set up fee
*Thursday, December 11, 2014 at 7:02pm*

**math**

how can we check that 46/100 is equal to about 39/85?
*Thursday, December 11, 2014 at 7:00pm*

**Math**

The temperature increased 56 in 4 hours , what was the change in temperature per hour
*Thursday, December 11, 2014 at 6:58pm*

**Math **

Malik is 10 years less than half his mothers age. I Malik is 12 years old, how old is his mother
*Thursday, December 11, 2014 at 6:38pm*

**7th grade math**

Anna walked 8 miles in 3 hours. Juan walked 14 miles in 5 hours. Are these rates in proportion? 8/3 divided 3/3 = 2.66/1= 2.66 14/5 divided 5/5= 2.80/1= 2.80
*Thursday, December 11, 2014 at 6:14pm*

**grade 10**

guys I don't know what career i can do coz I chose math literary - business studies-geography- tourism so if you can help mi plz guyz
*Thursday, December 11, 2014 at 6:08pm*

**Math **

The perimeter of a rectangle is 60cm. It's length is 6cm. What is its width?
*Thursday, December 11, 2014 at 5:57pm*

**Math**

A soccer team won two of its first twelve games.The team ended the season winning exactly half of the games it played.What is the fewest number of games the team could have played
*Thursday, December 11, 2014 at 5:07pm*

**Math**

How much does the cart weigh? Jason was hauling concrete blocks in a cart. When he had one block in the cart, the total weight of the cart with the block was 55 pounds. When he had 4 blocks in the cart, the total weight of the cart and the blocks was 146.5 pounds. How much did...
*Thursday, December 11, 2014 at 4:50pm*

**Math**

prove: 1/log(base36)a = 2/log(base6)a i made a common base and then multiplied both sides with log(base6)a to get 2=log(base6)a/log(base6^2)a but this is as far as i can figure.
*Thursday, December 11, 2014 at 4:45pm*

**Algebra**

Could you double check my math problem please? Thanks 4) −15 + n = −9 MY ANWSER: 6. Thank you :)
*Thursday, December 11, 2014 at 3:40pm*

**math**

The length of a piece of paper is 8.5 inches. Using scissors, you reduce the length of the paper to 4.25. What is the scale factor of the dilation? A- 1/4 B- 1/2 C- 2 D- 4 I think its A ?
*Thursday, December 11, 2014 at 3:40pm*

**Math**

In 1974, Johnny Miller won 8 tournaments on the PGA tour and accumulated $353,022 in official season earnings. In 1999, Tiger Woods accumulated $6,616,585 with a similar record. (a) Suppose the monthly inflation rate from 1974 to 1999 was 0.0079. Use the compound interest ...
*Thursday, December 11, 2014 at 3:24pm*

**math**

I go to Conexus and I am super duper behind do you happen to have the answers for the proportions quiz???????? PLEASE A c d c b a d
*Thursday, December 11, 2014 at 3:14pm*

**Middle School Math**

My home work problem is 3g+5=17 my answer is -20. A I correct.
*Thursday, December 11, 2014 at 2:31pm*

**math **

a baseball played 120 games during a season. The ratio of the number of games won to the total number of games played is 2/3. how many games did the team lose during the season? 120/1=2/3 360 divided by 2=180 or 120/x =2/3, 120 divided by 2 = 60
*Thursday, December 11, 2014 at 2:23pm*

**math**

A tree is 33 and one third ft tall. Why?
*Thursday, December 11, 2014 at 2:01pm*

**math show work please**

a bacteria colony doubles in 7hrs. How long does it tae the colony to triple Use N=No2^t/T. where No is the intial number of bacteria and T is the time in hours it take the colony to double.
*Thursday, December 11, 2014 at 1:48pm*

**math**

0.3 ÷ 0.06 Simplify the expression
*Thursday, December 11, 2014 at 1:44pm*

**math**

Four times the difference of 17 and a number is 84. Which equation below can be used to find the unknown number?
*Thursday, December 11, 2014 at 1:35pm*

**math**

A store sells small notebooks for $8 and large notebooks for $10. If you buy 6 notebooks and spend $56, how many of each size notebook did you buy? my answer: 7 small notebooks and 5 large notebooks is this right?
*Thursday, December 11, 2014 at 12:41pm*

**Math**

Your fishing bobber oscillates up and down from the current in the river in a harmonic motion. The bobber moves a total of 5.0 inches from its high point to its low point then returns up to the high point every 5 seconds. Write an equation modeling the motion of the bobber at ...
*Thursday, December 11, 2014 at 11:34am*

**Math**

A souvenir shop sells about 200 coffee mugs each month for 6$ each. The shop owner estimates that for each $0.50 increase in the price, he will sell about 10 fewer coffee mugs per month. a. How much should the owner charge for each mug in order to maximize the monthly income ...
*Thursday, December 11, 2014 at 11:28am*

**Math**

The function f(t)=37sin(pi/3 -5)+81 is used to represent the changes in temperature of a chemical compound used in a lab. What is the amplitude? I got 5, is this correct. I have the options of 81, 5, 6pi, 37, and 2
*Thursday, December 11, 2014 at 11:18am*

**Math**

Write the following comparison as a ratio reduced to lowest terms. 25 nickels to 38 dimes?
*Thursday, December 11, 2014 at 10:57am*

**Math **

At the amusement park, you decide to ride the Ferris wheel, which has a maximum height of 50 meters and a diameter of 35 meters. It takes the wheel 13 minutes to make one revolution. Write the sinusoidal function, f(t), that models the height of your chair at any time, t I got...
*Thursday, December 11, 2014 at 10:47am*

**Math**

What is the domain of this function f(x)=sin^-1 x?
*Thursday, December 11, 2014 at 10:36am*

**math**

the ratio of boys to girls in a club is 7:4, there are 21 fewer girls than boys , what is the total number of children in the club?
*Thursday, December 11, 2014 at 8:52am*

**Math**

What is 7r + -5
*Thursday, December 11, 2014 at 6:18am*

**math**

The Eye on Malaysia Park charges ticket for RM14 for an adult and RM8 for children. During the school holiday, the price of the children's ticket increased for about quarter than its normal price while the prices of adult's ticket are double. December last year, the ...
*Thursday, December 11, 2014 at 6:00am*

**math**

cylindrical tank of radius 4m and 7m high.if poured into the tank of 6m diameter .how high is the water?
*Thursday, December 11, 2014 at 3:47am*

**math**

what fraction must be added to the difference of 5/6 and 2/3 to have an average of 1/4
*Thursday, December 11, 2014 at 3:42am*

**math 120**

A recent poll of a random sample of 400 students at a public 4-year college showed the average (mean) amount of time spent using email was 49 minutes per day with a standard deviation of 44 minutes. a. find a 95% confidence interval fot the population mean
*Thursday, December 11, 2014 at 1:59am*

**6TH GRADE MATH**

Create a number line model that represents the equation below. -5 x -2 = 10 Can some help me please?
*Thursday, December 11, 2014 at 1:18am*

**Sixth Grade Math**

Leland wants to paint a portrait for his parents using a photograph of them that is 5 inches wide by 8 inches high. He wants the portrait to be proportional to the photograph and 42 inches high. Which proportion can Leland use to find w, the width he needs to use to make the ...
*Thursday, December 11, 2014 at 12:22am*

**Math**

Which decimal value is equivalent to 7/11? _ __ _ A. 0.63 B. 0.63 C. 0.675 D. 0.7 "B" is what I chose.
*Thursday, December 11, 2014 at 12:17am*

**Math **

Ken planted 8 flowers and 4 shrubs in his mother's garden. He ran out of fertilizer before he planted 2 of the flowers and 1 of the shrubs, so he planted them without fertilizer. What percentage of plants were planted without fertilizer? A. 12.5% B.25% C. 50% D. 75% My ...
*Wednesday, December 10, 2014 at 11:58pm*

**math**

A total of 121 people came to the school science fair this year. This is 7 more than twice the number of people who came to last years science fair. How many people came last year?
*Wednesday, December 10, 2014 at 11:28pm*

**Math**

An oil company owns two refineries. The daily production limits and operating costs for each refinery are given in the table below. An order is received for 1540 barrels of high-grade oil, 1650 barrels of medium-grade oil, and 2860 barrels of low-grade oil. How many days ...
*Wednesday, December 10, 2014 at 11:09pm*

**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%?
*Wednesday, December 10, 2014 at 11:07pm*

**Math 6th grade**

At lunch 3 1/4 small pizzas were equally devided into 4 people one person eats 1/4 of what he was given how much of a whole pizza did that person eat
*Wednesday, December 10, 2014 at 11:04pm*

**math**

A 6pack of undershirtsome cost $13.98. This is $3.96 less than the cost of buyingas 6 individual shirts. If each undershirt costs the same amount, how much does each undershirt cost when purchased individually?
*Wednesday, December 10, 2014 at 10:19pm*

**Math**

A pig farmer wants to enclose a rectangular area and then divide it into three pens with fencing parallel to one side of the rectangle (see the figure below). There are 940 feet of fencing available to complete the job. What is the largest possible total area of the three pens?
*Wednesday, December 10, 2014 at 10:08pm*

**math**

In the figure, xp and xt are opposite rays and xq bisects pxs. For each situation, provide the best possible answer.
*Wednesday, December 10, 2014 at 9:53pm*

**math**

about 79% of your class voted to have a pizza party on the last day of school.Your class has 31 students .Estimate how many students voted to have a pizza party
*Wednesday, December 10, 2014 at 9:44pm*

**Sixth Grade Math**

Lian's dog is 456 millimeters tall. How many centimeters tall is Lian's dog? Is 4.56 centimeters the correct answer?
*Wednesday, December 10, 2014 at 9:39pm*

**Math**

Which equation does NOT have the set of all numbers as its solution? 1. |-x| = |x| 2. ||x|| = |x| 3. |-x| = -(-(-x)) 4. -(-x) = x I need help with this problem.
*Wednesday, December 10, 2014 at 9:27pm*

**math**

which variable had greater variability number of hours of school work and the number of hours watching television
*Wednesday, December 10, 2014 at 9:11pm*

**Math**

What is a process table
*Wednesday, December 10, 2014 at 8:54pm*

**Sixth Grade Math**

Anthony took inventory of the automobiles on the sales lot of a car dealership. He planned to make a circle graph to show the different kinds of automobiles there were on the lot. The table below summarizes the data he collected. Types of Autombiles Coupes-40 Sedans-60 Suvs-21...
*Wednesday, December 10, 2014 at 8:33pm*

**Math**

How to find independent and dependent variables
*Wednesday, December 10, 2014 at 8:27pm*

**Math**

Tanya is 62 inches tall. She is 17 inches taller than May. Write an equation that can be used to find out May's height.
*Wednesday, December 10, 2014 at 8:24pm*

**Math solve the equation**

Can you help me to understanding this 7x = 72 9p = 30 Thank you for your help
*Wednesday, December 10, 2014 at 8:21pm*

**Estimating sums and differnces of fractions**

Hello! My 10 year old daughter is having trouble understanding these preparation questions from her math teacher. I know the answer but I don't know how to explain it to her.. I'm sorry if that doesn't make any sense. When I was in 5th grade they taught us ...
*Wednesday, December 10, 2014 at 8:18pm*

**MATH!**

the cost of a midnight madness movie ticket, is reduced by 2/5 of the original cost, to a cost of 3/5c. which expression is equivalent to the new cost? A)c-3/5c B)1-3/5c C)1-2/5c D)c-2/5c
*Wednesday, December 10, 2014 at 8:17pm*

**Math**

My child's teacher sent out questions to prepare for a big math test. He does not understand the questions well and I can't seem to get him to grasp it. I know the answer but could you show some easy methods or something, thank you! By the way, this is NOT graded so ...
*Wednesday, December 10, 2014 at 7:57pm*

**math**

the cost of a midnight madness movie ticket, is reduced by 2/5 of the original cost, to a cost of 3/5c. which expression is equivalent to the new cost? A)c-3/5c B)1-3/5c C)1-2/5c D)c-2/5c
*Wednesday, December 10, 2014 at 7:42pm*

**Discrete Math **

Each Student at a certain university is given a 6-digit code (such as 123789 or 001122) (a) how many different codes are there? (b) how many codes read the same forward and backward? (c) how many codes contain only odd digits? (d) how many codes contain at least one even digit?
*Wednesday, December 10, 2014 at 7:29pm*

**Math**

Caroline runs 3 1/2 miles in 22 1/4 minutes how many miles does she run per minute?
*Wednesday, December 10, 2014 at 7:28pm*

**math**

Alex's car takes 10 gallons of gas for 20.10 miles. If Shon's car uses 3/10 the amount of gas as Alex's car to travelled, what is the mileage for each person's car? How man gallons of gas would each need to travel 4.5 miles?
*Wednesday, December 10, 2014 at 7:10pm*

**math**

A rectangular closet has a perimeter of 10 feet. If the width of the closet is 3 feet, what is the length of the closet?
*Wednesday, December 10, 2014 at 7:05pm*

**Math**

Isaac gets paid $400.00 per week plus a commission $10.00 for every item he sells. Write the equation that shows the relationship between the number of items he sells and his weekly income.
*Wednesday, December 10, 2014 at 7:00pm*

**Math**

jody gets paid $200.00 per week, plus $100.00 for every oil change she completes. write the equation that shoes the relationship between the number of oil changes and her weekly income. then write the slope of the line that represents the relationship
*Wednesday, December 10, 2014 at 6:58pm*

**math**

A train ran for 6 minutes and 37 seconds in one mile. Another train travelled 7 minutes and 35 seconds in one mile. How long (minutes/seconds) would it take each train to travel 16 miles?
*Wednesday, December 10, 2014 at 6:50pm*

**pharmaceutical math**

You need to prepare 180g of a 10% cream using 30% stock cream and a cream base. How much is needed for each
*Wednesday, December 10, 2014 at 6:40pm*

**Math**

Find the critical points and the interval on which the given function is increasing or decreasing, and apply the First Derivative Test to each critical point f(x)= (7/4)x^4+(28/3)x^3+(-63/2)x^2-252x critical points in increasing order: c1=? min or max? c2=? min or max? c3=? ...
*Wednesday, December 10, 2014 at 6:37pm*

**math**

Q. At soap and suds there are 16 washing machines in a single row with no spa e between each one. Each washing machine is 2 feet 5 in inches across. What is the total length of the 16 washing machines. A. Do I divide 16 with 2,than mulpite my answer with 5?
*Wednesday, December 10, 2014 at 5:59pm*

**math**

Julianne earned $296 working at a grocery store last week. She earns $8 per hour. How many hours does did julianne work?
*Wednesday, December 10, 2014 at 5:44pm*

**math**

Ralph packs 9 three-fourth pound sacks of candy in each carton. How many pounds of candy is that?
*Wednesday, December 10, 2014 at 4:54pm*

**Math**

Tanya is 62 inches tall. She is 17 inches taller than May. Write an equation that can be used to find May's height. Please solve the equation.
*Wednesday, December 10, 2014 at 3:55pm*

**Math**

This expression 1.8C + 32, show how to convert from degrees Celcius to degrees Fahrenheit, where C represents the temperature in degrees Celcius. What is the temperature in degrees Farrenheit when the temperature is 25 degrees Celsius?
*Wednesday, December 10, 2014 at 3:52pm*

**Math**

You own 80 mp3s. You plan to add 10 more songs every month. Represent this relationship to show how many mp3s you have for th nxt six months. What is the independent x varible?
*Wednesday, December 10, 2014 at 3:50pm*

**Math**

When Curtis was born, his parents began depositing $1000 at the end of every year into an annuity to save for his college education. If the account paid 7% compounded annually for the first 10 years and then dropped to 5% for the next eight years, how much is the account worth...
*Wednesday, December 10, 2014 at 3:18pm*

**math**

Suppose you will be attending 6 hockey games. If each game independently will go to overtime with probability 0.10, find the probabililty that: a) at least one of the games will go into overtime
*Wednesday, December 10, 2014 at 3:12pm*

**math**

A company will need 50,000 in 6 years to add a new addition. To meet this goal a company depsoits money in account that pays 7% annual intrest quarterly. Find the amount that should be deposit today to reach the goal of 50,000 in 6 years. How much should the company deposit ...
*Wednesday, December 10, 2014 at 3:00pm*

**Math**

Can a triangle have side lengths 2, 3, and 5?
*Wednesday, December 10, 2014 at 1:58pm*

**Math**

Courtney and Kurtis are planning to travel 160 km in a car by travelling at x kilometres per hour for the first half of the distance, and then increasing their speed by 10 km/h to finish the distance. Which is the correct simplified expression for the total time of the trip? a...
*Wednesday, December 10, 2014 at 1:49pm*

**math**

Josh has 5/8 of a foot of plywood. To finish building the deck, he needs five time that amount. How many feet of plywood does Josh need? A.) 3 feet B.) 3 1/2 feet C.) 3 1/8 feet D.) 3 2/9 feet
*Wednesday, December 10, 2014 at 1:34pm*

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