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February 28, 2015

February 28, 2015

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

A number consist of two digits whose sum is 8. if 18 is added to the number its digits are reversed. find the number.
*Thursday, January 15, 2015 at 6:16am*

**MAth Igcse**

The angle of elevation of the top of a tower is 27 degrees from point A due east of it. The angle of elevation of the top of the tower is 11 degrees from another point B due south of the tower. Find the height of the tower if the distance AB is 40m.
*Thursday, January 15, 2015 at 5:09am*

**precalculus**

Sin(x+y)cos(x-y)= 1/2sin2x+ 1/2 sin2y Help please I have no idea how to do this because my math class never did it but while making the final review for the chapter I was assigned, I put this one in it. They are going to all ask me how to do it. Sin(x+y)cos(x-y)= 1/2sin2x+ 1/...
*Thursday, January 15, 2015 at 3:12am*

**math**

al has 7 1/2 pounds of flour. he used 3/4 of the flour to make bagels. how many pounds of flour did he use?
*Thursday, January 15, 2015 at 1:45am*

**math(5th grade)**

Garrett reads 2.8 pages in 3.5 minutes how much does Garrett read in 31.5 minutes
*Thursday, January 15, 2015 at 12:49am*

**math**

how many cars are there in a long freight train, if it takes the entire train 4.50 minutes to pass a station at 25.0 miles per hour? Each car is 45.0 feet long. There are 5280.0 feet in a mile.
*Thursday, January 15, 2015 at 12:48am*

**math**

The scale of the map is missing.The actual distance from Liberty to West Quall is 72 miles,and it is 6 inches on the map. (A)What is the scale of the map? (B)Foston is between Liberty and West Quall and is 4 inches from Liberty on the map.How far is Foston from West Quall?
*Thursday, January 15, 2015 at 12:22am*

**math**

factorise 4(x-y)^3-(x-y)
*Thursday, January 15, 2015 at 12:15am*

**Math**

Find T 2200=7500/(1+9e^-o.o21972*T) Can I multiply both sides by 1+9e^-0.021972*T ?
*Wednesday, January 14, 2015 at 11:57pm*

**Math**

When Minnesota became a state in 1858 there were approximately 150,000 people living here. in the 2010 census the population for Minnesota was 5,303,925 people. Find a model that would apprxoimate the population in Minnesota between 1858 and 2010. Let t=0 correspond to 1858. ...
*Wednesday, January 14, 2015 at 11:32pm*

**Math**

Henry Devine bought a new dishwasher for $320. He paid $20 down and made 10 monthly payments of $34. What actual yearly interest rate did Henry pay? A. 68.75 B. 14.55 C. 34.38 D. 29.09 The answer is B?
*Wednesday, January 14, 2015 at 11:19pm*

**Math**

. If three bags of birdseed cost $14.16, how much will 14 bags cost? A. $33.71 B. $30.34 C. $70.80 D.$66.08 The answer is D?
*Wednesday, January 14, 2015 at 11:03pm*

**Math**

Carlos Martin received a statement from his bank showing a balance of $56.75 as of March 15th. His checkbook shows a balance of $87.37 as of March 20. The bank returned all the cancelled checks but two. One check was for $5.00 and the other was for $13.25. How much did Carlos ...
*Wednesday, January 14, 2015 at 10:52pm*

**Math**

Can someone check my answer down below?
*Wednesday, January 14, 2015 at 10:41pm*

**Math**

I don't know how to solve this problem. Cameron can run3.6 miles for every 1.9 miles that Samantha ran. If Samantha ran 7.4 miles, how far did Cameron run.
*Wednesday, January 14, 2015 at 10:29pm*

**math**

what is the ratio of the measurements 6/12=2.5/5 in simplest form a.2:1 b.6:12 c.1:2 d.none of these
*Wednesday, January 14, 2015 at 10:26pm*

**Math**

In a jar the number of blue marbles = twice the number of red marbles! there are 24 more blue marbles than red. How many red and blue marbles are in the jar?
*Wednesday, January 14, 2015 at 10:25pm*

**math**

The line y=16x intersects the quadratic function y=x^2 at two points. What are the coordinates of the two points of intersection?
*Wednesday, January 14, 2015 at 10:21pm*

**Math**

Carlos Martin received a statement from his bank showing a balance of $56.75 as of March 15th. His checkbook shows a balance of $87.37 as of March 20. The bank returned all the cancelled checks but two. One check was for $5.00 and the other was for $13.25. How much did Carlos ...
*Wednesday, January 14, 2015 at 10:17pm*

**math**

there is to right traingles and we have to find the missing side the first traingle has 4 on the bottom and 2 as its height the second trangle has a 9 on the bottom and the x as the height which number is x. a.4.5 b.18 c.8 d.2.25 i think a
*Wednesday, January 14, 2015 at 10:10pm*

**math**

Hi could you see if I did this one right The pie chart below shows how the total annual income for a certain family is spent. If the amount budgeted for Housing and Entertainment combined is$25,200 , what is the total family income? Housing is 22% and entertainment is 14%. I ...
*Wednesday, January 14, 2015 at 10:04pm*

**math**

Solve the following system of equations: y=4x y=2x^2
*Wednesday, January 14, 2015 at 10:01pm*

**math**

What are the solutions for the following system of equations? y=8x+7 y=-x^2-5x+7
*Wednesday, January 14, 2015 at 9:56pm*

**math**

The line y=9x-4 intersects the quadratic function y=x^2+7x at one point. What are the coordinates of the point of intersection?
*Wednesday, January 14, 2015 at 9:56pm*

**math**

12/6 =5/2.5 a.2:1 b.6:12 c.1:2 d.none of these
*Wednesday, January 14, 2015 at 9:52pm*

**Consumer math**

John Davis makes $9.75 an hour. He works four hours on Monday, six hours on Tuesday, five hours on Wednesday, five hours on Thursday, and seven hours on Friday. What is his gross pay? A. $132.70 B. $174.20 C. $269.98 D...
*Wednesday, January 14, 2015 at 9:32pm*

**Math**

Solve the following system of equations using both substitutio and elimination y=-x+4 y=-2x-4 Do I do what I do with the previous problems
*Wednesday, January 14, 2015 at 9:07pm*

**Math**

The letter of application is intended to A. accompany your portfolio. B. remind the prospective employer of your recent interview. C. outline your value to a prospective employer. D. find out what the prospective ...
*Wednesday, January 14, 2015 at 9:05pm*

**Math**

5x-4y=10 -10x+2y=-20 If x is 2 what would y be? When I plug it in I get y as 0
*Wednesday, January 14, 2015 at 8:56pm*

**Math**

2x-5y=53 -x+5y=-44 Find x and y for both equations My answer : x=9 and y=-7?
*Wednesday, January 14, 2015 at 8:54pm*

**math**

eliza has a piece of string that is 130 cm long how much will she have to cut to make 1 meter
*Wednesday, January 14, 2015 at 8:53pm*

**Math**

The top of Kevin's dining room table is 4 feet long, and 3 feet wide. Kevin wants to cover the middle of the table with tiles. He plans to leave a 6 inch border around the edge of the table and tile in the center. How many square feet of tile will he need?
*Wednesday, January 14, 2015 at 8:52pm*

**Math**

-3x+5y=80 4x-5y=-90 What are the x and y for both equations
*Wednesday, January 14, 2015 at 8:36pm*

**math**

At a given time, Saturn was 9.1 x 10 to the 8th miles from the sun and the earth was 9.3 x 10 to the 7th miles from the sun. by what distance is one planet closer to the sun than the other planets?
*Wednesday, January 14, 2015 at 8:17pm*

**Sixth Grade Math**

Last year, Mark was 46 inches tall. This year, Mark's height is 3 inches less than Pter's height. Peter is 51 inches tall. How tall is Mark? Write an equation to represent the situation. Then solve the equation. Answer: 51-3=I I=48 inches tall I=number of inches Did I ...
*Wednesday, January 14, 2015 at 8:13pm*

**MATH!!!! AHHH!!!**

Im studying for finals! A system of equations is shown below: 8x + 5y = 9 3x + 2y = 4 Part A: Create an equivalent system of equations by replacing one equation with the sum of that equation and a multiple of the other. Show the steps to do this. Part B: Show that the ...
*Wednesday, January 14, 2015 at 8:11pm*

**Math**

The letter of application is intended to A. accompany your portfolio. B. remind the prospective employer of your recent interview. C. outline your value to a prospective employer. D. find out what the ...
*Wednesday, January 14, 2015 at 8:03pm*

**Math**

5x-4y=10 -10x+2y=-20 What are the values of the x and y for both equations
*Wednesday, January 14, 2015 at 7:53pm*

**Math**

about 24.8 million people live in texas. about 0.6 million live in vermont. how many times as many people live in texas than in vermont. round to the nearest tenth if necessary. i got 41.333 (41) as my answer.am i correct
*Wednesday, January 14, 2015 at 7:49pm*

**Math**

Phil Smith is a car salesman. Last week his total sales amounted to $27,650.00, and he received $1,382.50 in commission. What is his rate of commission? A. 4.8 percent B. 5 percent C. 23 percent D. 17 percent I think C or...
*Wednesday, January 14, 2015 at 7:46pm*

**Math**

The tax rate on Ned Topolino's $112,000 vacation home is 25 mills. The property is assessed at full value. How much will Ned pay in taxes this year? A. $2,800 B. $780 C. $7,800 D. $28,000 A?
*Wednesday, January 14, 2015 at 7:31pm*

**math**

China population is approximately 1.325 billion. The United States has approximately 0.304 billion. How many times as many people live in China than in the U.S. Round to the nearest tenth if necessary.
*Wednesday, January 14, 2015 at 7:30pm*

**math**

lake superior has a maximum depth of 1.333 thousand feet. there are 5,280 feet in one mile. how deep is lake superior in miles? round to the nearest hundredth if necessary. explain the answer
*Wednesday, January 14, 2015 at 7:25pm*

**Math**

Mr. Jenkins is going to buy museum tickets for a class trip. The museum director quotes him the following prices: • 20 tickets cost a total of $250. • 30 tickets cost a total of $375. • 50 tickets cost a total of $625. a. Based on these prices, is the cost of ...
*Wednesday, January 14, 2015 at 7:08pm*

**Math**

Fiona earns $15 for each lawn she mows. What is the inequality to find out how many lawns she must mow to earn at least $135. My answer 15m <_ 135 M<_ 9
*Wednesday, January 14, 2015 at 6:39pm*

**Math**

4. Jan Quint earns $7.00 an hour at her job and is entitled to time-and-a-half for overtime, and double time on holidays. Last week she worked 40 hours of regular time, 9 hours of overtime, and 12 hours of holiday time. How much did she earn last week? ...
*Wednesday, January 14, 2015 at 6:39pm*

**Math**

Gabriella is x years old.Her sister Felicia,is six years old than she is.Their mother is twice as old as Felicia.Their aunt,Tanya,is x years older than their mother.Write and simplify an expression that represents Tanya's age in years.
*Wednesday, January 14, 2015 at 6:39pm*

**math**

I have to find the unit rate 3\5 divided by 3\8 and ui can't figure out how you would get 3\8 to one?
*Wednesday, January 14, 2015 at 6:39pm*

**math**

Laura’s pet bunny, Ghost, hops up a flight of 12 stairs. Ghost can hop up one or two steps at a time, and never hops down. How many ways can Ghost reach the top
*Wednesday, January 14, 2015 at 6:35pm*

**Math**

8x+5=4x-7 I put x=-3
*Wednesday, January 14, 2015 at 6:27pm*

**Math**

Laney buys 3 containers of yogurt. She has coupons for $0.35 off the regular price of each container. After using the coupons, the total cost of the yogurt is $3.45. What is the regular price of a container of yogurt? ?????? No idea
*Wednesday, January 14, 2015 at 6:25pm*

**math**

what is the total cost for 4 1/10 pounds of vanilla pudding? vanilla pudding=$7/lb
*Wednesday, January 14, 2015 at 6:18pm*

**Math **

A true crab has 4 fewer than twice the number of legs that a hermit crab has. The hermit crab has 6 legs. How many legs does the true crab have? I put for the equation 4c =6 *2 I am confused
*Wednesday, January 14, 2015 at 6:16pm*

**Math**

Julie, Samantha and Dave ate 5416 crackers last year. Julie ate 1615 crackers. Samantha ate 6 times as many as dave. How many crackers did Samantha eat?
*Wednesday, January 14, 2015 at 6:07pm*

**Math**

Dylan ate 0.4 of the his brother ate 3/10 of the pie Who ate more
*Wednesday, January 14, 2015 at 6:04pm*

**Math equation**

Question1 The difference of a number and 7 is -8 I put n-7=-8 Is that correct? Question 2 Six less than the product of four and a number is -5 I put 6-4n= -5
*Wednesday, January 14, 2015 at 5:58pm*

**math**

Question: You can type 115 words in three minutes. About how many words can you type in seven minutes?
*Wednesday, January 14, 2015 at 5:52pm*

**math**

An observer stands 25 feet from the base of a 50 foot flagpole and watches a flag being lowered at a rate of 5 ft/sec. Determine the rare at which the angle of elevation from the observer to the flag is changing at the instant that the flag is 25 ft. Keep getting like .1 or .2...
*Wednesday, January 14, 2015 at 5:49pm*

**Math**

3. The tax rate on Harriet Walker's $80,000 vacation home is 20 mills. The property is assessed at full value. How much will Harriet Walker pay in taxes this year? A. $1,600 B. $2,000 C. $640 D. $440 B?
*Wednesday, January 14, 2015 at 5:48pm*

**Math**

A 120-ft long playground is just 15-in on the scale drawing.What is the scale on the scale drawing? How would you solve this question?
*Wednesday, January 14, 2015 at 5:43pm*

**Math **

1/9x + 3= -1 I put 1/9x =2 X=18
*Wednesday, January 14, 2015 at 5:34pm*

**Math 7th grade**

1/15 =3/5m For my answer, I put m= 1/5 Is that correct?
*Wednesday, January 14, 2015 at 5:17pm*

**Math.**

A new $20 weighs approximately 0.5 gram. Write a linear function that shows the weight of x $20 bills. - Part b. How much do 120 $20 bills weigh? Please Help!!
*Wednesday, January 14, 2015 at 5:15pm*

**Math**

7x-10x=9 My answer x= -3
*Wednesday, January 14, 2015 at 5:13pm*

**Math**

An annual pass covering entrance fees to more than 2000 national parks cost $80. If the total income from the annual passes is $12,800 in one month. Write the equation and solve it. For my equation I put 12800p=80
*Wednesday, January 14, 2015 at 5:11pm*

**math**

4 PART Your weight on different planets is affected by gravity. An object that weighs 150 pounds on Earth weighs only 56.55 pounds on Mars. The same object weighs only 24.9 pounds on the Moon. A)What percent of an object's Earth weight is its weight on Mars and on the Moon...
*Wednesday, January 14, 2015 at 5:00pm*

**math**

I just want to see if my answers are correct and if no, can you please show your work and explain how to do it? Thank you. A. (x^1/2)^4√x^6 I got an answer of x^2x B. √x^4y^12 I got an answer of xy C. 3√a^6b^3 I got an answer of a^2b D. (x^1/3y)^3√x^2y^...
*Wednesday, January 14, 2015 at 4:56pm*

**math**

I just want to see if my answers are correct and if no, can you please show your work and explain how to do it? Thank you. A. (x^1/2)^4√x^6 I got an answer of x^2x B. √x^4y^12 I got an answer of xy C. 3√a^6b^3 I got an answer of a^2b D. (x^1/3y)^3√x^2y^...
*Wednesday, January 14, 2015 at 4:31pm*

**Math**

Andie bought 4.85 meters of cord. The cord costs $0.98 per meter. What was the total cost of the cord? My answer is $5.83 Is that correct?
*Wednesday, January 14, 2015 at 4:06pm*

**Math**

Write an expression that is equivalent to 6(4+x)
*Wednesday, January 14, 2015 at 4:01pm*

**math**

the waiting time for a roller coaster is 20 minutes if 150 people are in line how long will you wait if 240 people are in line
*Wednesday, January 14, 2015 at 3:25pm*

**math**

a shopkeeper after allowing a discount of 10% on the market price makes a profit of 8%.what percent above the cost price is it market.
*Wednesday, January 14, 2015 at 2:36pm*

**math**

Does the Commutative Property apply to this situation? I ate dinner and read a book. I got = Yes.
*Wednesday, January 14, 2015 at 2:18pm*

**math**

If Jim is twice as old as Jerry plus six, Jerry is three years older than Tom, and Tom is 12, how old is Jim? I got = Jim is 36
*Wednesday, January 14, 2015 at 1:55pm*

**math**

whats 9+10
*Wednesday, January 14, 2015 at 12:52pm*

**math**

Log[u/v] × log [s/t]
*Wednesday, January 14, 2015 at 12:51pm*

**Math**

Could someone please show how this is done or explain how to do it. thank you The pie chart below shows how the annual budget for a certain company is divided by department. If the amount budgeted for Editorial and Engineering combined is , what is the total annual budget? ...
*Wednesday, January 14, 2015 at 12:46pm*

**math**

You need to hire a part-time associate to work 30 hours a week in your store. You have $250 in labor budget for the new associate each week. You just interviewed an excellent candidate for the position who has requested to be paid $9.00 per hour. Your average part-time ...
*Wednesday, January 14, 2015 at 12:20pm*

**math**

how to slove 35cents:$2.25 in ratio
*Wednesday, January 14, 2015 at 11:04am*

**Math**

5. A system of linear inequalities is shown below: x + y ≥ 4 y < 2x – 3 Describe the steps to graph the solution set to the system of inequalities. Be specific. (10 points)
*Wednesday, January 14, 2015 at 9:07am*

**math**

you have 2 pennies, 3 nickels, 1 dime and 2 quarters. how many different sums of money can you make using one or more of these 8 coins
*Wednesday, January 14, 2015 at 9:01am*

**B.S,geography,agricultural sciences and math l**

will i be able to study low at ukzn or tut or wherever with my learing areas
*Wednesday, January 14, 2015 at 4:42am*

**B.S,geography,agricultural sciences and math l**

will i be able to do nursing at ukzn with those subjects
*Wednesday, January 14, 2015 at 4:39am*

**math pow**

there are about 20 potatoes in a five pound bag and restaurant uses about two potatoes per order of french fries how much money does the restaurant taking on a day that they use 400 pounds of potatoes
*Tuesday, January 13, 2015 at 11:18pm*

**math**

A bag contains the following marbles:6 red,4 orange,3 yellow,2 blue and 5 green. You choose a marble at random and do not replace it. Then you select another marble. P(red,then blue)3/95 P(orange,then blue) 2/95 P(blue,then yellow) 3/190 P(red,then yellow) 9/190 P(blue,then ...
*Tuesday, January 13, 2015 at 10:22pm*

**Math**

Of the vehicles on the road, 1/2 are cars and 1/8 are motorcycles. What fraction of the vehicles are not cars or motorcycles?
*Tuesday, January 13, 2015 at 10:19pm*

**math**

If the width of the image is 5 inches and the width of the preimage was x. What is the scale factor and center of dilation at the origin
*Tuesday, January 13, 2015 at 10:16pm*

**Math**

Jeffrey biked to the store at 12 miles an hour but took his time on the way home going 8 miles an hour. If it took him 20 minutes to get to the store, how many minutes did it take him to get back?
*Tuesday, January 13, 2015 at 10:12pm*

**Math**

Example of a real-world relationship where there is no clear independent or dependent variable.
*Tuesday, January 13, 2015 at 10:12pm*

**Math**

Given f(x)=-2-3x-x^2 , find f(1+k)
*Tuesday, January 13, 2015 at 10:11pm*

**Math **

Elizabeth took 13 minutes less than twice as long as Heather to solve the puzzle if their total time together was 23 minutes who took less time to solve the puzzle? How much less?
*Tuesday, January 13, 2015 at 10:11pm*

**Math**

The 80 8th graders took a trip. The boys numbered 16 fewer than twice the number of girls. How many of the eighth graders are girls?
*Tuesday, January 13, 2015 at 10:09pm*

**math**

For a carnival game, a cube is rolled.Each of its six faces has a different color. To win,you must select the color rolled.Find the probability of playing the carnival game twice and winning both times. B.suppose for the game,you choose red and your friend picks blue. What is ...
*Tuesday, January 13, 2015 at 10:06pm*

**Math**

A flagpole casts a shadow of 23.5 feet long.at the same time of day, Ana, who is 5.5 feet tall, casts a shadow that is 7.5 feet long. How tall in feet is the flagpole?
*Tuesday, January 13, 2015 at 9:24pm*

**Math**

ling has 4m pounds of flour. she buys another 2 packages of flour, each weighing m pounds. how much pounds does ling have in terms of m
*Tuesday, January 13, 2015 at 9:04pm*

**Math**

It takes Jaiden 5 and 3/4 hours to do her homework each week. It takes her 2 and 3/4 hours to complete her science and 1 and 1/2 hours to complete her math homework. How long does it take her to complete Social Studies homework? Use the numbers and symbols, listed below, to ...
*Tuesday, January 13, 2015 at 8:57pm*

**Algebra- Middle**

My math question ask is 1/3(x-9) = 2x+7 greater than or less than 4/3(x+4)= -4x. The problem (1) answer = 6. Problem (2) answer = -1. Therefore problem (2) is less than problem (1). Are the answer to the equations correct. Sincerely
*Tuesday, January 13, 2015 at 8:34pm*

**math**

Problem: A ball is dropped from the top of a building that is 250 feet tall. The height h of the ball in feet after t seconds is modeled by the function h = -16t2 +250. How long will it take for the ball to reach the ground? Round your answer to the nearest tenth if necessary.
*Tuesday, January 13, 2015 at 8:31pm*

**Math**

On a winter's day, 9 degrees Fahrenheit is th highest temperature recorded. Which inequality represents the temperature, t, in degrees Fahrenheit, at any time on this day?
*Tuesday, January 13, 2015 at 8:09pm*

**algebra**

My math problem is -2(2+3)-2k = -2-4(2+2) My answer is k=20 is this answer correct.
*Tuesday, January 13, 2015 at 8:06pm*

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