Friday

March 27, 2015

March 27, 2015

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math Word Problems**

If I have 12 brownies and Sue eats 2/3 of them, how many do I have left? Please show me the work.
*Tuesday, March 10, 2015 at 2:07pm*

**Math Word Problems**

Roger bought a sandwich with half of his money and a candy bar with one fifth of his money. How much of his money did he spend ? Please show all the work.
*Tuesday, March 10, 2015 at 2:05pm*

**Math **

What is 15 - 7 2/5 =?
*Tuesday, March 10, 2015 at 2:00pm*

**Math**

Add the following. 2/6 + 3/5 + 2/5 + 4/8 + 4/6 =? Please show all the work.
*Tuesday, March 10, 2015 at 1:23pm*

**Math **

What is 23 - 4/6 =? Please show all the work.
*Tuesday, March 10, 2015 at 1:21pm*

**Math questions**

Please Help me! What is 8 3/4 - 5 5/6 =?
*Tuesday, March 10, 2015 at 1:18pm*

**math**

Anais bought 4 1/2 yards of ribbon. She had 3 feet 8 inches of ribbon left after trimming some curtains. How many inches of ribbon did Anais use to trim the curtains? Anais used _____ inches of ribbon.
*Tuesday, March 10, 2015 at 1:09pm*

**math**

If a boat uses 24 GALLONS OF GAS TO GO 69 MILES, HOW MANY MILES CAN THE boat travel on 96 gallons of gas
*Tuesday, March 10, 2015 at 11:37am*

**math**

If a boat uses 21 GALLONS OF GAS TO GO 80 MILES, HOW MANY MILES CAN THE boat travel on 105 gallons of gas
*Tuesday, March 10, 2015 at 11:35am*

**Math**

18 students in a class play baseball. 17 students in the class play basketball. 30 students in the class play either or both sports. Select the vend diagram that shows the number of students who play basketball and baseball. A. Baseball 13 (5) 12 basketball B. Baseball 13 (6) ...
*Tuesday, March 10, 2015 at 11:25am*

**Math help please!!!**

Make a box and whisker plot of the data. 13,13,20,21,21,22,24,27. I know the median is 21. The 3Q is 23 Min is 4 and the max is 27. But I can't figure what number is the Q1 because I don't know what number comes between 13 and 20. Is it 15 or 16.5? Please help me ...
*Tuesday, March 10, 2015 at 11:11am*

**MATH**

In ΔHIJ, the measure of ∠J=90°, the measure of ∠I=64°, and HI = 5.4 feet. Find the length of JH to the nearest foot.
*Tuesday, March 10, 2015 at 11:04am*

**math**

maria throws a ball straight up with an initial velocity of 10m/s what is its velocity at the highest point?
*Tuesday, March 10, 2015 at 10:24am*

**math**

If Benjamin drove at a constant rate, how many milesper hour did he drive?
*Tuesday, March 10, 2015 at 10:18am*

**Math**

Write out the partial fraction decomposition of the following rational expression. 1.) 3x^2-7x-2/x^3-x 2.) x^3-x+3/x^2+x-2
*Tuesday, March 10, 2015 at 9:47am*

**math **

a student in Greece discovers a poetry bowl that contains 28% of its original amount of c-14
*Tuesday, March 10, 2015 at 9:37am*

**math**

Evaluate (2sinx)(3sinx) (6cosx)(cosx)
*Tuesday, March 10, 2015 at 8:29am*

**math**

A cube with length 4cm is divided into 8 identical cubes.How much greater is the combined surface area of the 8 smaller cubes than the surface area of the original cube?
*Tuesday, March 10, 2015 at 8:25am*

**math**

Hence or otherwise calculte the value of 2 to the power 2010 plus 2 to the power 2012 plus 10 divide by 2 to the power 2009 plus 1
*Tuesday, March 10, 2015 at 7:07am*

**math**

Marcus is doing a science experiment in which he measures the rate at which bacteria multiply. Every 15 seconds the bacteria double in number. If there are 10 bacteria now, how many will there be in 2 minutes?
*Tuesday, March 10, 2015 at 4:24am*

**math **

how many ways can you choose 3 flavors of yogurt out of five flavors of yogurt
*Tuesday, March 10, 2015 at 12:48am*

**Please Check My Math Answers. Thanks!**

Can someone please be kind enough to check my answers? Thanks! :) I put stars by my answers. 1. Calculate the slant height for the given cone. Round to the nearest tenth. Diameter= 8cm Height= 9cm a. 10.2 cm b. 11.4 cm c. 9.8 cm *** d. 12.0 cm 2. Calculate the slant height for...
*Tuesday, March 10, 2015 at 12:44am*

**Math**

Chris ate 1/8 of a banana cream pie with a 14 inch diameter. What is the area of the remaining portion of the pie?
*Tuesday, March 10, 2015 at 12:22am*

**math**

The numbers 7, 8, 9, and 11 are written on separate pieces of paper and put into a hat. Two pieces of paper are drawn at the same time and the product of the numbers is recorded. Find the sample space.
*Monday, March 9, 2015 at 11:34pm*

**Math**

Show three ways to make 0.60 without using pennies
*Monday, March 9, 2015 at 10:30pm*

**MATH**

HOW TO DO DECIMALS
*Monday, March 9, 2015 at 10:29pm*

**math**

In each of the following, relationships among marked angles are given below the figure. Find the measures of the marked angles. b. m(∠AOB ) is 30° less than 2m (∠BOC ) c. m(∠AOB ) – m(∠BOC ) = 50
*Monday, March 9, 2015 at 10:21pm*

** MATH!!!!! NEED HELP NOW !!!!**

John rolled a standard number cube 20 times. The cube landed on the number 3 six times. What is the experimental probability that John will roll a number 3 the next time he rolls the number cube? * 3/5 2/5 3/10 7/10 There are 12 girls and 8 boys in Mrs. Laterrade's LL. ...
*Monday, March 9, 2015 at 10:08pm*

**math**

For which pair of functions f(x) and g(x) below will the lim f(x)/g(x)equal 0 x-infinity f(x) e^x; g(x) = x^3 f(x) x^5; g(x) = e^x f(x) x^3; g(x) = ln(x) f(x) x^negative 2; g(x) = e^negative x
*Monday, March 9, 2015 at 9:40pm*

**Math**

Liang wants to form a chess club. His principal says that he can do that if Liang can find six players, including him. How would you conduct a simulated model that estimates the probability that Liang will find at least five other players to join the club if he asks eight ...
*Monday, March 9, 2015 at 9:20pm*

**math**

true or false? a fair question makes assumptions about the population??
*Monday, March 9, 2015 at 9:19pm*

**math**

There are four pieces of bubble gum left in a quarter machine. Two are red and two are yellow. Chandra puts two quarters in the machine. One piece is for her and one is for her friend, Kay. If the two pieces are the same color, she's happy because they won't have to ...
*Monday, March 9, 2015 at 9:09pm*

**Math**

Liang wants to form a chess club. His principal says that he can do that if Liang can find six players, including him. How would you conduct a simulated model that estimates the probability that Liang will find at least five other players to join the club if he asks eight ...
*Monday, March 9, 2015 at 9:08pm*

**math**

find the weight of lead pipe 3.5 m long the ext . diameter of the pipe is 2.4 cm and thickness of the pipe is 2 mm given 1 cm of lead weighs 10g
*Monday, March 9, 2015 at 9:02pm*

**math**

Chester has a ribbon that is 2 meters long. He wants to cut it into 5 equal pieces. How many centimeters long will each piece be?
*Monday, March 9, 2015 at 8:45pm*

**MATH!!! NEED HELP FAST!!!**

which of the following types of information is NOT suited for display on a double bar graph? A. populations of boys and girls at three different schools B. number of records versus compact discs sold each week during a one month period at music den C. the weekly interest rate ...
*Monday, March 9, 2015 at 8:40pm*

**math**

what is the mean absolute deviation of the data set 2,2,5 A.0 B.2/3 C.4/3 D.1/3
*Monday, March 9, 2015 at 8:35pm*

**math**

6/(v-5)(v+2) if the rational expression is defined for all real numbers
*Monday, March 9, 2015 at 8:30pm*

**Math**

7k divided by 3=21 Can you please show me the work? I know that k=9 but I don't know how to show the work.
*Monday, March 9, 2015 at 8:02pm*

**MATH**

if bar of soap is 40 mm x 25 mm x 2 mm and one cubic millimeter of gold weighs about 0.0005 ounce. Find the volume in cubic millimeters and the weight in ounces of this bar of soap
*Monday, March 9, 2015 at 7:57pm*

**Math**

Dear Ms. Sue, Thank you for helping me very much. I was a little confused on your response to your answer posted at 7:23. Would my answer be 18 instead of 12? Thank you!
*Monday, March 9, 2015 at 7:47pm*

**Math**

using a circle graph of 1/3 percussion, 2/5 brass, 4/15 woodwind and also a circle graph of 1/3 woodwind, 1/6 percussion, 1/2 brass. Both bands combine as one band. A. What fraction of the band members will play brass instruments? B. what fraction of band members will play a ...
*Monday, March 9, 2015 at 7:38pm*

**Math**

You have a rectangular yard that has perimeter of 72 meters. The current area is between 300 and 350. What are the dimensions of your current fenced in space
*Monday, March 9, 2015 at 7:37pm*

**math**

3(m-1)=m+9
*Monday, March 9, 2015 at 7:35pm*

**Math**

Write the word sentence as an equation. The product of a number m and 2 is 8 2m=8 6 less than a number t is 7 t-6=7 A number m increased by 5 is 7 ? 8 is the quotient of a number g and 3 ?
*Monday, March 9, 2015 at 7:22pm*

**Math**

using a circle graph with 1/3 percussion, 2/5 brass, 4/15 woodwind. There are 30 musicians in the band. How many of them play bass instruments? I think I have to multiply 30 times 2/5 and in simplest form my answer would be 12. Is this correct?
*Monday, March 9, 2015 at 7:19pm*

**math**

air pressure decreases during a storm. the difference between the normal air pressure n and the air pressure during the 1935 florida keys hurricane wasd greater than 121 millibars. write and solve the inequality to find the normal airpressure in the florida keys before the ...
*Monday, March 9, 2015 at 7:17pm*

**Math**

working with a circle graph divided up into 1/3 woodwind, 1/6 percussion, and 1/2 brass. The marching band has three percussion musicians. How many musicians altogether are in the band? I think I have to add all of the fractions together and my answer is in simplest form so it...
*Monday, March 9, 2015 at 7:11pm*

**Math help please**

A painter used 1 1/2 gallons of paint to paint 3/4 of a room. At this same rate, how many gallons will it take to paint the whole room?
*Monday, March 9, 2015 at 7:10pm*

**Math please help**

A recipe for 48 biscuits uses 2 2/3 cups of biscuit mix. How many biscuits are made from each cup of biscuit mix?
*Monday, March 9, 2015 at 6:51pm*

**Math**

the air pressure of hurricane katrina at landfall was greater than 17 millibars plus the air pressure p before landfall. write and solve an inequality to find the air pressure of the storm before landfall i think the answer is l>17 millibars+p
*Monday, March 9, 2015 at 6:42pm*

**Math**

air pressure decreases during a storm. the difference between the normal air pressure n and the air pressure during the 1935 florida keys hurricane wasd greater than 121 millibars. write and solve the inequality to find the normal airpressure in the florida keys before the ...
*Monday, March 9, 2015 at 6:39pm*

**Math**

write an inequality representing the depth d of the water that must be greaeter than 80degrees farenheit in order for a hurricane to form
*Monday, March 9, 2015 at 6:34pm*

**Math**

Write out the partial fraction decomposition of the following rational expression. 3x^2-7x-2/x^3-x
*Monday, March 9, 2015 at 6:28pm*

**math**

How many 1-inch cubes are needed to create a cube with a side length of 7 inches?
*Monday, March 9, 2015 at 6:27pm*

**math**

you are making a rectangular table. The area of the table should be 10 ft^2. You want the length of the table to be 1 ft shorter than twice its width. What should the dimensions of the table be? This question has to be quadratic equation! I really need to know the answer, ...
*Monday, March 9, 2015 at 6:19pm*

**Math**

the air pressure of hurricane katrina at landfall was greater than 17 millibars plus the air pressure p before landfall. write and solve an inequality to find the air pressure of the storm before landfall
*Monday, March 9, 2015 at 6:08pm*

**Math**

air pressure decreases during a storm. the difference between the normal air pressure n and the air pressure during the 1935 florida keys hurricane wasd greater than 121 millibars. write and solve the inequality to find the normal airpressure in the florida keys before the ...
*Monday, March 9, 2015 at 6:03pm*

**Math help and check**

Which kind of function best models the set of data points (–1, 22), (0, 6), (1, –10), (2, –26), and (3, –42)? linear **** quadratic exponential none of the above 2. Which kind of function best models the set of data points (–3, 18), (–2, 6), (&#...
*Monday, March 9, 2015 at 6:03pm*

**Math**

the air needs to be humid up to about 18,000 ft for a hurricane to form. write an inequality to represent this altitude a of the air above the ocean
*Monday, March 9, 2015 at 5:59pm*

**Math**

write an inequality representing the temperature t of the ocean water during the formation of the hurricane if the ocean water is above 80 degrees farenheit
*Monday, March 9, 2015 at 5:56pm*

**Math Help Please**

If a mother has three bananas, two pears, and two oranges, in how many different ways can she give the fruit to her daughter in one week, one piece of fruit per day? Be sure to say how you could use this with your students and mention any adaptations that may be necessary.
*Monday, March 9, 2015 at 5:49pm*

**Math**

7. Which of the following is a true statement? (1 point) It is possible for two rectangles to have the same area, but only if they also have the same perimeter. It is possible for two rectangles to have the same area without having the same perimeter. It is possible for two ...
*Monday, March 9, 2015 at 5:48pm*

**Math, Help **

sqrt5-sqrt3/sqrt5+sqrt3
*Monday, March 9, 2015 at 5:37pm*

**Math Please Help**

In a recent survey of middle school students about pizza toppings, it was found that 25 students like pepperoni pizza, 31 like banana peppers pizza, and 5 likes both pepperoni and banana peppers on their pizza. if 66 students were surveyed, how many students do not like banana...
*Monday, March 9, 2015 at 5:31pm*

**math**

The area A equals = πr^2 of a circular oil spill changes with the radius. At what rate does the area change with respect to the radius when r equals= 3ft? This is 9pie right? not 6pie?
*Monday, March 9, 2015 at 5:21pm*

**math Functions**

The function h(t) = 2 + 50t -1.862t^2, where h(t) is the height in metres and t is the time in seconds, models the height of a golf ball above the planet Mercury's surface during its flight. A) What is the maximum height reached by the ball (would it be 1.862) B) How long ...
*Monday, March 9, 2015 at 5:19pm*

**math**

Scientific notation is most effective when used with _____ a. very small numbers b. very large numbers c. imaginary numbers d. very large and very small numbers D or B
*Monday, March 9, 2015 at 5:14pm*

**Math**

in a recent survey of middle school students about pizza toppings, it was found that 25 students like pepperoni pizza, 31 like banana peppers pizza, and 5 likes both pepperoni and banana peppers on their pizza. if 66 students were surveyed, how many students do not like banana...
*Monday, March 9, 2015 at 5:09pm*

**MATH**

Money in a bank account that compounds interest by some percentage acts _______.? A.linearly B.exponentially C.negatively D.like a fraction Is it B?
*Monday, March 9, 2015 at 4:59pm*

**math**

Leslie needs 324 inches of fringe to put around the edge of a tablecloth. The fringe comes in lengths of 10 yards. If Leslie buys 1 package of fringe, how many feet of fringe will she have left over?
*Monday, March 9, 2015 at 4:45pm*

**MATH**

How can you calculate the square root of 1.8E-5 without a calculator
*Monday, March 9, 2015 at 4:45pm*

**math**

The height of a cylinder with a fixed radius of 10 cm is increasing at the rate of 0.5 cm/min. Find the rate of change of the volume of the cylinder (with respect to time) when the height is 30cm.
*Monday, March 9, 2015 at 3:55pm*

**Math**

josh says that 2/3 is always the same as 4/6. Meghan says that 2/3 and 4/6 are equivalent fractions, but they could be different amounts. Which student is correct? Explain. Pleaseeeeeeeeeeee help!!!!!!!!!
*Monday, March 9, 2015 at 3:55pm*

**math**

The probability that Ryan chooses Spanish is 0.86 and the probability that Riley chooses Spanish is 0.73. State the probability that: a. they both chose Spanish b neither of them choose Spanish c. only one of them chooses Spanish d. at least one of them chooses Spanish
*Monday, March 9, 2015 at 3:41pm*

**math**

A boat is travelling south at a rate of 18 km/h. A man walks across the deck from east to west at a rate of 16 km/h. Find the magnitude and direction of his velocity.
*Monday, March 9, 2015 at 3:38pm*

**math**

A rectangular box has a square base with an edge length of x cm and a height of h cm. The volume of the box is given by V = (x^2)h cm^3. Find the rate at which the volume of the box is changing when the edge length of the base is 10 cm, the edge length of the base is ...
*Monday, March 9, 2015 at 3:25pm*

**Math**

If the total cost function for producing x lamps is C(x) = 90 + 36x + 0.1x^2 dollars, producing how many units will result in a minimum average cost per unit? PLEASE EXPLAIN YOUR WORK Thank you
*Monday, March 9, 2015 at 3:15pm*

**math**

Stem/Leaf --------------- 4 /3, 5 5 /0, 5, 6 6 /2, 2, 4 7 /1, 3 8 /0, 4 Key 4/3=4.3 What was the shortest distance, in miles, that a student ran? A)4 B)4.3 C)43 D)43.5
*Monday, March 9, 2015 at 12:28pm*

**Math**

A ship leaves port and sails northwest for 2 hours, and then sails N35degreesE for three hours. If it does not change speed, what direction must the ship sail to return directly to port? How long will this return trip take?
*Monday, March 9, 2015 at 12:13pm*

**Math**

A flower planter is to be made from landscape ties that are 4 feet long, four inches high and six inches wide. Each planter is 4 ties high. Describe how to build the planters so that they are square
*Monday, March 9, 2015 at 12:10pm*

**math help needed bad**

how do I make a box and whisker plot with the numbers 13,13,20,21,21,22,24,27? I put them all in order but since there is only 8 numbers i do not know how to find the median,the lower quartile,upper quartile the lowest value and the highest value. Please dont yell at me I have...
*Monday, March 9, 2015 at 11:46am*

**Math**

f(x)=2x+10 f(3)...?
*Monday, March 9, 2015 at 11:32am*

**math**

Mary Jo Prenarie is a office manger with the gross earning of $1600 semimonthly. if her company switches pay schedules from semimonthly to biweekly earning. what is Mary Jo new gross earning
*Monday, March 9, 2015 at 11:28am*

**math**

the order of the pole of sin(z)/((z-3)^4 * (z^2 + 3)^2) at z=3.
*Monday, March 9, 2015 at 10:54am*

**math/econs**

determine the first derivative of:Y=3+10X+5X2
*Monday, March 9, 2015 at 6:20am*

**math**

find the absolute error in measuring 12.25ml of water in a container
*Monday, March 9, 2015 at 3:58am*

**math**

a group of 3 friends shared the cost of a tape recorder. if andy, barbara, and donna each paid $12, $30 and $18, respectively, then donna paid what percent of the cost of the tape recorder?
*Monday, March 9, 2015 at 12:42am*

**Math**

What factors does X3-X have for all X
*Monday, March 9, 2015 at 12:09am*

**Business Math**

Ned’s Sheds purchases building materials from Timbertown Lumber for $3700 with terms of 4/10, 2/15, n/30. The invoice is dated October 17. a) List the time periods, as well as the payment and percent discount for each period. b) On November 1, a partial payment of $2000 ...
*Sunday, March 8, 2015 at 8:54pm*

**Math **

The bottom end of a 14 foot loading ramp is 10.7 feet away from the entrance to the building. Find the angle the ramp makes with the ground.
*Sunday, March 8, 2015 at 8:49pm*

**Math**

If a ten foot tower casts a thirteen foot shadow on the ground, what is the angle of elevation of the sun?
*Sunday, March 8, 2015 at 8:47pm*

**Math**

The cost (in thousands of dollars) of the production of scooters can be representedby x^2 - 10x + 27, where x is the number of scooters produced. What is the minimum number of scooters that can be produced for $6 thousand?
*Sunday, March 8, 2015 at 8:40pm*

**math**

Sorry, another question. ** Determine whether parallelogram ABCD is a rhombus, a rectangle, or a square. List all that apply. Explain your reasoning. 1) A(12,0), B(6,-6), C(0,0), D(6,6) I know to do this. I just dont know if it's a rhombus, rectangle, or a square. For AB I...
*Sunday, March 8, 2015 at 8:24pm*

**Math**

How do you solve the following question? **QRST is a rectangle. If m<QTR = 2x to the power of 2 - 7 and m<SRT = x to the power of 2 + 18, find m<QTR.
*Sunday, March 8, 2015 at 8:19pm*

**math**

a punter kicked the football into the air with an upward velocity of 62 ft/s. Its height h in feet after t seconds is given by the function h= -16t ^2 + 62 t + 2. How long does it take for the ball to hit the ground?
*Sunday, March 8, 2015 at 8:14pm*

**math**

(ASAP!!) can somebody tell me the answers to the measurement test on Connexus academy lesson 17 unit 2 measurement test, so I get a good grade.
*Sunday, March 8, 2015 at 7:42pm*

**Math**

The surface of the ocean is 33 degrees. Every 3m you go down it gets colder. Sharks can live in temperatures between 6 and 27 degrees. What is the shallowest and deepest waters the Sharks can swim in, in meters?
*Sunday, March 8, 2015 at 7:37pm*

**Math**

Use the figure to answer the following questions. figure for questions 1–3 1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle sign1 = 37°, what ...
*Sunday, March 8, 2015 at 7:20pm*

**Math**

I have the same problem as Marita. Can someone tell us what equation to use. Horizon has a cell phone plan for $28.00 per month plus $.30 per minute with unlimited anytime network minutes and a free flip phone for new customers. How do I put this in an equation. Sprint has a ...
*Sunday, March 8, 2015 at 7:10pm*

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