Monday
April 20, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

math
of 50 students surveyed, 22 have a skateboard, and 18 have roller shoes. of those, 6 students have both. how many students have neither a skateboard nor roller shoes? i don't know how to solve this one
Tuesday, March 10, 2015 at 8:17pm

math
in 2010, 25 parents participated in the band booster organization at king middle school. participation increased to 40 parents in 2011 and 55 parents in 2012. if the trend continues, about how many parents can be expected to participate in 2013? i think it is 70 parents in 2013
Tuesday, March 10, 2015 at 8:17pm

Math
Sam needs to cut a piece of sheet metal into 8 pieces. All the cuts are made in the same direction. It takes him 5 min. to make each cut. How many cuts will Sam make?
Tuesday, March 10, 2015 at 8:08pm

math
in 2010, 25 parents participated in the band booster organization at king middle school. participation increased to 40 parents in 2011 and 55 parents in 2012. if the trend continues, about how many parents can be expected to participate in 2013? i think it is 70 parents in 2013
Tuesday, March 10, 2015 at 7:59pm

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 ...
Tuesday, March 10, 2015 at 7:55pm

Math
of 50 students surveyed, 22 have a skateboard, and 18 have roller shoes. of those, 6 students have both. how many students have neither a skateboard nor roller shoes?
Tuesday, March 10, 2015 at 7:52pm

math
A rectangular piece of carpet is place on the floor of a rectangular room leaving a margin of 1 m around it. If the room measures 8 m by 6 m find the area of the room not covered by the carpet.
Tuesday, March 10, 2015 at 7:47pm

Math
A bag of balloons contains 2 red balloons, 10 green balloons, 16 yellow balloons, and 7 orange balloons. What is the probability that a randomly selected balloon would be green or orange?
Tuesday, March 10, 2015 at 7:32pm

Math
Part C Matt deposited $311.50 into his account on Nov. 1. After he paid several bills from the account, his account balance was –$5.00. What was the total amount of the bills he paid that resulted in this balance? Explain how you got your answer.
Tuesday, March 10, 2015 at 7:28pm

math
To needs to cut strip of wrapping paper that are each 9 inches wide.If TV has 2 rolls of wrapping paper that are each 15 feet long,how many 9 inch strips can he cut?
Tuesday, March 10, 2015 at 7:25pm

Math
Q. marx's clothing store is selling a lot of items. On Monday 495 items were sold. On Tuesday 450 items were sold. On Friday 593 items were sold. Marx's misplaced the totals for Wednesday and Thursday, but the average over the five days was 494 items per day. What ...
Tuesday, March 10, 2015 at 6:59pm

Math
Why are shapes that are not closed not a real shape
Tuesday, March 10, 2015 at 6:44pm

Check Answers (Math)
Which of the following has a graph that is wider than the graph of y=3x^2+2? A) y=3x^2+3 B) y=0.5x^2+1 C) y=-4x^2-1 D) y=4x^2+1 Would the answer be B?
Tuesday, March 10, 2015 at 6:07pm

Math
for a school assignment, santiago has to give three possibilities for the dimensions of a retangle that has a perimeter of 28 ft and an area greater than 30 ft. what are two other possibilities other than 10ft of base and 4 ft for height
Tuesday, March 10, 2015 at 6:03pm

Math
Can you drop your email for my math question?Its on Google classroom and it has a picture that does not copy onto jiskha's homework help
Tuesday, March 10, 2015 at 6:02pm

Math
Which of the following has a graph that is wider than the graph of y=3x^2+2? A) y=3x^2+3 B) y=0.5x^2+1 C) y=-4x^2-1 D) y=4x^2+1 If anyone could help that would be amazing. Thank you so much!
Tuesday, March 10, 2015 at 5:50pm

math
Mark has 312 books in his bookcases. He has 11 times as many fiction books as nonfiction books. How many fiction books does Mark have. My answer is Mark have 308 fiction books and 4 nonfiction books.
Tuesday, March 10, 2015 at 5:49pm

math
Nikki's school day last 7 hours, 20 minutes. How many minutes does Nikki's school day last? Explain how you found the answer
Tuesday, March 10, 2015 at 4:59pm

finite math
Suppose that a 4-digit pin number is to be formed with the digits in {0, 1, ,2 ,3 ,4 ,5, 6, 7, 8, 9}. What is the probability that the pin number contains at least 3 odd digits
Tuesday, March 10, 2015 at 4:44pm

math
Sally and Marta had the same number of postcards. After Sally sold 18 pf her cards, Marta had 4 times as many postcards as Sally. How many postcards did each girl have to begin with?
Tuesday, March 10, 2015 at 4:36pm

math
You are paid $5.75/hr at your part-time job delivering pizzas. You usually earn $1.50/pizza as a tip. Your deductions are FICA (7.65%), federal (11.2%) and state (7.1%) If you work 10 hours and deliver 3 pizzas/hr, what is your gross pay including tips ?
Tuesday, March 10, 2015 at 4:25pm

math
Hannah and Francine have $120. Hannah and Peter have $230. Peter has 6 times as much money as francine. How much money does Hannah have?
Tuesday, March 10, 2015 at 4:17pm

Math
Is 1 1/4 + 2/8 = 1 8/32 + 8 /32 = 2 Then 4 1/2 - 2 = 2 1/2 Are these correct
Tuesday, March 10, 2015 at 4:04pm

Math
Is this correct 1/3 + 2/3 + 2/5 + 3/5 + 1/2 = Is the answer 1/3 + 2/3 = 1 2/5 + 3/5 = 1 + 1/2 = 2 1/2
Tuesday, March 10, 2015 at 3:50pm

finite math
After rolling a pair of fair, six-sided dice, what is the probability that the sum of the outcomes is at least 4 but less than 12? (Round your answer to the third decimal place)
Tuesday, March 10, 2015 at 3:45pm

Math
Is 2/3 of 12 = 8
Tuesday, March 10, 2015 at 3:30pm

Math
Is this correct 3/4 + 1/2 + 1/2= 1 3/4
Tuesday, March 10, 2015 at 3:22pm

math
A set of data is normally distributed with a mean of 455 and a standard deviation of 25. What percent of the data is in the interval 405–455?
Tuesday, March 10, 2015 at 3:17pm

math
In a geometric sequence, the sum to infinity is 1.5 and the sum of the first three terms is 14/9. Determine the sequence.
Tuesday, March 10, 2015 at 3:13pm

Math
Explain how the order of operations determines how you simplify a numeric expression. explain the rules for addition, subtraction, multiplication, division, and the use of grouping symbols.
Tuesday, March 10, 2015 at 2:52pm

Math
tom is scheduling his classes for next quarter. he wants to take three classes, and has the following options: spanish at 9, 10, or 11; music at 9 or 11; math at 10 or 12. list possible schedules he would choose
Tuesday, March 10, 2015 at 2:32pm

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

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