Sunday
April 19, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

Math
1.A restaurant surveys 60 of its customers about their new menu. 48 of the customers that take the survey prefer the new menu. A.Which value is unknown in this problem: the part, percent, or whole? B.Write and solve the proportion to find the percent of the customers that ...
Thursday, April 16, 2015 at 8:16pm

4th grade math
the area of a rectangular rug is 24 square feet. The perimeter is 28 feet. What are the dimensions of the rug?
Thursday, April 16, 2015 at 8:12pm

math
LeanNE walks at an average speed of 3 1/3 mph. How far does she walk in 2hrs 15 minutes? 10/3 × 9/4 == 90/12 would equal 7 1/2 miles
Thursday, April 16, 2015 at 8:04pm

Math
Determine whether each sequence is arithmetic of geometric. Find the next three terms. 14,19,24,29.... A. Geometric,34,39,44 B. Arithmetic,32,36,41 C. Arithmetic, 34,39,44 D. This sequence is neither arithmetic or geometric. Is the answer C? Thank you
Thursday, April 16, 2015 at 7:45pm

Math
Eddie measured his aquarium using a small fish food box. The box has a base area of 6 inches and a height of 4 inches. Eddie found that the volume of his aquarium is 3,456 cubic inches. How many boxes of fish food could fit in the aquarium?
Thursday, April 16, 2015 at 7:35pm

math
hamid has 2 qt container of grape juice tell two ways that hamid can divide the grape juice into 5 containers
Thursday, April 16, 2015 at 7:29pm

Math
The length of a blue ribbon is two-thirds the length of the red ribbon.The blue ribbon is 30 cms long.Write an equation you can use to find the length of r the red ribbon
Thursday, April 16, 2015 at 7:25pm

math word problems
Q. Marissa had a doctors appointment last Friday. the bill for her visit came to $345. Her family's health insurance will pay 80% of the bill. What is the dollar figure that Marissa's family will have to pay?? - A. Do I divide...?
Thursday, April 16, 2015 at 7:16pm

Math
Dakota says the point on the number line shown here is 4/5. His teacher says that he is reading the number line incorrectly. What is Dakota's error? What is the correct fraction?
Thursday, April 16, 2015 at 7:00pm

math
Suppose there are 2 pieces of the cake left over,but you don't know how many pieces were in the whole cake. Explain how you could find the number of pieces in the whole cake if Taylor told you 1/6 of the cake was left. You may show your work in a drawing.
Thursday, April 16, 2015 at 6:55pm

Math
Lin earns $12 an hour. She wants to buy a new MP3 player. She is considering models that cost at least $84. Writ an inequality that describes how many hours Lin needs to work to be able to buy the player. Explain the answer.
Thursday, April 16, 2015 at 6:35pm

math 8th!
point A (-2,3) lies on a line with a slope of 2. Describe how to find two points on the line on either side of A.
Thursday, April 16, 2015 at 6:28pm

Math.
Which roof is steeper: a roof with a rise of 12 and run of 7 or a roof with a rise of 8 and a run of 4?
Thursday, April 16, 2015 at 6:22pm

Math question
to prepare for a presentation Pete colored one half of a poster Rebecca colored third of the poster what fraction still needs to be colored
Thursday, April 16, 2015 at 5:49pm

Math
A construction crew wants to hoist a heavy beam so that it is standing up straight. They tie a rope to the beam, secure the base, and pull the rope through a pulley to raise one end of the beam from the ground. When the beam makes an angle of 40 degrees with the ground, the ...
Thursday, April 16, 2015 at 5:06pm

MATH
Suppose that you work at the Peacock Blue store for 40 hours over five days at a rate of $9.25/hour. You then quit your job. Deductions are FICA (7.65%), federal withholding (12%), and state withholding (8%). Your expenses are transportation at $5.25/day, lunch at $3.85/day, ...
Thursday, April 16, 2015 at 5:02pm

Math
Can you explain why the scatter plot shows a negative Z value when the Histogram starts at zero.
Thursday, April 16, 2015 at 4:38pm

math
given the equation -3x +2y =4, Write another equation that will form a linear system with: one solution, no solution and infinite solution. infinite solution: (-3x +2y =) * 3 -> -9x +6y =12 y=3/2x+4 -9x +6y =12 I think we have to multiple the first equation by non-zero ...
Thursday, April 16, 2015 at 2:27pm

Math
How to sketch ven diagram with 3 events
Thursday, April 16, 2015 at 1:51pm

math
I need the answers really quick before my time is out HELP PLZZ 3. determine which ordered pair is a solution of y = 2x – 3? A.(-2,7) B.(0,3) c.(-4,-11) d.(5,-7) 4.on which of the following lines does (7,1) lie? A. y-5x=4 b. y=x-10 c. y=-4x+3 D. y=-x=8 6.find the slope of...
Thursday, April 16, 2015 at 12:53pm

Math
if m<1= 43°, what is m<4? (<= angle sign) can i please get an explanation? im lost
Thursday, April 16, 2015 at 12:38pm

MATH
Suppose that you work at the Peacock Blue store for 40 hours over five days at a rate of $9.25/hour. You then quit your job. Deductions are FICA (7.65%), federal withholding (12%), and state withholding (8%). Your expenses are transportation at $5.25/day, lunch at $3.85/day, ...
Thursday, April 16, 2015 at 12:15pm

math
Determine which ordered pair is not a solution of y=-5x-4. (10,-52) (7,-39) (-7,31) (8,-44) I think it is (7,-39)
Thursday, April 16, 2015 at 12:01pm

math
show that : cos(360*+x)-tan(180*-x)sin(360*-2x)cos(-​x) divided by sin(90*+x)=cos2x
Thursday, April 16, 2015 at 11:42am

math
Evaluate: cos390*-tan150*sin300*cos(-30)/sin120*
Thursday, April 16, 2015 at 11:31am

math
show that : cos(360*+x)-tan(150*-x)sin(360*-2x)cos(-​x)/ sin(90*+x)=cos2x
Thursday, April 16, 2015 at 11:24am

MATH HELP
What number comes next in the Fibonacci sequence: 0, 1, 1, 2, 3, 5 A)5 B)7 C)8 D)13 IS it b or c
Thursday, April 16, 2015 at 10:55am

math
The amount of Jen’s monthly phone bill is normally distributed with a mean of $50 and a standard deviation of $10. Find the 25th percentile. A. About $46.30 B. About $43.30 C. About $43.40 D. about $43.20 I came up with $43.26 which its not a choice. Please help!!
Thursday, April 16, 2015 at 7:31am

math plz help Irving
How many ways can 4 students be chosen from a class of 12 to represent their class at a banquet? A.495 B.990 C.5,940 D.11,880 Is the answer C?
Thursday, April 16, 2015 at 1:01am

math plz help
The contents of a jar holds 4 red marbles, 7 blue marbles, and 5 green marbles from which you select marbles at random. What is the probability of selecting a red marble, replacing it, and then selecting a blue marble? Show your your work. Is it 4/16 for picking red then 7/16 ...
Thursday, April 16, 2015 at 12:14am

Math
What do you learn from these stage directions? [The faintest trace of a smile on her lips] A. Julia is suddenly very happy. B. Julia knows something mistress don't know. C. Julia has made an important decision. D. Julia is thinking about someone she loves. Could the answer...
Thursday, April 16, 2015 at 12:08am

math
Imagine a flat-bottomed cylinderal container with a circular cross section of radius 4 in. a marble with radius 0<r<4 inches is placed in the bottom of the can. what is the radius of the bottom that requires the most water to cover it.
Thursday, April 16, 2015 at 12:01am

math plz help
A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probability. Write the probability as a fraction in simplest form. A. Find the theoretical probability of selecting a pink rubber band. Would it be 95/185=...
Wednesday, April 15, 2015 at 11:56pm

math -check
given the equation -3x +2y =4, Write another equation that will form a linear system with: one solution, no solution and infinite solution. Graph the linear using graphing calculator and write your window setting in the format x: Xmin, xmax, Xscl. Y: Ymin, Ymax, Yscl Please ...
Wednesday, April 15, 2015 at 11:24pm

Math
If you have a spinner with six spaces each with a letter P,U,I,O,E,N and you spin the spinner twice what is the P(vowel, then P)? A.1/3 B.1/9 C.5/6 D.5/12 Is the answer D?
Wednesday, April 15, 2015 at 10:43pm

6th grade math
2 line segments intersect to form an angle that has a measure of 50.7 degrees. What is the measure in degrees of an angle that is supplementary to this angle?
Wednesday, April 15, 2015 at 10:41pm

Math (ASAP)
Write out the first 4 terms of the following sequence that is define recursively. a1=32 ak+1=1/2ak
Wednesday, April 15, 2015 at 10:10pm

math
the distribution having p.d.f. f(x)=exp(a-x) x>0 Let x1=min{x1,x2,...,xn}and zn=n(x1-a), find the limiting distribution of zn
Wednesday, April 15, 2015 at 9:52pm

math
The diameters of pencils produced by a certain machine are normally distributed with a mean of 0.30 inches and a standard deviation of 0.01 inches. In a random sample of 460 pencils, approximately how many would you expect to have a diameter less than 0.293 inches? A. 123 B. ...
Wednesday, April 15, 2015 at 9:46pm

Math
Take a four digit number (abcd) and repeat it to make an eight digit number (abcdabcd). This eight-digit number always has at least three different prime factors, unless you start with a certain four-digit number. Which number is it?
Wednesday, April 15, 2015 at 9:44pm

Math
Prove that 140 * 141 * 142 * ... * 159 * 160 is divisible by 4321.
Wednesday, April 15, 2015 at 9:43pm

Math
The time it takes to complete a given trip varies inversely as the speed traveled. If it takes Tim 10 hours tro travel from Cleveland to Albany at 42 mi/h, how long will it take him to make the trip at 60 mi/h?
Wednesday, April 15, 2015 at 9:39pm

Math
how to multiply1111X101 in base 2 binary
Wednesday, April 15, 2015 at 9:36pm

math
Imagine a flat-bottomed cylinderal container with a circular cross section of radius 4 in. a marble with radius 0<r<4 inches is placed in the bottom of the can. what is the radius of the bottom that requires the most water to cover it. (include first or second derivative...
Wednesday, April 15, 2015 at 9:33pm

math
The amount of Jen’s monthly phone bill is normally distributed with a mean of $50 and a standard deviation of $10. Find the 25th percentile. A. About $46.30 B. About $43.30 C. About $43.40 D. about $43.20 I came up with $43.26 which its not a choice. Please help!!
Wednesday, April 15, 2015 at 9:31pm

Math
I am a closed shape made of 6 line segments. I have2 angles less than a right angle and no right angles. What shape am I draw an example
Wednesday, April 15, 2015 at 9:24pm

math
the distribution having p.d.f. f(x)=(exp(x)*a^x)/x! x=0,1,2,... a>=0 find the maximum liklihood estimator of a
Wednesday, April 15, 2015 at 9:18pm

Math
Time varies inversely as the rate of travel. If Jennifer drove 13 hours at an average rate of 54 miles per hour, how long would thr trip take at a rate of 65 miles per hour
Wednesday, April 15, 2015 at 9:16pm

Math
Mass, m, is varies inversely as acceleration, a. The constant of variation is force,f. Write an equation to express this relationship.
Wednesday, April 15, 2015 at 9:11pm

math
4.In Amy’s English class, 30% of the students play an instrument. She does not know how many in the whole school play an instrument, but there are 500 students in the school. A.Solve the proportion 30/100=n/500 to estimate the total number of students in the school who ...
Wednesday, April 15, 2015 at 9:08pm

math
write an addition equation the equation must have a 1 a 2 a 3 digit added and use all of these digits 662-228-8000
Wednesday, April 15, 2015 at 9:07pm

Math
A truck carries cartons packed with boxes. The boxes were 22 inches long on each edge. If 4 boxes completely fill the carton, what is the volume of carton in cubic feet?
Wednesday, April 15, 2015 at 9:02pm

Math
3.Max says there were 6 students wearing shorts in his math class. He is not sure how many people were in the class, total, but he thinks about one third of them were wearing shorts. A. What percent is closest to 1/3 ? Explain. B.Write and solve a proportion below, to estimate...
Wednesday, April 15, 2015 at 8:44pm

math
The batting averages of the first three batters in the Eureka College women’s softball team lineup are .310, .301, and .277. If the first three batters are considered as the “lead-off group”, what is the batting average of the group? A. .301 B. .296 C. There is ...
Wednesday, April 15, 2015 at 8:41pm

Math
What is 21.21% rounded to two decimal places?
Wednesday, April 15, 2015 at 8:33pm

Math
Take a four digit number (abcd) and repeat it to make an eight digit number (abcdabcd). This eight-digit number always has at least three different prime factors, unless you start with a certain four-digit number. Which number is it?
Wednesday, April 15, 2015 at 8:23pm

Math (ASAP)
Write out the first 4 terms of the following sequence that is define recursively. a1=32 ak+1=1/2ak
Wednesday, April 15, 2015 at 8:22pm

Math
Prove that 140 * 141 * 142 * ... * 159 * 160 is divisible by 4321.
Wednesday, April 15, 2015 at 8:21pm

math word problems
Q. Mark's doctor appointment was 35 minutes after Tyson 's appointment, Tyson appointment was 20 minutes after Timothy's appointment. Timothy arrived 8 minutes before his appointment but 17 minutes after Raul's appointment which started at 9:30 am. At what time...
Wednesday, April 15, 2015 at 7:44pm

Math
1.Jake has 10 t-shirts and 5 collared shirts. What is his ratio of t-shirts to collared shirts? this answer is 5/ 10 what i can't figure out is the second part of this 2. If Jake buys 3 new shirts, how many of them would you expect to be to be t-shirts, and how many would ...
Wednesday, April 15, 2015 at 7:37pm

math
Kenji, a pet store employee, wants to fit two fish tanks on one table. One fish tank is 4 feet wide and the other fish tank is 2/5 of a foot wide. When placed next to each other, what is the total width of the two fish tanks? Simplify your answer and write it as a proper ...
Wednesday, April 15, 2015 at 7:29pm

math
Mark's doctors appointment was 35 minutes after Tyson 's appointment. Tysons appointment was 20 minutes after Timothy's appointment. Timothy arrived 8 minutes before his appointment. But 17 minutes after Raul's appointment. Which started at 9:30 am. At what ...
Wednesday, April 15, 2015 at 7:28pm

Math
Kenji, a pet store employee, wants to fit two fish tanks on one table. One fish tank is 4 feet wide and the other fish tank is 2/5 of a foot wide. When placed next to each other, what is the total width of the two fish tanks? Simplify your answer and write it as a proper ...
Wednesday, April 15, 2015 at 7:28pm

math plz help
A bag contains 5 green marbles,8 red marbles,11 orange marbles, 7 brown marbles, and 12 blue marbles. You choose a marble, replace it, and choose again. What is P(red, then blue)? A.20/43 B.40/43 C.20/1849 D.96/1849 Is the answer A?? Thank you in advance
Wednesday, April 15, 2015 at 7:26pm

math
A large game die is a cube measuring 1.2” in length. The die is a solid made from liquid plastic. If a game comes with 6 such dice, how many cubic inches of liquid plastic were needed to make the 6 dice?
Wednesday, April 15, 2015 at 7:06pm

math
Larry and Willa are each reading the same book.Larry has read 2/3 of the book.Willa read 4/6 of the book,so she read more.Is Willa correct?Explain
Wednesday, April 15, 2015 at 6:31pm

math
area 432 square ft. width is 3/4 of length, what is length
Wednesday, April 15, 2015 at 6:24pm

Math
Ellen, Fern, and Kyle are all drinking milk from the same size cartons in the cafeteria. Ellen's carton is 3/7 full. Ferns carton is 3/10 full. Kevin's carton is 3/4 full. Who has the least milk left in their carton? Explain how you know?
Wednesday, April 15, 2015 at 6:09pm

Math
The variable y varies inversely as x : y is 1 2/3 when x is -3/5. Find y when x is 3/7
Wednesday, April 15, 2015 at 5:58pm

Math
The time it takes to clean the house varies inversely with the number of people cleaning. If it takes 1 person 4 hours to clean the house, how long will it take 3 people? 12 hours
Wednesday, April 15, 2015 at 5:54pm

Math
The volume of a gas varies inversely as applied pressure if the pressure acting on a 45m^3 of gas is lowered from 3 atmospheres to 2 atmospheres what new volume does the gas occupy
Wednesday, April 15, 2015 at 5:52pm

Math
A suitcase has a mass of 12,000 grams. What is the mass in kilograms? I say 12
Wednesday, April 15, 2015 at 3:58pm

math
How many grams equal 7 kg?
Wednesday, April 15, 2015 at 3:42pm

math
The life span of a DVD player produced by one major company is known to be normally distributed with a mean of 6.2 years. If 4.01% of these DVD players have a life span of more than 8 years, what is the standard deviation of the DVD player’s life span?  
Wednesday, April 15, 2015 at 2:54pm

math
Test scores on a university admissions test are normally distributed, with a mean of 500 and a standard deviation of 100. a. What is the probability that a randomly selected applicant scores between 425 and 575? b. What is the probability that a randomly selected applicant ...
Wednesday, April 15, 2015 at 2:53pm

math
What is the probability that a randomly selected applicant scores between 425 and 575? a. What is the probability that a randomly selected applicant scores between 425 and 575? b. What is the probability that a randomly selected applicant scores 625 or more?  
Wednesday, April 15, 2015 at 2:50pm

even moar math
You own 5 pairs of jeans and want to take 2 of them with you on vacation. In how many ways can you choose 2 pairs of jeans? - 10 ways - 15 ways - 4 ways - 20 ways **
Wednesday, April 15, 2015 at 2:50pm

More math
Simplify 9C4. - 126 *** - 15,120 - 5 - 3,024
Wednesday, April 15, 2015 at 2:17pm

Math
Simplify 6P2. - 30 - 15 *** - 12 - 720
Wednesday, April 15, 2015 at 2:16pm

Simple math.
Simplify 5! -5 -15 * -120 -125
Wednesday, April 15, 2015 at 2:15pm

Math
If a man runs for an hour and a half at 8 miles an hour due south; and then he continues south on a bus traveling at 55 miles an hour, for 24 minutes. How far did he travel?
Wednesday, April 15, 2015 at 12:39pm

Math
which of the following best describes the solution to the equation below 7x+4=7x+4
Wednesday, April 15, 2015 at 11:33am

Math
Without graphing, tell whether the line containing (6.-3) and (0,-8) is horizontal, vertical or neither. I believe it horizontal
Wednesday, April 15, 2015 at 11:24am

math
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 is the measure of angle sign4? (1 point) 53° 43° 37° .. 27° 3...
Wednesday, April 15, 2015 at 11:17am

Math
can positive and negative X axis or positive and negative y axis have different scales? I mean that is it possible for positive and negative sides of a particular axis(X or Y) to have different scales if numbers to be plotted on one side large and small on the opposite side?...
Wednesday, April 15, 2015 at 11:15am

math
The value of the independent variable in a function is always __?__ the value of the independent variable A greater than B dependent on C equal to D less than
Wednesday, April 15, 2015 at 10:52am

math
Renee is a sales associate at a store. She earns $80 a week plus a 15% commission on her sales. Last week, she sold $200 worth of items. What is the total amount Renee earned for the week? How much did she earn from commission?
Wednesday, April 15, 2015 at 10:51am

math
Task is to construct two brick columns of the dimensions shown on which an iron gate will eventually be hung. Because the bricks measure 8" long by 3 1/2" wide by 2 1/2" high, you decide to build each column by laying the bottom row of bricks as shown.
Wednesday, April 15, 2015 at 10:45am

6th Grade Math
Hi, can someone please give me a few examples of how people use functions in the real world and explain them too? Thank You :)
Wednesday, April 15, 2015 at 10:11am

math
bruno is measuring water for an experiment. he fills a 2 litre container and a half liter container. how much water does bruno use altogether? give your answer in millilitres.
Wednesday, April 15, 2015 at 10:09am

Math
Determine which ordered pair is a solution of y=x2 -2. (-2,6) (5,21) (-1,-1) (-5,24)
Wednesday, April 15, 2015 at 8:40am

math
find the length of an arc of a circle of radius 5.6 cm which subtends an angle of 60 degrees at the centre of the circle.(take pie as 22 divided by 7.)
Wednesday, April 15, 2015 at 7:56am

math
suppose a hat containing 100 balls consists of 20blue ball,30yellow balls,30red balls and 20green balls.a sample of 5 balls is drawn from the hat one by one without replacement.what is the probability that there will be 2blue balls in the sample
Wednesday, April 15, 2015 at 7:06am

math
Given the equation - 3x +2y =4. Write another linear equation that will form a linear system with exactly one solution? I usually try to answer b4 i ask question But this time i'm really stuck. plz help ?
Wednesday, April 15, 2015 at 1:56am

math
Assume the brakes of an automobile produce a constant deceleration of k ft/sec^2. Determine what k must be to bring an automobile traveling 60 mph to a rest in a distance of 100 ft from the point where breaks are applied? With the same k, how far would a car traveling 30mph ...
Wednesday, April 15, 2015 at 1:34am

Math
Each day Julia's math Teacher gives class a warm up qs. It's true/false 20% of the times and multiple choice 80% . Julia gets 70% on true false correct and 90% on multiple choice correct. Julia answered today's question correctly. What's the probability that it...
Wednesday, April 15, 2015 at 12:55am

math
Elin estimates her probability of passing French 0.6, passing chemistry is 0.8, (a)determine the probability that elin will pass French but fail chemistry (b) pass chemistry but fail French (c) pass both classes (d)fail both classes
Wednesday, April 15, 2015 at 12:23am

algebra
I need some help with this math problem: Let n be the number of oil refineries at t years since 2005. A reasonable model of oil refineries is n= -2.23t + 210.53. What is the slope of this model? What does it mean in this situation?
Wednesday, April 15, 2015 at 12:19am

math
A rectangular pool measures 20ft by 30ft. It is bordered by a tiled walkway that is 7 ft wide. What is the area of the walkway?
Tuesday, April 14, 2015 at 11:47pm

math
Jeff is replacing the tile on his floor. he pans to use square tiles that are 11 inches on a side. the floor is 8 feet long and 6 feet wide. cabinet in the middle of the floor that will not need tile. this space is 2 feet wide and 3 feet long. estimate how many title will be used
Tuesday, April 14, 2015 at 11:45pm

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