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October 26, 2014

Homework Help: Math

Branches of Math

Recent Math Questions

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C programming
I am suppose to create a code that uses the pow function in math.h to calculate the hyperbolic cosine when the user inputs an angle x. the equation I have to use is cosh x= e^x + e^-x /2 can someone check my code. I am not sure what i am doing wrong. do I have to declare the ...
Sunday, September 7, 2014 at 3:54pm

math 12
Here is question on an math assignment I was given, I have no clue what it is even asking. It's a Challenge Yourself question, I've typed it exactly how it is on my paper: A student is having difficult figuring out what is wrong with his proof: Let C=D C^2=CD C^2 - D^2...
Sunday, September 7, 2014 at 3:24pm

math
Given that: 4(2g + 104) - 96 = 504 + 6(g - 14), solve for g. i'm confused on how to set this problem up - if anyone could help that would be great. thank you.
Sunday, September 7, 2014 at 2:56pm

math
A rectangular box is to have a square base and a volume of 30 ft3. The material for the base costs 33¢/ft2, the material for the sides costs 10¢/ft2, and the material for the top costs 24¢/ft2. Letting x denote the length of one side of the base, find a function...
Sunday, September 7, 2014 at 2:46pm

math
If 1mechanic can do 4 machines in 6 hours how many machines can 48 mechanics do in 160 hours?
Sunday, September 7, 2014 at 2:03pm

Math
When graphing,do I always have to number the scale with a1first?
Sunday, September 7, 2014 at 1:56pm

Math
Mary has nickels, dimes and quarters worth $12:85. If the number of dimes and the number of quarters is more than twice the number of dimes, how many more dimes are there.
Sunday, September 7, 2014 at 1:38pm

Math
Does randomization relate to real world data?
Sunday, September 7, 2014 at 1:37pm

Math
Sadiq dropped his watch into a lake. The depth of the lake is 5 meters. Sadiq can dive down towards the bottom of the lake at a speed of 2 meters per second, but can swim upwards at a rate of 1 meter per second. How long will it take Sadiq to get his watch and return to the ...
Sunday, September 7, 2014 at 12:48pm

Math
What would be the new ordered pairs of reflecting the figure formed by (-1, 5), (-2, 2), (3, 2), and (2, 5)?
Sunday, September 7, 2014 at 12:44pm

Math - Urgent
The air temperature is -10 degree Celsius. With the wind blowing at a speed of 15 km/h, this temperate feels like -17 degrees Celsius. How many degrees does the temperature change because pf the wind chill?
Sunday, September 7, 2014 at 11:13am

math
Find the area of a segment AYB if radius of a circle is 21cm angle AOB is equal to 120degree.
Sunday, September 7, 2014 at 10:27am

math
The dimension of a closed cuboid box are in the ratio 5:4:3 if the total surface area is 0.94m^2,find the dimension of the box.
Sunday, September 7, 2014 at 10:24am

Math
Andy plans to build a rectangular dog pen in his backyard. A portion of the back wall of his house will serve as one side of the dog pen. If the perimeter of the dog pen must be 40 feet, which of the following widths will result in the maximum area? A. 6 ft B. 8 ft C. 10 ft D...
Sunday, September 7, 2014 at 9:51am

math
what is a five digit number less than 25,000 if each digits' value is one less than the digit to its right and is divisible by two and four
Sunday, September 7, 2014 at 9:39am

math
the average attendance of a class from monday to wednesday was 39 and that from wednesday to saturday was 39.5. What was the attendance on wednesday, if the average attendance from monday to saturday was 40 I did this:- m+t+w/3=39 w+Th+F+S/4=39.5 m+t+w+Th+F+S/6=40...
Sunday, September 7, 2014 at 7:25am

Math
john and bryan share rs 1500. if john gets twice as much as bryan. how much money does bryan have ?
Sunday, September 7, 2014 at 7:16am

math
show that csc2 theta - tan2 (90 deg - theta) = sin2 theta + sin2 (90 deg - theta)
Sunday, September 7, 2014 at 4:47am

Math
Find the exact value of sin(A+B) when angle A is arcsin(8/17) and angle B is arcsin(5/13)
Sunday, September 7, 2014 at 2:32am

Math
Market research tells you that if you set the price of an item @ 1.50, you will be able to sell 5000 items; and for every 10 cents you lower the price below 1.50 you will be able to sell another 1000 items. Let x be the # of items you can sell, and P = the price of an item. A...
Sunday, September 7, 2014 at 2:00am

math
Find the area of a segment AYB if the radius of a circle is 21cm and angle AOB is equal to 180degree.
Sunday, September 7, 2014 at 1:15am

Math
a photocopy store advertises the following prices: 5 cents per copy for the first 20 copies, 4 cents per copy for the 21st through 100th copy, and 3 cents per copy after the 100th copy. Let x be the # of copies, and let y = the total cost of the photocopying. find the equation...
Sunday, September 7, 2014 at 12:00am

MATH HEL PLZ!!!!
what is the reciprocal of 8??? i dont get how to do it.... can someone explain it???
Saturday, September 6, 2014 at 10:11pm

Math
Write the opposite of 0 Celsius and 32f temperature as integer. Plz help
Saturday, September 6, 2014 at 9:50pm

math
A Norman window has the shape of a rectangle surmounted by a semicircle. If the perimeter of the window is 16.200 ft. give the area A of the window in square feet when the width is 3.000 ft.
Saturday, September 6, 2014 at 9:46pm

Math
The air temperature is -10 degree Celsius. With the wind blowing at a speed of 15 km/h, this temperate feels like -17 degrees Celsius. How many degrees does the temperature change because pf the wind chill?
Saturday, September 6, 2014 at 9:38pm

math
what is the reciprocal of 8??? i dont get how to do it.... can someone explain it???
Saturday, September 6, 2014 at 9:17pm

Math
A tank is filling with water from a natural spring. Two days ago the water was 10 feet deep, and yesterday the water was 12 feet deep. Assume that the water depth continues to rise at this same rate after today
Saturday, September 6, 2014 at 8:57pm

math
Write an equation which models how old in years each of you will be when you are three times as old as the younger person use age 10 and 48?
Saturday, September 6, 2014 at 7:48pm

Physics for Technology
I have been out of school 27 years; no Algebra or Trigonometry training: only remedial math. This class is part of a Diploma program, no placement test required - I am out of my depth. I had a tutor for an hour last Tues., with another appt. this Tues. Yet, like I told my ...
Saturday, September 6, 2014 at 7:36pm

math
A triangle having three equal sides is necessary and sufficient for a triangle having three equal angles
Saturday, September 6, 2014 at 7:10pm

Math
A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 10 degrees to the right of her original course, and flies 2 h in the new direction. If she maintains a constant speed of 655 mi/h, how far is she from her starting position?
Saturday, September 6, 2014 at 6:06pm

Math
What would be the new ordered pairs of reflecting the points (-1, 5), (-2, 2), (3, 2), and (2, 5)?
Saturday, September 6, 2014 at 6:06pm

Math
When you calculate a mean, the sign of the quotient always depend on the sign of the dividend. Why?
Saturday, September 6, 2014 at 4:48pm

Math
Use <,>,or = |-8| _ -9 |-7| _ -8
Saturday, September 6, 2014 at 3:26pm

Math
Lindsey buy s a bag of each size of bouncy ball. She wants to put the same number of each size of bouncy ball into 5 party-favor bags. How many of each size of bouncy ball which she put in a bag?
Saturday, September 6, 2014 at 1:18pm

Teaching 4Grade Math
You play your Xbox 360 every day for a month. Each week you realize that every time you play, your battery lift goes down by 5% each week. Say you don’t play for two weeks, how much %___ are you saving a week by not playing.
Saturday, September 6, 2014 at 8:48am

Math
An all girl college began enrolling boys in 2005. By 2012 the ratio of boys to girls was 3 to 7. If there are 200 more girls than boys how many boys are there?
Saturday, September 6, 2014 at 8:08am

math 1 question
Suppose you are building a brick border for a garden by stacking rows of bricks on top of each other. If the height of each brick is 2.5 inches and r represents the number of rows, which algebraic expression would represent the height of the brick wall? 2.5 + r*** 2.5r + r 2.5...
Saturday, September 6, 2014 at 8:07am

Math
In above triangular prism,ab=3cm,ac=4cm,bc=5cm and cd12 cm,show that triangle ABC is a right-angled triangle
Saturday, September 6, 2014 at 12:34am

math
Starbucks sells a slice of Iced Lemon pound Cake for $2.45 and a bottle of Apple Juice for $1.75. If they run a food cost of 18% and a beverage cost of 8%, what is the gross profit on an order of 10 slices of pound cake and 6 bottles of Apple juice. Please show your work.
Friday, September 5, 2014 at 11:40pm

math
You have a box which contains only red marbles and blue marbles. The mass of one red marble is 16 grams, while the mass of one blue marble is 20 grams. If the box contains 21 red marbles and 18 blue marbles, what is the total mass of the marbles in the box?
Friday, September 5, 2014 at 10:35pm

math
If the average chicken lays 6 eggs in 7 days, how many chickens on average are needed to obtain 163 eggs per day?
Friday, September 5, 2014 at 10:34pm

math
Given that a - c = P, solve for P if a + b = 49 and b + c = 13
Friday, September 5, 2014 at 10:33pm

6th grade math
Integers from greatest to least... ( 6,17,-20,15,-19,26) can some help me ??
Friday, September 5, 2014 at 10:20pm

Business Math
Treadmill, cost is x, amount of markup $880.00, selling price of $2,335.00, what is percent markup based on cost?
Friday, September 5, 2014 at 9:26pm

Business Math
The Flower Power Bakery makes 200 cherry cheesecakes at a cost of $2.45 each. If a spoilage rate of 5% is anticipated, at what price should the cakes be sold to achieve a 40% markup based on cost?
Friday, September 5, 2014 at 9:19pm

Business Math
Carousel Toys has Romper Buckaroos, wooden rocking horses for toddlers, on a 30% markdown sale for $72.09. What was the original price before they were marked down?
Friday, September 5, 2014 at 9:14pm

Business Math
The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells dinners at an 80% markup based on cost. They decided to offer a $1.00 off ...
Friday, September 5, 2014 at 9:08pm

Business Math
Dylan's Bicycle Shop offers a new bicycle on sale for $259.92 after a 10% markdown. What was the cost of the bicycle to Dylan if the markup was 30% based on the cost? Round
Friday, September 5, 2014 at 8:59pm

math
write the simplest ratio for each: 18:21, 14:35, 10:12, 24:32, 21:24
Friday, September 5, 2014 at 8:56pm

Business Math
In October, a hardware store purchased snow shovels for $8 each. The original markup was 50% based on the selling price. In December the store had a sale and marked down the shovels by 20%. By January 1, the sale was over and the shovels were marked up to 15%. In March, the ...
Friday, September 5, 2014 at 8:50pm

Business Math
The Sweet Candy Shop buys 600 pounds of chocolate covered strawberries at $5.59 per pound. If a 10% spoilage rate is anticipated, at what price per pound should the strawberries be sold in order to achieve a 60% markup based on cost?
Friday, September 5, 2014 at 8:38pm

Business Math
Beacon electronics advertised a portable TV set on sale for $272.49 after a 35% markdown from the original price. What was the original price of the TV set? Round to nearest cent
Friday, September 5, 2014 at 8:22pm

Math
The Soft Step Floor Company purchases carpeting for $5.12 per sq. yard and marks it up 55% based on the selling price. What is the selling price per sq. yard? Round to nearest cent
Friday, September 5, 2014 at 8:05pm

Math
The quick plumbing supply sells a set of faucets for $79.95. if a 45% markup based on cost was used, what was the cost of the faucets to quick plumbing?
Friday, September 5, 2014 at 7:40pm

Math
A whole seller buys plastic lamps for $18 each and sells them for $30.60 What is the percent markup based on cost?
Friday, September 5, 2014 at 6:26pm

math
what is the tenth term
Friday, September 5, 2014 at 4:19pm

math
At a construction site, 20,000 pounds of gravel are needed to create a driveway with an area of 400 ft2. What area of driveway can be added with another 125 pounds of gravel? 25.5 ft2 312 ft2 160 ft2 2.5 ft2 5 ft2
Friday, September 5, 2014 at 2:40pm

math
6.4 x 10^11 + 2.85 x 10^11 ( finding the sum written in scientific notation?) - 9.25 x 10^11 (my answer) - 9.25 x 10^22 - 92.5 x 10^-10 - 92.5 x 10^12 3 x 10^20/ 4 x 10^5 (write in scientific notation) - 7.5 x 10^3 - 0.75 x 10^4 (my answer) - 7.5 x 10^14 - 7.5 x 10^15 (6.2 x ...
Friday, September 5, 2014 at 1:20pm

Math
If the chance for each of the next two days that it will snow is 2/5. What is the chance that it will not snow on any of these days?
Friday, September 5, 2014 at 12:44pm

math
how do you convert a rate to a unit rate
Friday, September 5, 2014 at 12:26pm

Math
We have a picture frame with width being 3 1/4 inches and length unknown. We need to fit picture with width of 4 cm and length 4.6 cm into frame. What is the scale factor for enlargement? What is length of unknown side of frame? I was given the answer as the scale factor being...
Friday, September 5, 2014 at 12:23pm

Math
What will be the total deduction for social SECURITY and MEDICARE taxes on Amishi's next weekly paycheck of $700 if she has already earned $22,400 this year? Social security tax is 6.2% of wages up to $106,800. MEDICARE tax is 1.45% of all wages.
Friday, September 5, 2014 at 10:13am

math
Area of 7 yd in circle With solution
Friday, September 5, 2014 at 10:07am

Math
I take out a loan for $10,000.00 and the interest rate is 6.3% APR. If I pay this loan back at $300.00 per month, how much interest will I be charged on top of this per month for the first 3 months? Please show the equation used.
Friday, September 5, 2014 at 9:56am

pharmacy math
15 grams of potassium chloride is diluted in 2 liters of sterile water for injection what is the final percentage strength
Friday, September 5, 2014 at 8:32am

Math
I have no Idea how to set this up to work. Please help! Nutrition one serving of campbell's soup companies campbell's pork and bean contains 5 grams of proton and 21 grams of carbohydrates. a typical slice of lite rye bread contains 4 grams of proton and 12 grams of ...
Friday, September 5, 2014 at 7:11am

math 101
find the distance across the corners of square nut is 7.9mm on a side
Friday, September 5, 2014 at 2:26am

math
Zoe had a board 5 1/4 feet long. She cut off a piece. Now the board is 3 5/6 feet long. How long was the piece she cut off?
Friday, September 5, 2014 at 12:30am

Math PLease help
how do you know if they are eaither parallel or perpendicular 6x+3y=12 2x+2y=4
Friday, September 5, 2014 at 12:26am

Math PLease help
solve for variable x 2(3x-7)=6(5x=9)+28 after you multipy what do you do
Friday, September 5, 2014 at 12:23am

Math
can you explain the reason major league baseball chooses to round to the nearst thousandth rather than nearst hundredth or tenth ? which gives the most accurate results? why?
Thursday, September 4, 2014 at 11:40pm

Math PLease help
If katie paid tasha $0.01 on the first day of a 31 day month and doubled the amount everyday throught the month, how much money would Tashe recieve from kate on the last dayb of the month Use formula 2N-1 (0.01)(whhere n equals number of days)
Thursday, September 4, 2014 at 11:36pm

math
a square photo display is made up of 60 rows of 60 photos each. the area of each square photo is 4 square inches. how long is each side of the display board?
Thursday, September 4, 2014 at 11:20pm

Math-please help!!
Half the students in Max's class volunteer at the local community center. 15 students do not volunteer.if there are 12 boys in Max's class , how many girls are in Max's class? I am having a brain freeze!
Thursday, September 4, 2014 at 11:17pm

Math 3
Tia is buying paper cups and plates. Cups come in packages of 12, and plates come in packages of 10. She wants to buy the same number of cups and plates, but plans to buy the least number of packages possible. How much should Tia expect to pay if each package of cups is $3 and...
Thursday, September 4, 2014 at 10:58pm

Math 2
What types of problems can be solved using the greatest common factor? Also, what types of problems can be solved using the least common multiple? Please help answer both questions
Thursday, September 4, 2014 at 10:54pm

Math 2
Juanita runs every 3rd day and swims every 5th day. If Juanita runs and swims today, in how many days will she run and swim again on the same day?
Thursday, September 4, 2014 at 10:52pm

math
Joe starts a gym.In the first year,300 people join.If the membership grows at a annual rate of 4% how many members wil there be after 5 years
Thursday, September 4, 2014 at 10:32pm

Math
Here is the instruction: Use the data from the table to calculate the number of hours of daylight for one day per week throughout the year (52 data points). Be sure to use the same day of the week so that your data points are evenly spaced 7 days apart. Does this mean... Jan. ...
Thursday, September 4, 2014 at 10:25pm

Math
Please show me how to solve for: -x+2y=6
Thursday, September 4, 2014 at 10:05pm

math word problem
Joe starts a gym.In the first year,300 people join.If the membership grows at a annual rate of 4% how many members wil there be after 5 years
Thursday, September 4, 2014 at 9:59pm

math help!!
factor: a^2/36 - b^2/49 show all your steps please!!
Thursday, September 4, 2014 at 9:47pm

math
Sammy got an average of 85% in four tests threethree of the scores were 79 97 85 find the fourth mark if he wrote a fifth test his average increase by 3 what is his fifth mark
Thursday, September 4, 2014 at 9:37pm

math
Naomi has 50 red beads and white beads. The number of red beads is 1 more than 6 times the number of white beads. How many red beads does Naomi have?
Thursday, September 4, 2014 at 9:18pm

math
Order -3, 5, 16 and -10 from least to greatest. Then order the same numbers from closest to zero to farthest from zero. Describe how your lists are similar. Would this be true if the numbers were -3, 5, -16, and -10.
Thursday, September 4, 2014 at 9:13pm

math
Write as fraction or mixed number 1.004
Thursday, September 4, 2014 at 9:06pm

math
The least common multiple of two numbers is 60, and one of the numbers is 7 less than the other number. What are the numbers? Justify your answer. Any help would be greatly appreciated. Thanks in advance.
Thursday, September 4, 2014 at 8:44pm

Math
solve the variable e+17-91
Thursday, September 4, 2014 at 8:43pm

math
I counted a total of 40 white and yellow cars. I have 9 times as many white cars as yellow how man white cars do I have?
Thursday, September 4, 2014 at 8:43pm

Math
John has some marbles. Sally has 5 more than twice as many as John. Ingrid has 4 times as many marbles as John. If the three friends have 96 marbles in all, how many marbles does each person have? Write an algebraic equation (NO GUESS AND CHECK!) and solve
Thursday, September 4, 2014 at 8:36pm

Math
factor: a^2/36 - b^2/49 show all your steps please !
Thursday, September 4, 2014 at 7:48pm

math
The least common multiple of two numbers Is 60 , and one of the numbers is 7 less than The other number. What are the numbers
Thursday, September 4, 2014 at 7:44pm

math
Show that if a radioactive substance has a half life of T, then the corresponding constant k in the exponential decay function is given by k=-ln(2)/T I'm confused about how to show that that is true.
Thursday, September 4, 2014 at 7:33pm

math rounding
this 7 digit number is 8,920,000 when rounded to the nearest ten thousand? The digits in the tens and hundreds place are the least and same value . THe value of the thousands digit is double that of the the thousands digit. THe sum of all its digits is 24.
Thursday, September 4, 2014 at 7:12pm

Math
Difference between Whole and Natural numbers
Thursday, September 4, 2014 at 6:54pm

Math
The measures of two supplementary angles are (10X-25) and (15X+50). Find the measure of the angles
Thursday, September 4, 2014 at 6:22pm

math
Peter & Diane have the same average in mathematics. On the next test Diane scored 97% and her aver age improved to 90%, but Peter scored 73% and his average decreased to 87%. How many tests had proceeded this last test?
Thursday, September 4, 2014 at 5:56pm

math
What is the smallest six digit number you can make that would round to 126000?
Thursday, September 4, 2014 at 5:47pm

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