Branches of Math
Recent Math Questions
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
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
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
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
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
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
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
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
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 dont play for two weeks, how much %___ are you saving a week by not playing.
Saturday, September 6, 2014 at 8:48am
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
a rotating sprinkler is placed in one corner of a rectangular garden 12cm by 8cm and rotates through an angle of 30°. Calculate the area of the garden not being watered
Thursday, September 4, 2014 at 4:49pm
Ramon is to carpet the bedroom and the living rpom of his apartment. Find the area of the carpet he needs to order. If the carpet costs Php150 per square foot, how will his order cost Illustration 10 ft 15 ft. ------ I-------- 8 ft. I squIare I 8 ft. I I I ------I------- I I I...
Thursday, September 4, 2014 at 1:32pm
Which property is shown by 4+(5+6)=(4+5)+6 ? A. Communitive property of addition B.Distributive property C.Additive identity D.Associative property of addition Is the answer D?
Thursday, September 4, 2014 at 12:59pm
Tanya`s grandfather was 8 times older to her 16years ago.He would be 3 times of her age 8 years from now.Eight years ago,what was the ratio of tanya`s age to that of her grand father?
Thursday, September 4, 2014 at 12:08pm
Rewrite the following definition as a biconditional: Points that lie on the same line are collinear. A.) If a point lies on a line, then it is collinear. B.) If a point lies on a line with another point, then the two points are collinear. C.) If two points are collinear, then ...
Thursday, September 4, 2014 at 11:33am
1.) What is the conclusion of the following conditional? A number is divisible by 3 if the sum of the digits of the number is divisible by 3. A.) The number is odd. B.)The sum of the digits of the number is divisible by 3 C.) If the sum of the digits of a number is divisible ...
Thursday, September 4, 2014 at 11:24am
One side of the triangular flower garden has length of 4.5 m, the second side is twice as long as the first side. The length of the third side is 3 m less than that of the second side. What is the perimeter of the garden With solution
Thursday, September 4, 2014 at 9:53am