Thursday

August 28, 2014

August 28, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math Please Help!!**

Lynbrook West, an apartment complex, has 100 two-bedroom units. The monthly profit (in dollars) realized from renting x apartments is represented by the following function. P(x) = -8x2 + 1760x - 31000 (a) What is the actual profit realized from renting the 61st unit, assuming ...
*Friday, March 29, 2013 at 4:37pm*

**Math**

Williams Commuter Air Service realizes a monthly revenue represented by the following function, where R(x) is measured in dollars and the price charged per passenger is x dollars. R(x) = 4800x - 120x2 (a) Find the marginal revenue R'(x). R'(x) = ?? (b) Compute the ...
*Friday, March 29, 2013 at 4:35pm*

**Math**

Need help on this question: There are 32 sixth graders and 44 seventh graders in the video gaming club. Which ration is greatest? a. the ration of 6th graders to 7th graders b. the ration of 6th graders to club memebers c. the ratio of club members to sixth graders d. the ...
*Friday, March 29, 2013 at 4:04pm*

**Math: Finding m<A**

ABC~DEF m<B = 25', m<D = 45', m<E = 25' How do find m<A?
*Friday, March 29, 2013 at 2:41pm*

**math**

if the lenght of rectangle is 20cm and bridth is 5cm find the side of square which is equiangular with the rectangle
*Friday, March 29, 2013 at 1:35pm*

**Math 0098**

The sum of three numbers is 113 . The second number is 3 times the third. The first number is 7 less than the third . What are the numbers?
*Friday, March 29, 2013 at 1:33pm*

**math**

a wire of 100cm is bent to from a squre. if a rectangle is formed with same wire having length 5cm more and breadth 5cm less than each side of the square find the difference between the area of the squre and rectangle
*Friday, March 29, 2013 at 1:32pm*

**math**

tiles are fitted on the ground of a rectangle hall having length 5m and breadth4m find the number of tiles if they are square shaped having each side 25cm
*Friday, March 29, 2013 at 1:28pm*

**Math**

Seattle Chocolates for the year ended December 31, 2002: The following are selected items from the accounting records of Seattle Chocolates for the year ended December 31, 2002: Note payable to northwest Bank $500,000 Income taxes payable 40,000 Accrued expenses and payroll ...
*Friday, March 29, 2013 at 12:42pm*

**math**

A cleaner charges $0.50 per square foot to polish wood floors. A school hall has a floor area of 30 feet by 50 feet. What would be the total cost to polish the floor of the school hall? A.$80 B.$375 C.$750 D.$1,500
*Friday, March 29, 2013 at 12:02pm*

**Math-Algebra**

The area of a rectangle is represented by 5x^2+19x+12. What is the length?
*Friday, March 29, 2013 at 11:16am*

**math**

(John worked for 8 weeks and earned $200. If he works five days per week, how much did he earn per day?)
*Friday, March 29, 2013 at 11:13am*

**Math**

Harper Co. has outstanding $100 million of 5% bonds, due in 7 years, and callable at 102. The bonds were issued at par and are selling today at a market price of 92. If Harper Co. retires $10 million of these bonds by purchasing them from bondholders at current market price, ...
*Friday, March 29, 2013 at 11:10am*

**math**

determine whether the following is a difference of squares . 12^2 - y^2
*Friday, March 29, 2013 at 11:00am*

**math**

determine whether the following is a perfect-square trinomial. x^2- 16xy + 64y^2
*Friday, March 29, 2013 at 10:58am*

**math**

solve by factoring and using the principle of zero product.? 9k^2 = 27k -81
*Friday, March 29, 2013 at 10:55am*

**math**

the floor of a room is rectangle in shape its length is 5 meter and breadth is 4 mete. the area of its four walls is 108 sq.m. find its height
*Friday, March 29, 2013 at 5:29am*

**math**

the perimeter of a rectangular sheet is 125cm , breath is 21.4cm what is its length?
*Friday, March 29, 2013 at 4:02am*

**math- please help**

a copy machine makes c copies in m minutes according to the equation c=60m. what is the unit rate of copies per minute? I think it is m but not sure, can you help me understand how to figure out this equation. Please help! Thanks
*Thursday, March 28, 2013 at 11:28pm*

**Math**

-5(t-8)-(t+7)=6
*Thursday, March 28, 2013 at 11:08pm*

**Math**

What is 9/20 in simplest form?
*Thursday, March 28, 2013 at 10:53pm*

**math**

The ocean covers about 71% of the Earth’s surface. If the total surface area of the Earth is about 510 million square kilometers, how many square kilometers are covered by the ocean?
*Thursday, March 28, 2013 at 10:33pm*

**Math**

the larger of the two numbers is 8 more than twice the smaller. The sum of the numbers is 10 less than three time the larger. Find the numbers
*Thursday, March 28, 2013 at 10:13pm*

**math**

mary jogged 5 7/10 miles on monday and 4 1/8 miles on tuesday. Raul jogged 6 1/2 miles on monday and 3 4/5 miles on tuesday. How much farther did raul jog on monday than tuesday.
*Thursday, March 28, 2013 at 8:41pm*

**Math**

Let log 2 = a, log 3 = b and log 7 = c. Express the indicated logarithm in terms of a, b, and c. 1-log3 5 (3 is the subscript of the log) ans:(1-a)/b, i need someone to show me the step bcus my ans is different from the given ans. my ans=(1/a)-b.
*Thursday, March 28, 2013 at 8:33pm*

**Math**

All numbers in our real number system are the product of prime numbers. Complete the following steps for this discussion: 1. List the ages of two people in your life, one older than you and one younger than you. It would be best if the younger person was 15 years of age or ...
*Thursday, March 28, 2013 at 7:29pm*

**math**

need to know how to find the distrbutive property of 50x62,159= (50x )+(50x )+(50x100)+(50x50)+(50x9)
*Thursday, March 28, 2013 at 7:03pm*

**math**

The scatter diagram of midterm scores and final scores in a large class is football shaped. For about 80% of the students, the regression estimate of final score based on midterm score is correct to within 15 points. For about 95% of the students, the regression estimate of ...
*Thursday, March 28, 2013 at 6:53pm*

**math**

how many posts will be needed if the fence has 47 sections?
*Thursday, March 28, 2013 at 5:23pm*

**math**

a copy machine makes c copies in m minutes according to the equation c=60m. what is the unit rate of copies per minute? I think it is m but not sure, can you help me understand how to figure out this equation. Thanks
*Thursday, March 28, 2013 at 5:17pm*

**Finite Math**

The reading list for a literature class has 6 fiction and 8 nonfiction books. A student is to write a report on 5 books from the list during the semester. The report must include at least 1 and at most 4 reports of fiction books. In how many ways can the selection of books be ...
*Thursday, March 28, 2013 at 5:08pm*

**math**

how many posts will be needed if the fence has 47 sections?
*Thursday, March 28, 2013 at 5:04pm*

**Math Plz help**

survey about the student government program at a school finds that of 245 students: 218 students like the program 27 students think the program is unnecessary If a circle graph were made from this data, what would the measure of the central angle be for the group that likes ...
*Thursday, March 28, 2013 at 5:01pm*

**math**

The population mean length of a hospital stay for surgery is 5.5 days and the standard deviation is 1.9 days. What percentage of patients are hospitalized for 3.9 days or less? I've read the book and looked at the explanation that it gives and it's not making any sense.
*Thursday, March 28, 2013 at 4:40pm*

**Math**

Write 2.97 as a fraction, decimal and percent
*Thursday, March 28, 2013 at 3:12pm*

**math**

Find the average cost function C associated with the following total cost function C. C(x) = 0.000007x3 - 0.06x2 + 110x + 76000 C(x) = ?? (a) What is the marginal average cost function C' ? C'(x) = ?? (b) Compute the following values. (Round your answers to three ...
*Thursday, March 28, 2013 at 2:59pm*

**math**

a lab assistant wants to make 5 liters of 27.8% acid solutions. if solutions of 50% and 13% are in stock, how many liters of each must be mixed to prepare the solution?
*Thursday, March 28, 2013 at 2:21pm*

**Math**

a park is 3/4 mile long and 1/2mile wide. Which fraction represents the ratio of the parks length to its width? I did it by 3/4 divided by 1/2 this equals 1 1/2 or 3/2 Is this correct?
*Thursday, March 28, 2013 at 2:11pm*

**Math**

Jimmy jumped into a lake from a 12-foot-high cliff with an initial upward velocity of 7 feet per second. Find the time in seconds it took Jimmy to enter the water. Use the model for vertical motion given by the equation h = -16 t squared + vt + s
*Thursday, March 28, 2013 at 1:49pm*

**math**

The Thompson Company uses standard costing and has established the following direct material and direct labor standards for each unit of Lept. Direct materials: 2 gallons at $4 per gallon Direct labor: 0.5 hours at $8 per hour During September, the company made 6,000 Lepts and...
*Thursday, March 28, 2013 at 1:46pm*

**math**

The total weekly cost (in dollars) incurred by Lincoln Records in pressing x compact discs is given by the following function. C(x) = 2000 + 2x - 0.0001x2 (0x 6000) (a) What is the actual cost incurred in producing the 1041st and the 2141st disc? (Round your answers to the ...
*Thursday, March 28, 2013 at 1:41pm*

**math**

Part 1 : Store equipment is purchased on January 1, 2002 at a cost of $14,000 and $1,000 was spent on its installation. The depreciation is written-off at 10% on the original cost every year. The books are closed on December 31, every year. Instructions: Prepare a Depreciation...
*Thursday, March 28, 2013 at 1:34pm*

**math**

the diamond taxi company charges an initial fee of $3.00 plus $2.00 per mile for each ride. a) using the table show the cost (C) of taking a taxi 0-5 miles number of miles cost(c) 1 ? 2 ? 3 ? 4 ? 5 ? can you show me to do the number of miles for 1 and then i'll try to do 2-5
*Thursday, March 28, 2013 at 12:24pm*

**math**

the diamond taxi company charges an initial fee of $3.00 plus $2.00 per mile for each ride. a) using the table show the cost (C) of taking a taxi 0-5 miles number of miles cost(c) 1 ? 2 ? 3 ? 4 ? 5 ? can you show me to do the number of miles for 1 and then i'll try to do 2-5
*Thursday, March 28, 2013 at 11:58am*

**math**

if in a spinner of 1-8 if the probability of even numbers is 4/8 and probability of multiple of 3 is 2/8. isn't the answer 6/8/
*Thursday, March 28, 2013 at 11:27am*

**Math**

the sum of 5 consecutive whole numbers is 2005. what is the sum of all the digits of these 5 numbers
*Thursday, March 28, 2013 at 11:19am*

**Quick Math Question **

How do I add time? If a person worked 4 1/2 hours on Monday, 4 1/2 hours on Tuesday and 2 hours on Wednesday, does that add up to 12 hours? If not, how much more time would the person need to work the next day to equal 12 hours?
*Thursday, March 28, 2013 at 11:02am*

**Math**

47 Fahrenheit = Celsius give answer in decimal form, to the nearest tenth?
*Thursday, March 28, 2013 at 10:40am*

**math**

A supply company sells packs of paper by the box. Each box contains the same number of packs of paper, P. Which equation could be used to find the total number of packs of paper, T, that would be in B boxes ordered?
*Thursday, March 28, 2013 at 10:06am*

**Math**

the perimeter of a rectangular field is 140m. If the length is increased by 15m and breadth is decrease by 5m, the length will become 3 times the breadth. Find the length of breadth of the field.
*Thursday, March 28, 2013 at 9:55am*

**5th grade math**

how do i convert milligrams to grams- i am in fifth grade-easiest way please.
*Thursday, March 28, 2013 at 9:25am*

**math**

The pie chart shown in Figure A-6 illustrates the favorite foods of a selected group of fiveyear- old children. A total of 5,280 children were polled in order to construct this chart. According to the information provided in the chart, how many children chose pizza
*Thursday, March 28, 2013 at 7:03am*

**math**

the ages of a son and father are in the ratio 3:8. if the son is 35 years younger than his father. find their ages.
*Thursday, March 28, 2013 at 3:22am*

**Math**

if 4/3 x 3/4 =5k whats k
*Thursday, March 28, 2013 at 2:52am*

**Math**

Harry drove for 6 hours on the freeway, then decreased his speed by 20 miles per hour and drove for 5 more hours on a country road. If his total trip was 648 miles, then what was his speed on the freeway?
*Wednesday, March 27, 2013 at 11:56pm*

**math**

Write an inequality that represents the statement: x is less than 4 and greater than 1
*Wednesday, March 27, 2013 at 10:43pm*

**math**

solve: 6 < x + 4 less than or equal to 11
*Wednesday, March 27, 2013 at 10:41pm*

**math**

The temperature in degrees Fahrenheit is equal to 32 more than 9/5 times the temperature in degrees Celsius. One day the high temp. was 95 degrees Fahrenheit. What was the high temp. in degrees celsius? I did 32+(9/5*35) 32+63=95 so my answer is 35 degrees celcius, Is this ...
*Wednesday, March 27, 2013 at 10:40pm*

**math**

You are at the music store to buy some CDs. You have $45 to spend and the store sells CDs for 12.99 each. Write an inequality that represents the number, n, of CDs that you can buy without spending more money than you have. help greatly appreciated thk
*Wednesday, March 27, 2013 at 10:35pm*

**math**

Karina drew a shape with 2 pairs of parallel sides and no right angles. Which shape could Karina have drawn? A. square B. rhombus C. rectangle D. trapeziod
*Wednesday, March 27, 2013 at 10:14pm*

**math (ms sue) **

how would I factor x to the thrid + 3x squared - x -3 I got (x+3) (x squared -1) and my teacher marked me wrong.
*Wednesday, March 27, 2013 at 9:58pm*

**math**

Students are baking muffins to sell to raise money. They bake muffins in trays of 24 muffins each. They want to divide the muffins on each tray into equal packets. Which packet size would result in muffins from each tray being left over? A.3 muffins per packet B.6 muffins per ...
*Wednesday, March 27, 2013 at 9:57pm*

**math**

a cleaner charges $0.50 per square foot to polish wood floors. a school hall has a floor area of 30 feet by 50 feet. what would be the total cost to polish the floor of the school hall? A. $80 B. $375 C $750 D $1,500 I think it is C.
*Wednesday, March 27, 2013 at 9:35pm*

**Math**

Convert 2x-y>2 to slope intercept form.
*Wednesday, March 27, 2013 at 8:33pm*

**Math**

a 55 kg skateboarder on a 3 kg board starts coasting on level ground at 8 m/sec. Let k=3.2 kg/sec. About how far will the skater coast before reaching a complete stop?
*Wednesday, March 27, 2013 at 8:07pm*

**Math**

Hi i'm having trouble with a question. it states During the Summer you take 2 part time jobs. The first job pays $5 per hour. The 2nd Job pays $8 per hour. You want to earn at least $150 a week and work 25 hours or less a week. Write a system of inequalities that model the...
*Wednesday, March 27, 2013 at 8:03pm*

**Math**

Order fractions 3/6 5/6 4/10 from greatest to least
*Wednesday, March 27, 2013 at 8:03pm*

**MATH HELP!!!!!**

TOMMY WANTS TO HELP KATHY BRING APPLES TO HER GRANDMOTHER'S HOUSE. TOMMY HAS A BUCKET OF 5 APPLES. HE GAVE KATHY 2 APPLES TO PUT IN HER BUCKET. CALCULATE THE SUN'S MASS.
*Wednesday, March 27, 2013 at 7:59pm*

**Math Olympiad**

Lara starts at the bottom of a long staircase. She climbs exactly 2/3 of the stairs. Then, she goes back down exactly 1/2 of the way to the bottom. From that spot, she climbs exactly 2/3 of the way to the top. Finally from there, she climbs 6 stairs to reach the top. How many ...
*Wednesday, March 27, 2013 at 7:42pm*

**MATH**

IF CATHY IS 24 YEARS OLD, HOW OLD WILL CATHY BE IN Y YEARS? Y - 24 Y + 24 24 - y 24 / Y
*Wednesday, March 27, 2013 at 7:21pm*

**math**

Suppose z is a complex number such that z^5 = -\sqrt{3} + i and z = \sqrt[5]{2} ( \cos n^{\circ} + i \sin n^{\circ}) , where 270 < n < 360 . Find the exact value of n .
*Wednesday, March 27, 2013 at 7:09pm*

**math**

A FARMER BUILT A PEN FOR HIS FAVORITE PIG. THE PEN SHOWN BELOW HAS AN AREA OF 50 SQUARE FEET.THE PEN IS TWICE AS WIDE AS IT IS LONG AND HAS A PERIMETER OF 30 FEET. WHAT IS THE LENGTH, IN FEET OF THE PEN.
*Wednesday, March 27, 2013 at 6:54pm*

**math**

whats 4x+28=4(x+3)+16
*Wednesday, March 27, 2013 at 6:45pm*

**Math**

AlgebrAic factorization 1)6(2a-3)(a+7)+18(2a-3)(3a+2) 2) (3x-4)(5x+1)-(5x+3)(4-3x) I know number 1 and 2 but just wanted to make sure if my answers I need help in this only: 3) (3x-1)^2 + 5(1-3x)+3x(1-3x)^2
*Wednesday, March 27, 2013 at 6:40pm*

**math**

How do you do the math for the problem 14 - 7 × 2
*Wednesday, March 27, 2013 at 6:29pm*

**Math**

need help on this review question. Determine each sum by writing an equivalent numberical expression using Commutative and Associate properties. 3 + 9 + 7 + 6 For commutative could you just put 3 + 7+ 9 + 6? I'm confused on what do do for associative since there are no ...
*Wednesday, March 27, 2013 at 6:04pm*

**math**

When lashone won a contest she got a silver medal with a diameter of 6 centimeters. What is the medals area?
*Wednesday, March 27, 2013 at 6:02pm*

**Math**

Not sure how far to take this problem down. The directions say to simplify using the distributive property. 4(x + 1) -2 divided by 2. Would it be 4x +4 -2 divided by 2 or 4x + 2 divided by 2 or 2x +1? Thanks..
*Wednesday, March 27, 2013 at 6:01pm*

**math**

find the rule: X=8,9, 10,11,12 y=8,10,12,14,16
*Wednesday, March 27, 2013 at 5:43pm*

**Math**

What is the scale and interval on a bar graph and line graph
*Wednesday, March 27, 2013 at 5:34pm*

**Math**

The face painting booth has 1/4 pint of paint. There are five students who want their faces painted. How much paint should we use for each child?
*Wednesday, March 27, 2013 at 5:31pm*

**Math**

The popcorn booth serves tubs that weigh 3/74 of a pound. Mrs. Taylor has a box that weights 6 ponds. How many tubs can she make from the box?
*Wednesday, March 27, 2013 at 5:30pm*

**Math**

Mr. Brown bought 4 boxes of stickers to school. Each student that came to his class received 1/5 of the box. How may students will get a sticker before they run out?
*Wednesday, March 27, 2013 at 5:29pm*

**5th grade math (word problems)**

I'm not sure how to solve this problem. I know that i need to divide 36 cookies. But not sure how to figure out the number of groups. Am i using multiples of 4? Marie made 3 dozen cookies. She needs to dived them evenly into groups greater than 4. What are all the possible...
*Wednesday, March 27, 2013 at 5:00pm*

**Math**

Fence needs to be built for 6 children with 75 sq feet for each child. What would length and width be for fence in feet?
*Wednesday, March 27, 2013 at 4:35pm*

**math**

The point (5, -7) is dilated by a scale factor of 4 about the origin. Find the location of the new point. Show your work.
*Wednesday, March 27, 2013 at 4:00pm*

**Bus Math**

i need to earn 61000 over 5 years. at 6% interest semiannually what is my first deposit?
*Wednesday, March 27, 2013 at 3:45pm*

**Math**

For questions 4–5, use the following two ways to display the test scores recieved on Mr. Alexander's math test. Use these displays to solve each problem. Stem | Leaf 6 | 8 9 7 | 0 3 5 8 9 8 | 1 2 2 5 7 8 8 9 9 | 0 2 3 Pie Chart: 80-89= 44.4% 90-99=16.6% 70-79=27.7% 60...
*Wednesday, March 27, 2013 at 3:30pm*

**math**

What percentage of the total students chose skateboarding? (1 point) 10% 20% 30% none of these if 2 bys and 1 girl chose skateboarding? What percentage of the boys chose walking? (1 point) 30% 45% 25% none of these
*Wednesday, March 27, 2013 at 3:02pm*

**math**

A parallelogram has an area of 8x^2 - 2x -45. The height of the parallelogram is 4x + 9. I know the formula for a parallelogram is A=bh. Please work and explain how I get the length of the base of the parallelogram. Thanks
*Wednesday, March 27, 2013 at 2:38pm*

**Math**

If f(x)-lnx,g(x)=e^8x, and h(x)=x^7, find the following: a. (f.g)(x). what is the domain of f.g? b.(g.f)(x). what is the domain of g.f? c. (f.h)(x). what is the domain of f.h? I have no clue how to do this. Somebody please help me?? please???
*Wednesday, March 27, 2013 at 2:30pm*

**Math**

Algae is 5 yrs younger than berenice. Tomas is 7 yrs older than berenice. The sum of ages of the three togather is 83' , how old is each? So i did berenice : x Algae: x-5 Tomas: x+7 x+(x-5) + x+7 = 83 buthow old is each??
*Wednesday, March 27, 2013 at 1:59pm*

**math**

U.S. cement export date for the last 10 years in thousand tons: 746, 625, 633, 759, 803, 791, 743, 694, 738, 834 Find the mean number of tons exported for the period. I don't understand how to set this up.
*Wednesday, March 27, 2013 at 1:42pm*

**Math**

Algebraic factorization (2x-5)(3x+2)-(4x-10)(5x+4)
*Wednesday, March 27, 2013 at 12:33pm*

**math**

5^0/5^-6 * 1/5^-11 / (5^2)^4/(5^10)^2
*Wednesday, March 27, 2013 at 12:27pm*

**math**

On Friday, Lewis saw a certain number of hummingbirds, h. On Saturday, He saw 3 more than twice the number of hummingbirds he saw on Friday. Write an expression for the number of hummingbirds Lewis saw on Saturday.
*Wednesday, March 27, 2013 at 11:59am*

**Math**

Hiro went to the store after school to pick up groceries. His list said he needed to pick up one jug of milk, one loaf of bread, one dozen eggs and one package of cookies. Milk comes in 1%, 2% and 3.25% varieties. Bread comes in white and 100% whole wheat. Eggs come in small, ...
*Wednesday, March 27, 2013 at 11:47am*

**math**

An open box is made from a rectangular piece of cardboard measuring 16 cm by 10cm. Four equal squares are to be cut from each corner and flaps folded up. Find the length of the side of the square which makes the volume of the box as large as possible. Find the largest volume
*Wednesday, March 27, 2013 at 11:42am*

**math**

the sum of five consecutive numbers is 28 more than the sum of the third and the fifth numbers.find the consecutive numbers
*Wednesday, March 27, 2013 at 7:45am*

**Math**

(x-5)^2 - 3(4-x)(5-x)
*Wednesday, March 27, 2013 at 6:51am*

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