Homework Help: Math

Branches of Math

Recent Homework Questions About Math

math
if the perimeter of rectangle is 50cm and its length is 5 cm greater than its breadth find its area please give answers with method
Saturday, March 30, 2013 at 12:46am

math
Henrietta lives 8 7/10 miles from school. She lives 5 1/10 miles from the library. How much farther does Henrietta live from her school than from the library? A.3 3/5 miles B.3 3/4 miles C.13 3/5 miles D.13 3/4 miles
Friday, March 29, 2013 at 11:41pm

math
An elementary school collected a total of 240 cans during a food drive. Grade 3 students collected 1/3 of all the cans grade 4 students collected 52 cans, and the rest of the cans were collected by grade 5 students. How many cans did grade 5 collect? A.28 B.80 C.108 D.188
Friday, March 29, 2013 at 11:34pm

math
Sondra receives an allowance of $10 per week, plus an additional $5 for each chore she completes. Which graph represents Sondra's earnings?
Friday, March 29, 2013 at 11:32pm

Math
How many cartons measuring 3 feet by 2 feet by 6 inches can be stored in a space that is 15 feet by 9 feet by 24 feet. Assume no space is wasted. Explain your answer.
Friday, March 29, 2013 at 11:28pm

Math puzzle
Make the number 500 by mathematically combining eight 4's. You may use addition, subtraction, multiplication and division. You may also "push" them together.(44)
Friday, March 29, 2013 at 11:26pm

7th grade math
Q:Sabrina is making two bird feeders in the shape of right rectangular prisms. The smaller feeder has dimensions that are 1/4 of the dimensions of the larger feeder. Using the formula V=lwh, how do their volumes compare??? A: A) The volume of the larger feeder is 4 times as ...
Friday, March 29, 2013 at 11:14pm

Math ASAP please
1. P(number < 2) (1 point) 1/6 2/6 4/6 3/6 2. P(number ≥ 3) (1 point) 4/6 1/6 2/6 5/6 3. P(complement of 4) (1 point) 1/6 5/6 2/6 4/6 4. A multiple choice question has 5 possible answers. What are the odds in favor of guessing the right answer? (1 point) 1:5 4:1 1:4 3...
Friday, March 29, 2013 at 9:59pm

7th grade math
A restaurant donates 2 cans of soup to charity for every 9 bowls of soup it sells. The number of cans of soup donated by the restaurant is proportional to the total number of bowls of soup sold. Which equation represents the relationship between b, the number of bowls of soup ...
Friday, March 29, 2013 at 9:29pm

math
three times as many children as adults attended a concert on Saturday. an adults ticket cost $7 and a child's ticket cost $3. the theater collected a total of $6,000. how many people bought tickets?
Friday, March 29, 2013 at 9:15pm

Math Movers
Movers A mover charges $500 for the first 100 miles plus $10 for each additional mile. If C represents the charge and M represents miles. What would the equation look like for this question?
Friday, March 29, 2013 at 8:51pm

math
Tina solved for the decimal value 0f (3/5*18) and got an answer of 5.4. Four of her classmates argued that her answer was not reasonable. Which of the following statements best explain why that value can not =5.4 A. the number 18 is a multiple of 3 , so the answer must be a ...
Friday, March 29, 2013 at 8:29pm

Math
Every point (x,y) on the curve y=log23x is transferred to a new point by the following translation (x′,y′)=(x+m,y+n), where m and n are integers. The set of (x′,y′) form the curve y=log2(12x−96). What is the value of m+n?
Friday, March 29, 2013 at 8:23pm

math
Maura maintained a speed of 75mph. Write an equation to find any distance, d,that Maura traveled for any x hrs, x> or =2
Friday, March 29, 2013 at 6:46pm

math help please thank you
equation that passes points (1.3) and (8,5) a: y+1= 2/7(x+3) b: y-5= 2/7(x-8) c: y-1= 2/7(x+3) d: y+5= 2/7(x-8)
Friday, March 29, 2013 at 6:11pm

math
a number line below -5 -4 -3 -2 -1 0 1 2 3 4 5 Which of the expressions below represent the distance between -4 and 5 on the number line? [ ]= absolute value symbol A. [-4+5] B.[4-5] C.[-4-5] d.[-5-(-4)] I believe it is D, since the absolute value of a neg. number is positive...
Friday, March 29, 2013 at 5:34pm

Math
Which is the expression that can be factored using the greatest common factor for this equation? 6p^3-12p^2+9p A. 3(2p^3-4p^2+3p) B. 3p(2p^2-4p+3) c. 3p^2(2p^2-4p+3) D. 6p(p^2-2p+9) I believe it is B because only A and B work but B is the greatest common factor. Is this ...
Friday, March 29, 2013 at 5:23pm

Math
Radio stations use three or four letters for their call letters(name). The first letter must be a W or K. How many different call letters are possible if repeated letters are allowed? And not allowed?
Friday, March 29, 2013 at 5:10pm

Math
The product of three whole numbers is 36. Five more than the sum of the three numbers is a perfect square. What is the sum of the numbers?
Friday, March 29, 2013 at 5:07pm

math
3y-9<or equal to 6x when written in slope-intercept form i got y<or equal to 2x-3 i think this is wrong please help?
Friday, March 29, 2013 at 5:02pm

math
The Sugar Sweet Company is going to transport its sugar to market. It will cost 4550 to rent trucks, and it will cost an additional 175 for each ton of sugar transported. Let c represent the total cost (in dollars), and let s represent the amount of sugar (in tons) ...
Friday, March 29, 2013 at 4:44pm

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
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

university
prove 2 | n^2 + n + 1
Wednesday, March 27, 2013 at 11:01am

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

Math
(2x+1)(x-5)-(4x+2)(3x+7)+(1+2x)
Wednesday, March 27, 2013 at 6:39am

Math
(a+4)(2x-3)+(a+4)(3x+1)
Wednesday, March 27, 2013 at 6:28am

Math
Factorize the following expressions: 1) 6a(3a-2)+12b(3a-2) I got : (3a-2)(6a+12b) But its not simplified, how do i simplify it
Wednesday, March 27, 2013 at 6:13am

Math
Mr. Green teaches band, choir, and math. This year, he has 57 students that take at least one of his classes. He teaches band to 25 students. There are 48 students who take either band or choir or both. There are 9 students who take both math and choir with Mr. Green. Use the ...
Wednesday, March 27, 2013 at 5:36am

Math
6a(3a-2) + 12b(3a-2) Is it correct if i multiplied 6a by 3a then 6a by -2 and so on?
Wednesday, March 27, 2013 at 5:07am

HELP WITH MATH PLEASE!!!!!!!!!!
What does 1/2 x 2 x 6 = ?
Wednesday, March 27, 2013 at 3:10am

math
A Triangle has sides 4,8,and 11. In a similar triangle the shortest side is 8 and the longest side is x. a) Write a proportion that models the situation. b) Solve the proportion for x.
Wednesday, March 27, 2013 at 2:44am

math
for the given functions f and g, find the specified value of the following functions and state their domains: f(x)=x-5; g(x)=2x^2 a.(f+g)(3)= b.(f/g)(3)= Can someone help me figure this out? pleeeease????
Wednesday, March 27, 2013 at 1:45am

math
The function f(x)=2x+8/3x-7 is one to one. Find its inverse, and check your answer. f^-1(x)= I haven't one clue how to do this...help me pleaaaase someone!
Wednesday, March 27, 2013 at 1:15am

math
determine whether the following is a difference of squares? -4x^2 + 4y^2
Wednesday, March 27, 2013 at 12:52am

math
factor completely. if the polynomial is prime, state this? -5b-66 + b^2
Wednesday, March 27, 2013 at 12:48am

math
solve the following exponential equation:show your work. e^x-e^-x/2=7 1. write exact answer. 2.write answer approximated to 3 decimal places. whaaaat? smh I don't get it at all.
Wednesday, March 27, 2013 at 12:48am

math
use the given zero to find the remaining zeros of the function: F9x)=x^3-5x^2+4x-20; zero:2i I don't get it. Can someone please show me what to do with this?
Wednesday, March 27, 2013 at 12:24am

math
use the rational zero theorem to find all the real zeros of the polynomial function. use the zeros to factor f over the real numbers: f(x)=4x^4+9x^3+30x^2+63x+14 I cant even find sample problems to help me figure this out. help me please?
Wednesday, March 27, 2013 at 12:06am

Math
log(x-2) +log8 (x-4) =log6 (x-1)
Tuesday, March 26, 2013 at 11:47pm

math
How many integers satisfy the inequality \left| \frac { 10(x+1) } {x^2 + 2x + 3 } \right| \geq 1?
Tuesday, March 26, 2013 at 11:35pm

Geometry
When writing a math expression, any time there is an open bracket "(", it is eventually followed by a closed bracket ")". When we have a complicated expression, there may be several brackets nested amongst each other, such as in the expression (x+1)*((x-2...
Tuesday, March 26, 2013 at 11:27pm

math
solve the polynomial inequality and graph the solution set on a real number line. set in interval notation. x^3+2x^2-4x-8>0 I have been staring at this problem for the last 15 minutes because I just don't understand it, somebody please help me?
Tuesday, March 26, 2013 at 11:25pm

math pre calculus
find the following for the function f(x)=(x+5)^2(x-2)^2 a.find the x and y intercepts, b.find the power function that the graph ressembles for large values of x c.determine the maximum number of turning points on the graph of f d.determine the behavior of the graph of f near ...
Tuesday, March 26, 2013 at 11:00pm

Math (Please help)
you need to make 20ml of a 20% glucose solution. I need to calculate the amount of glucose and water needed. I know that the M.W is 180.16 for glucose. Would I multiply 20ml times 20 percent first? Thank you!
Tuesday, March 26, 2013 at 10:29pm

MATH, 3rd time i posted this
can someone please help me, i posted this like 3 times. i need help on a couple of questions. I did all my other questions but i need a lot of help with the word problems... 1. The side length of a small square is s. A larger square has a perimeter of 124.8 cm. Its sides are 3...
Tuesday, March 26, 2013 at 10:15pm

math
the function f is defined: f(x)= x+3 if -2<=x<1 9 if x=1 -x+2 if x>1 a. find the domain b. locate the intercepts I am totally lost, can someone please help me with this?
Tuesday, March 26, 2013 at 9:56pm

Math
i did the other one but can someone help me with this one: Four = fifths of the sum of a number and three is equal to six and a half. What is the number? also ms. sue deleting my question was not very nice because it took me forever to type it and if you didn't know it ...
Tuesday, March 26, 2013 at 9:56pm

math trigonometry
There is a small circle and a big circle. A small circle has a radius of 1.5. What is the area of the big circle?
Tuesday, March 26, 2013 at 9:54pm

Math
i need help on a couple of questions. I did all my other questions but i need a lot of help with the word problems... 1. The side length of a small square is s. A larger square has a perimeter of 124.8 cm. Its sides are 3.2 cm longer than those of the small square. a) ...
Tuesday, March 26, 2013 at 9:53pm

Math-Population Word Problem
The population of rabbits in a national forest is modeled by the formula P=8,600+650 ln(t+1) where "t" is the number of years from the present. a)How many rabbits are now in the forest b)Estimate when it will take for the number of rabbits to reach 12,000? c)Estimate...
Tuesday, March 26, 2013 at 9:34pm

math
and what would 0.1875 be as a fraction?
Tuesday, March 26, 2013 at 9:27pm

math
can someone tell me what would 0.0625 be as a fraction?
Tuesday, March 26, 2013 at 9:26pm

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