Thursday

July 31, 2014

July 31, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math word problems**

A room is a square with integer dimensions. it is made 3 feet wider and 2 feet deeper. the increase in area is 46 square feed. What were the dimensions of the old room?
*Wednesday, June 4, 2014 at 9:22pm*

**math**

Appropriate reasons to use credit include for __________.
*Wednesday, June 4, 2014 at 8:40pm*

**math**

Student credit cards typically require that one be enrolled in a 2- or 4-year college/university and
*Wednesday, June 4, 2014 at 8:31pm*

**math**

The act requiring mortgage lenders to give borrowers HUD booklets and good faith estimates of the closing costs is called the
*Wednesday, June 4, 2014 at 8:25pm*

**Math**

Assume that it costs Apple approximately C(x) = 36,100 + 100x + 0.01x^2 dollars to manufacture x 30-gigabyte video iPods in a day. How many iPods should be manufactured in order to minimize average cost? What is the resulting average cost of an iPod? (Give your answer to the ...
*Wednesday, June 4, 2014 at 8:20pm*

**Math**

A polygon is a __ dimensional figure with ___ or more sides. A regular polygon has equal ____ lengths and equal ____ measures
*Wednesday, June 4, 2014 at 8:18pm*

**Math**

The sum of the degrees of the interior angles of a triangle is _____ degrees What is the sum of the interior angles of a parallelogram ? What is the sum of the interior angles of a rhombus? What is the sum of the interior angles of a kite? What is the sum of the interior ...
*Wednesday, June 4, 2014 at 8:00pm*

**Math**

Solve the optimization problem. Minimize F = x^2 + y^2 with x + 2y = 15. Thank You for the help!!
*Wednesday, June 4, 2014 at 7:58pm*

**Math - Business Calc. **

Chocolate Box Company is going to make open-topped boxes out of 5 × 17-inch rectangles of cardboard by cutting squares out of the corners and folding up the sides. What is the largest volume box it can make this way? (Round your answer to the nearest tenth.) Thank You ...
*Wednesday, June 4, 2014 at 7:55pm*

**Math**

Hi, I need someone to check my work and I have a question. Polygon: pentagon Number of sides: 5 Smallest number of interior triangles: 3 Now, here's my question: Sum of degrees of the interior angles: ___*180=_____ degrees
*Wednesday, June 4, 2014 at 7:51pm*

**Math**

You have 2 hundred feet of fencing to use for building a rectangular dog pen. find the dimensions of the pan having the greatest possible area
*Wednesday, June 4, 2014 at 7:14pm*

**MATH PLZ HELP**

I baked two dozen cookies (24)for my friends. After they came out of the oven at 2:00, I wait for them to cool. When playing video games, one friend says he needs to use the bathroom. he instead goes to the kitchen and steals one cookie. To have an excuse for going to the ...
*Wednesday, June 4, 2014 at 6:30pm*

**math**

Liam is the founder and president of the Justin Bieber Fan Club. As a fundraiser, the JBFC sells chocolate-flavored spaghetti sauce. The current price is $6.40 per jar and their average monthly sales are 250 jars. They are considering raising prices and have been surveying ...
*Wednesday, June 4, 2014 at 6:25pm*

**math**

A ladder is 13.0m long. It leans against the wall. The base of the ladder is 3.7m from the wall. What is the angle of inclination of the ladder to the nearest tenth of a degree?
*Wednesday, June 4, 2014 at 5:23pm*

**math**

A guy wire is attached to a tower at a point that is 5.5m above the ground. The angle between the wire and the level ground is 56 degrees. How far from the base of the tower is the wire anchored to the ground, to the nearest tenth of a metre?
*Wednesday, June 4, 2014 at 5:21pm*

**Math**

A frame around a photo is 5 cm wide. The photograph is 20 cm long and 10 cm wide. What percentage of the entire area is the frame.
*Wednesday, June 4, 2014 at 5:15pm*

**business math**

Check My Work (3 remaining) Mary Jo Prenaris is an office manager with gross earnings of $1,600 semimonthly. If her company switches pay schedules from semimonthly to biweekly, what are Mary Jo's new gross earnings? $ biweekly salary
*Wednesday, June 4, 2014 at 5:14pm*

**math**

A right cone has a height of 8cm and of volume of 250cm^3. Determine the radius of the base of the cone to the nearest centimeter.
*Wednesday, June 4, 2014 at 5:00pm*

**Math**

On a circle graph, how many degrees of the circle are measured for a category worth 34%
*Wednesday, June 4, 2014 at 4:57pm*

**math**

If you invest $23010.00 at an interest rate of 2.90% per annum compouded semo annually,what will the total value of your investment be after 9 years?
*Wednesday, June 4, 2014 at 4:56pm*

**math**

A local bank offers an investment option with a simple interest rate of 3.60% per annum. If you invest $3200.00, how much interest will you earn in 7 years?
*Wednesday, June 4, 2014 at 4:55pm*

**Math**

Mr. Caldwell has 28 students in his class and 12 of them are boys. What is the ratio of girls to boys? A. 4 : 7 B. 3 : 4 C. 4 : 3 D. 7 : 4
*Wednesday, June 4, 2014 at 4:31pm*

**Math**

If pq = 3, then p^3q^4 + p^4q^5 = A. 12q B. 7p + 9q C. 12p + 20q D. 96p E. 108q
*Wednesday, June 4, 2014 at 4:18pm*

**Math**

Can someone please explain how to solve this problem? A bag contains 6 blue marbles, 10 red marbles, and 9 green marbles. If two marbles are drawn at random without replacement, what is the probability that two green marbles are drawn?
*Wednesday, June 4, 2014 at 4:04pm*

**Math**

Consider the following data set: 27,49,15,43,35,57,13,73,23,31,32,41,61, 39,7. Suppose that you graph this data, with bins of size 10, with the first bin starting 1 below the smallest value in your data. What is the range approximation for the standard deviation of this data? ...
*Wednesday, June 4, 2014 at 3:39pm*

**Math **

Trudi Can Either Walk TO School, Or She Can Take The Bus. The Probability Of Her Taking The Bus On Any Given Day Is 0.77. Assuming That Her Choice Of Transport On Any Given Day Is Independent Of Her Choice Of Transport On Another Day, Find Out The Probability Of Her Taking The...
*Wednesday, June 4, 2014 at 3:15pm*

**Math**

A bag contains 7 black socks, 12 white socks, and 17 red socks. If you pick one sock at random from the bag, what is the probability that it will NOT be white? A. 1/2 B. 2 / 3 C. 3 / 4 D. 7 / 12 E. 7 / 36
*Wednesday, June 4, 2014 at 3:12pm*

**math word problem**

instead of buying packages of 20 batteries for $7.00 to power his video game controllers, Nathaniel decides to buy 4 rechargeable batteries and a charger for $15.39. How many times does he need to use the rechargeable batteries to make them a better value?
*Wednesday, June 4, 2014 at 2:46pm*

**math(log)**

find x if a) 1/81=3^2x-1 b)log2x+ 3/log2x = 4
*Wednesday, June 4, 2014 at 10:13am*

**Math**

If tanè = 4 / 3, then sinè = F. 3 / 4 G. 3 / 5 H. 4 / 5 J. 5 / 3 K. 5 / 4
*Wednesday, June 4, 2014 at 9:40am*

**math(urgent)**

A radio set costing $500 was marked up 20% based on retail price. later it was marked down by 10%. WHAT is the final retail price?
*Wednesday, June 4, 2014 at 9:08am*

**math**

A ladder leans against a building. The angle of elevation of the ladder is 70°. The top of the ladder is 25 ft from the ground. To the nearest tenth of a foot, how long is the ladder?
*Wednesday, June 4, 2014 at 8:50am*

**math**

Find the total number of compounding periods and interest rate per period. Princial: $700, time period :8yrs , nomial rate: 1.5%, interest compounding :monthly, copounding amount________, compound interest_______ * i need to figure outhe compounding amount & ...
*Wednesday, June 4, 2014 at 8:28am*

**MATH**

Solve the fractional equation 3x/2+1/4(x-2)=10
*Wednesday, June 4, 2014 at 8:03am*

**math**

The estimated completion time for a inspection consisting of 100 check points is 3 1/3 hours if u take away 3hours whats the estimated rate of completion per check point
*Wednesday, June 4, 2014 at 7:25am*

**math algebra?**

What does -4p < 36 equal?
*Wednesday, June 4, 2014 at 6:38am*

**math**

Find the shape whose total is 59(blue)..n the oder one having a total of 52(green)
*Wednesday, June 4, 2014 at 6:28am*

**Math please help**

Solve the equation x^2/5 + x^1/5 -6=0
*Wednesday, June 4, 2014 at 2:19am*

**Math**

Find the total number of compounding periods and interest rate per period. Terms investment: 6years, nomial rate: 18%, interest compounding :monthly, compounding period________, rate per period %_______ * i need to figure out the compounding period & rate per period%
*Tuesday, June 3, 2014 at 11:04pm*

**Math**

Two sides of a triangle measure 7 cm and 15 cm . Which of the following could not be the length of the third side ? A. 5 cm B. 9 cm C. 15 cm D. 22 cm I'm confused because at first I tried Pythagorean thereom and it didn't really work .
*Tuesday, June 3, 2014 at 10:58pm*

**math**

A rectangular field measures 350 feet by 400 feet. If you wish to go from one corner to the opposite corner, how much shorter is the trip if you walk along the diagonal rather than the edges?
*Tuesday, June 3, 2014 at 10:47pm*

**math algebra?**

What does -4p < 36 equal?
*Tuesday, June 3, 2014 at 10:21pm*

**math algebra? **

A circle has circumference of 56.52 ft. What is its area? Use 3.14 for pie.
*Tuesday, June 3, 2014 at 10:19pm*

**MATH**

Is the equation identity or conditional? 3(x+2)=3x+6 3(x+4)=3x+4
*Tuesday, June 3, 2014 at 10:07pm*

**math**

the simple interest received from investment is directly proportional to the amount of the investment. By investing $4000 in a municipal bond you obtain interest of $280 at the end of 1year. Find a mathematical model that gives the interest I at end of 1year in terms of the ...
*Tuesday, June 3, 2014 at 9:52pm*

**Math **

How can just adding one or subtracting one make the difference? I did the first one but can't come up with the second one. The first equation is: x = 4y + 1 Subtract 1 from both sides x - 1 = 4y Now divide both sides by 4 (x/4) - (1/4) = y My slope is (¼) and my y-...
*Tuesday, June 3, 2014 at 9:49pm*

**algebra math**

A deck has 12 cards numbered 1 to 12. Ashley needs a number greater than 9 to win a game. If she selects a card at random, what is the probability that she will win?
*Tuesday, June 3, 2014 at 9:17pm*

**math**

Simple interest the simple interest received from investment is directly proportional to the amount of the investment. By investing $4000 in a municipal bond you obtain interest of $280 at the end of 1year. Find a mathematical model that gives the interest I at end of 1year in...
*Tuesday, June 3, 2014 at 9:15pm*

**Math**

what are all of the possible rational roots for x to the third power- x squared-x +8=0?
*Tuesday, June 3, 2014 at 9:10pm*

**Math**

In math, negative minus negative equals what? Ex: -38-(-14) Please list all the other rules of multiplying, dividing, adding, and subtracting!! Thank you!!
*Tuesday, June 3, 2014 at 9:03pm*

**boring math**

A business purchases a piece of equipment for $25000. The equipment will be replaced in 10 years at which time its salvage value is expected to be $2000. Write linear equation giving the value V of the equipment during the 10years.
*Tuesday, June 3, 2014 at 8:50pm*

**linear math**

Is the equation identity or conditional? 3(x+2)=3x+6 3(x+4)=3x+4
*Tuesday, June 3, 2014 at 8:31pm*

**Math**

X^4+9x^3+9x^2= -81x Is it 0,-9,-3, and 3
*Tuesday, June 3, 2014 at 8:29pm*

**math**

simplify as much as possible. Assume that all variables represent positive real number 4x√32xv^2 + v√2x^3
*Tuesday, June 3, 2014 at 8:29pm*

**math**

The eyes of a basket ball player are 6 feet above the floor. He is at the free-throw line, which is 15 feet from the center of the basket rim. The center of the rim is 10 feet above the floor Determine the angle of elevation (to the nearest degree) from his eye to the center ...
*Tuesday, June 3, 2014 at 8:27pm*

**math**

Stuart estimates that he will need $25000 to set up a small business in 7years.How much must stuart invest at 12% interest compound quarterly to achieve goal?
*Tuesday, June 3, 2014 at 8:24pm*

**Math**

5x^4=5x Can you please help
*Tuesday, June 3, 2014 at 8:21pm*

**math**

draw a picture showing 4 pencils and a number of pens in which the ratio of pencils to pens is 2:3.
*Tuesday, June 3, 2014 at 8:18pm*

**math**

Frank was a jacket that cost $60 ESA $43 what is the fraction of the amount that he that he needs to saved
*Tuesday, June 3, 2014 at 8:07pm*

**math 1 question!!!!!!**

Which situation best represents a proportional relationship? (1 point) Kelly sold 2 rings for $3 and 3 rings for $6.<----- Lawrence packed 27 plates in 9 boxes and 81 plates in 27 boxes. Jeff ran 4 miles in 20 minutes and 6 miles in 24 minutes. Francesca placed 8 pencils in...
*Tuesday, June 3, 2014 at 7:47pm*

**math 1 question!!!!!!**

Which is equivalent to the expression shown when a > 0 and b > 0? -21a^2b/35ab A. 3a/5 B. -3a/5 C. -3ab/5 D. 3a/5b<---
*Tuesday, June 3, 2014 at 7:43pm*

**math**

Direct variation Y is proportional to x. Use the x value & y value to find a linear model that relates y and x. x=5, y=9 X=11, y=1.5
*Tuesday, June 3, 2014 at 7:38pm*

**math 1 question!!!!!!**

A fence encloses a rectangular field. The field is 4 meters longer than it is wide. The total length of the fence is 144 meters. What is the area in square meters of the enclosed field? 1192 1296 1292 1440
*Tuesday, June 3, 2014 at 7:14pm*

**math 1 question!!!!!!**

Tasha is going on a picnic. The probability that it will be sunny is 2/3. The probability that someone will bring potato salad is 7/9. What is the probability that it will be sunny and that someone will bring potato salad? 1/9 4/27 14/27 6/7<------
*Tuesday, June 3, 2014 at 7:10pm*

**MATH **

Slope : 3/2; y-intercept : (0,3)
*Tuesday, June 3, 2014 at 7:03pm*

**MATH Graph**

Sketch the graph of line y=1/2x+1
*Tuesday, June 3, 2014 at 7:02pm*

**math**

x – 3y = 25 x – 2y = 21 find the x and y values i think x=-13 and y=4 am i right?
*Tuesday, June 3, 2014 at 6:55pm*

**Math **

Given a 30 meter x 60 meter garden with a circular fountain with a 5 meter radius, calculate the area of the portion of the garden not occupied by the fountain. 30 x 60 = 1800 3.14 x 25 = 78.25/2=39.125 1800 - 39.125 = 1,760.875 but this is incorrect The answer choices are: A...
*Tuesday, June 3, 2014 at 6:18pm*

**Math**

A fence encloses a rectangular field. The field is 4 meters longer than it is wide. The total length of the fence is 144 meters. What is the area in square meters of the enclosed field? 1192 1296 1292<---- 1440
*Tuesday, June 3, 2014 at 6:11pm*

**math**

An oil-drilling company knows that it costs $25,000 to sink a test well. If oil is hit, the income for the drilling company will be $425,000. If only natural gas is hit, the income will be $155,000. If nothing is hit, there will be no income. If the probability of hitting oil ...
*Tuesday, June 3, 2014 at 5:55pm*

**math**

Suppose that people's heights (in centimeters) are normally distributed, with a mean of 170 and a standard deviation of 5. We find the heights of 60 people. (You may need to use the standard normal distribution table. Round your answers to the nearest whole number.) How ...
*Tuesday, June 3, 2014 at 5:55pm*

**math**

Solve the equations by finding the exact solution. 4 = x − 4
*Tuesday, June 3, 2014 at 5:54pm*

**math -logarithm **

Write the equations in logarithmic form. (a) 729 = 93(9 to the 3rd power) (b) 25 = 1/5 −2( 1/5 to the -2 power) a = bc ( c squared)
*Tuesday, June 3, 2014 at 5:52pm*

**math -logarithm **

Use the definition of logarithm to simplify each expression. log10 10,000 log10 10 log10 10−4
*Tuesday, June 3, 2014 at 5:50pm*

**math **

Decide whether you would use a permutation, a combination, or neither. Next, write the solution using permutation notation or combination notation, if possible, and, finally, answer the question. A club with 34 members is to select five officers (president, vice president, ...
*Tuesday, June 3, 2014 at 5:48pm*

**math **

Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.37 x 10−5 (10 to the -5 power) watts/cm2(squared)
*Tuesday, June 3, 2014 at 5:47pm*

**math **

Find the monthly payment for the loan. (Round your answer to the nearest cent.) $400 loan for 12 months at 14%
*Tuesday, June 3, 2014 at 5:45pm*

**math **

Assume the car can be purchased for 0% down for 60 months (in lieu of rebate). A car with a sticker price of $42,650 with factory and dealer rebates of $5,100 a-Find the monthly payment if financed for 60 months at 0% APR. (Round your answer to the nearest cent. b-Find the ...
*Tuesday, June 3, 2014 at 5:44pm*

**Math - Data Management**

If we take a sample of 2400 families with five children, a) what is the probability that a family will have exactly 2 girls? b) How many of the families would you expect to have exactly two girls?
*Tuesday, June 3, 2014 at 5:34pm*

**math **

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 125 and a variance of 25. The material is considered defective if the breaking strength is less than 113 pounds. What is the probability that a single, randomly selected piece ...
*Tuesday, June 3, 2014 at 5:32pm*

**Math**

list three different ways to write 5^11 as the product of two powers. Explain why all three of your expressions are equal to 5^11
*Tuesday, June 3, 2014 at 5:17pm*

**Math**

The ratio of adults to girls to boys on a class field trip was 1:4:5. If the trip included 6 more boys than girls, how many adults were with the group? A. 3 B. 4 C. 6 D. 8 E. 12
*Tuesday, June 3, 2014 at 4:20pm*

**Math**

Given the function rule f(x) = x2 - 5x + 1, what is the output of f(-3)? A. 7 B. -5 C. 25 D. 5 I think its 7, can you check please? Thanks!
*Tuesday, June 3, 2014 at 4:16pm*

**Math**

If f(x) = x^2 + 9 and g(x) = 24 + 4x, what is the value of f(4) / g(-1)? F. 0.75 G. 0.8 H. 1.2 J. 1.25 K. 1.75
*Tuesday, June 3, 2014 at 2:47pm*

**Math ~ Check Answers ~**

Explain how to write a function rule from the table below. Then write a function rule. X: 2 | 4| 6 | And: 1 | 0 | -1 | My Answer: y = -1/2 x But, -1/2 (2) = -1, and y(2) = 1, so we need to add 2 at the start. So, y = 2 - 1/2 x
*Tuesday, June 3, 2014 at 2:47pm*

**Math**

Two values of m satisfy the equation |5m - 11 | - 3m = 9. What is the result when you multiply these two values together? F. 2.5 G. 2.75 H. 3.2 J. 3.75 K. 4.25
*Tuesday, June 3, 2014 at 1:57pm*

**math**

In the word ' home work what percent of the letter are 'o'
*Tuesday, June 3, 2014 at 1:57pm*

**math**

a clock reads 4:00 pm. how many degrees will the minute hand turn in 15 minutes?
*Tuesday, June 3, 2014 at 1:54pm*

**Math**

An ice cream shop offers 7 toppings. How many 4-topping ice cream sundaes can you make? A)11 B)28 C)30 <-- My answer D)35
*Tuesday, June 3, 2014 at 12:30pm*

**math**

Copy of Consider the charged particle S2- Match the first column with the correct number in the second column. Note: •The same number may be used more than once, if necessary.. •Not every number will be used.
*Tuesday, June 3, 2014 at 11:26am*

**Math**

What is Numerical expression of nine increased by ten
*Tuesday, June 3, 2014 at 11:02am*

**Math**

Solve Y=-0.02x^2+1.3x+8
*Tuesday, June 3, 2014 at 10:54am*

**math!!**

A 9-pack of toy cars costs $8.58. What is the unit price, rounded to the nearest cent?
*Tuesday, June 3, 2014 at 10:35am*

**Math**

If the height of an equilateral triangle is 9, what is its area? F. 27 G. 54 H. 81 J. 27 sqrt(3) K. 54 sqrt (3)
*Tuesday, June 3, 2014 at 10:03am*

**math**

The sum of two numbers is 45 and the mean proportional betweem them is 18.the numbers are
*Tuesday, June 3, 2014 at 12:54am*

**math HELP!!!!!!**

Suppose 10% of the flights arriving at an airport arrive early, 60% arrive on time, and 30% arrive late. Valerie used the random-number table to find the experimental probability that of 5 flights, at least 2 will arrive late. The digit 0 represents flights arriving early. The...
*Monday, June 2, 2014 at 11:52pm*

**Math**

A system of inequalities may have no solution, but is there a case where there might only be one solution?
*Monday, June 2, 2014 at 11:50pm*

**math ratio **

What is the ratio of parents to students of 4:5. If there are 189 total spectators at the game,how many of them are parents. How many of them are students.
*Monday, June 2, 2014 at 10:44pm*

**Math**

What is -39 -(-24) -(-64) How do I do this
*Monday, June 2, 2014 at 10:16pm*

**Algebra - Math HW HELP!**

1) It is a five-digit whole number. 2) It is a palindrome. 3) Its tens digit is the cube root of a one-digit number. 4) The product of its hundreds digit and its ones digit is 54. 5) The sum of its hundreds digit and its ones digit is 15. 6) It is divisible by 4. 7) The sum of...
*Monday, June 2, 2014 at 10:09pm*

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Post a New Question | Current Questions