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August 22, 2014

August 22, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math lit ,geography,history,life science,LO**

Am in grade 10 and am doing these subjects and I dnt knw what kind of career choice I can choose please guys help me out please
*Thursday, May 8, 2014 at 4:34pm*

**Math**

***PS: I can't put the diagram so I type it.*** The diagram below shows the contents of a jar from which you select marbles at random. Inside the jar there is 16 marbles. Inside the jar there is 4 red marbles. 7 blue marbles. 5 green marbles. a. What is the probability of ...
*Thursday, May 8, 2014 at 3:58pm*

**math**

Joan moves into her apartment and wants to purchase a new couch. She wants to determine if there is any difference between the average cost of couches at two different stores. Test the hypothesis that there is no difference at a=0.05 Store 1 Store 2 x(sample mean).........$650...
*Thursday, May 8, 2014 at 3:53pm*

**math**

Andre picks a card at random. Without putting the first card back, he picks a second card at random. What is the probability that both cards will be hearts. The cards showing are three hearts and two diamonds
*Thursday, May 8, 2014 at 3:48pm*

**Math**

A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probability. Write the probability as a fraction in simplest form. a. Find the theoretical probability of selecting a pink rubber band. b. Find the ...
*Thursday, May 8, 2014 at 2:44pm*

**Math Help!**

1. Find the 4th term in the binomial expansion.(2x + 3y)^6 2. Use synthetic division and the remainder theorem to find P(a). P(x)= x^5 + 3x^4 + 3x − 7; P(-1) 3. Factor the expression on the left side of the equation. Then solve the equation. x^6 + 128x^3 + 4096 = 0 4.) ...
*Thursday, May 8, 2014 at 2:35pm*

**Algebra 2**

Hello! I need help with these four math problems. Thanks so much! :) 1.) ƒ(x) = (x^4)/4 − 3x^3 + (23x^2)/2 - 15x. Find the x values where the extremes occur. 2.) On a 10 question exam each question is worth 10 points (no partial credit). How ways can you make a 70...
*Thursday, May 8, 2014 at 2:29pm*

**math**

The current river flows at rate of 4mph. In order for a boat to travel 24 miles up river and then return in a total of 5 hours how fast must the boat be able to travel in still water?
*Thursday, May 8, 2014 at 2:27pm*

**Math**

Triangle L'M'N' is a dilation of triangle LMN. If the scale factor of the dilation is 1/5, which of the following statements is true? Triangle L'M'N' is a rotation of triangle LMN. Triangle L'M'N' is the same size as triangle LMN. Triangle L...
*Thursday, May 8, 2014 at 2:21pm*

**math probability**

A bag contains 12 marbles, 7 red and 5 green. The reds are numbered 1-7 and the green are numbered 1-5. If you pick 4 without replacing what is the probability that 2 of the 4 are numbered 5?
*Thursday, May 8, 2014 at 1:28pm*

**Math**

The distance require to stop a car varies directly as the square of its speed. If 250 feet are required to stop a car traveling 60 miles per hour, how many feet are required to stop a car traveling 96 miles per hour!
*Thursday, May 8, 2014 at 1:04pm*

**Math**

I have no idea how to calculate z scores Weights of the vegetables in a field are normally distributed. From a sample Carl Cornfield determines the mean weight of a box of vegetables to be 180 oz. with a standard deviation of 8 oz. He wonders what percent of the vegetable ...
*Thursday, May 8, 2014 at 12:45pm*

**math**

A customer is withdrawing $890 and wants as many $50 bills as possible. How many $50 bills should the Teller give her?
*Thursday, May 8, 2014 at 12:36pm*

**Math**

The trapezoid above has a base of 38 m and a height of 12 m. Which set of dimensions would produce a similar figure? A. base = 114 m, height = 36 m B. base = 38 m, height = 36 m C. base = 119 m, height = 36 m D. base = 109 m, height = 36 m
*Thursday, May 8, 2014 at 11:41am*

**Math**

Rectangles ABCD and EFGH are similar figures because angles A, B, C, and D are congruent to angles E, F, G, and H, respectively. If DA equals 19 units, AB equals 8 units, and HE equals 133 units, what does EF equal? A. 56 units B. 122 units C. 7 units D. 315.88 units
*Thursday, May 8, 2014 at 11:25am*

**math**

The shadow of a 5-foot tall post is 10 feet long. At the same time a tree casts a shadow that is 24 feet long. What is the height of the tree? A. 2 feet B.14 feet C. 12 feet D. There is not enough information to solve the problem
*Thursday, May 8, 2014 at 11:19am*

**math**

Consider the line 9x - 7y =4 What is the slope of a line parallel to this line? What is the slope of a line perpendicular to this line?
*Thursday, May 8, 2014 at 9:29am*

**Math**

There is an expression some people use that says, “What you put into it is what you get out of it.” People might use this expression to describe your skills at a sport or activity and how that relates to the amount of time and effort you spend practicing that ...
*Thursday, May 8, 2014 at 9:23am*

**Math**

A satellite dish in storage has parabolic cross sections and is resting on its vertex. A point on the rim is 4 ft high and is 6 ft horizontally from the vertex. How high is a point which is 3 ft horiozntally from the vertex? Draw a sketch and solve.
*Thursday, May 8, 2014 at 8:36am*

**math**

two forces of magnitudes 7N and 9N act at an angle alpha such that sin alpha=0.4. Find the magnitudes of the two possible resultants
*Thursday, May 8, 2014 at 8:34am*

**Math**

The numerator of a simple fraction is 2 less than its denominator. The sum of this fraction and its reciprocal is 2 4/35. Find this fraction.
*Thursday, May 8, 2014 at 8:27am*

**Math**

Two forces of magnitude 15N and 4root2N are acting in the directions 3i-4j and i+j respectively, find the magnitude of the resultant of the two forces.
*Thursday, May 8, 2014 at 8:19am*

**Math - Algebra**

In a thin rectangular tin sheet 8x12 sheet, you have to cut a rectangular opening. The area of the opening has to be 45 feet, and its edges have to have an equal distance from the edges of the sheet. Determine this distance.
*Thursday, May 8, 2014 at 8:05am*

**(19) Chemistry - Science (Dr. Bob222)**

Use the following information to answer this question: Cu+(aq) + e- → Cu(s) E° = 0.521V Cu2+ (aq) + e- → Cu+ (aq) E° = 0.153 V. Given these half cell reactions, an aqueous solution of Cu+ ion in the absence of O2(g) : A. will be thermodynamically stable B. ...
*Thursday, May 8, 2014 at 7:08am*

**Math**

How many different ways can the digits 1,2,3,4,5 be arranged to create a five digit password
*Thursday, May 8, 2014 at 7:02am*

**math -promissory notes**

1.Joanne borrowed RM5000 for 180 days at a discount rateof 8 1/2 %.find the proceeds. 2.A businessman needs RM12000 for four months. What should be the size of the loan if his bank charges a discount rate of 9.5%.
*Thursday, May 8, 2014 at 6:24am*

**math**

A mechanical toy on a circular track goes forward 3 in. and then backward 2 in. How many moves does the toy take to complete on 15 in. revolution of the track?
*Thursday, May 8, 2014 at 4:12am*

**Math - Algebra**

Ti'a rectangular gaden has perimeter of 20 meters. She wants its area to be at least 24 square metesr. Find the interval for the possible length of Tia's garden.
*Thursday, May 8, 2014 at 3:02am*

**Math**

Last will of an eccentric lady reads: I bequest $1000 less then one half of my estate to my beloved red cat. I bequest $800 less then one third of my estate to my favorite striped cat. I bequest $600 less then one quarter of my estate to my darling black cat. All my money must...
*Thursday, May 8, 2014 at 3:00am*

**math**

(-2x)^-6
*Thursday, May 8, 2014 at 2:11am*

**math**

A▲b = 2a-3b then 2▲(-3)=
*Thursday, May 8, 2014 at 2:03am*

**math**

(a^4b^6)^0
*Thursday, May 8, 2014 at 1:58am*

**Math 2**

Lauren used 1 quart of milk to make ice cream. What is the closest to this amount of milk? Answers are either. 100 liters, 100 milliliter a, 1 milliliter, or 1 liter. Can you help answer which one is closest
*Thursday, May 8, 2014 at 12:28am*

**math**

the fabric mart had cost of goods sold at $844,000 for the year.the beginning inventory at cost was $305,500, and the ending inventory at cost amounted to $414,200. the inventory turn-over rate published as the industry standard for a business of this size is five times...what...
*Thursday, May 8, 2014 at 12:09am*

**Math **

There are three times as many people in the psychology class as in the art history class. there are 16 more people in the algebra class then the art history class The total enrollment of the three classes is 86. How many students are enrolled in each class?. I need a little ...
*Thursday, May 8, 2014 at 12:06am*

**math**

The fabric mart had costs of goods sold at $844,000 for the year
*Wednesday, May 7, 2014 at 11:35pm*

**math**

Vanessa typically works 8 hours per day in a normal 5 day work week. Last week however vanessa had to take 90 minutss off on tuesday 45 minutes off on Thursday and she left rwo and a half hours early on friday how many hours did vanessa work last week
*Wednesday, May 7, 2014 at 11:02pm*

**math**

Jen and jacob want to put a cement deck around their pool. if the cement cost $4.75 per square foot, how much is the cost of the deck? round to the nearest hundreth.
*Wednesday, May 7, 2014 at 10:52pm*

**Math 12**

In Lotto 649, find the probability that: a) You have all six correct numbers. b) You have three correct numbers.
*Wednesday, May 7, 2014 at 10:40pm*

**Math 12**

A bag contains 5 red, 3 green, and 6 marbles. If a child grabs three marbles, find P(at least 2 blue marbles).
*Wednesday, May 7, 2014 at 10:39pm*

**Math**

A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probability. Write the probability as a fraction in simplest form. a. Find the theoretical probability of selecting a pink rubber band. b. Find the ...
*Wednesday, May 7, 2014 at 10:31pm*

**Math**

Circle the angle(s) that could never be the smallest angle of a triangle. 8 degrees 47 degrees 88 degrees 91 degrees
*Wednesday, May 7, 2014 at 9:54pm*

**MATH**

One particle(atom) of gold weight 197 atomic mass units. One atomic mass unit is approximately 1.6601 x 10^-24 grams. How many particles of gold are there in 197 grams of gold? Use scientific notation where and when appropriate.
*Wednesday, May 7, 2014 at 9:48pm*

**Math**

Your uncle has 36 coins in nickels and quarters. The value of his nickels is 1/15 of the value of his quarters. Find the number of nickels. Please show progress in answer.
*Wednesday, May 7, 2014 at 9:46pm*

**MATH**

LIGHT TRAVES AT 186,300 MILES PER SECOND. IF IT TAKES 8.32 MINUTES FOR LIGHT TO TRAVEL TO EARTH FROM THE SUN, HOW FAR AWAY FROM EARTH IS THE SUN. WRITE YOUR ANSWER IN SCIENTIFIC NOTATION.
*Wednesday, May 7, 2014 at 9:44pm*

**Math**

Triangle ABC is an isosceles triangle with angle A= 40 degrees. Give three possible values for angle B
*Wednesday, May 7, 2014 at 9:15pm*

**Math 12**

Five cards are dealt from a shuffled deck of 52. Find the probability that: a) The hand has 3 spades and 2 hearts. b) The hand has 2 aces, 2 kings, and one other card.
*Wednesday, May 7, 2014 at 9:13pm*

**Math**

Circle the angle(s) that could never be the smallest angle of a triangle. 8 degrees 47 degrees 88 degrees 91 degrees
*Wednesday, May 7, 2014 at 9:13pm*

**Math 12**

One hundred tickets are sold for a raffle. Three prizes are awarded. What is the probability that Andy wins first prize, Brianna wins second, and Cam wins third? What is the probability that Andy, Brianna, and Cam are the three winners (not necessarily in that order)?
*Wednesday, May 7, 2014 at 9:12pm*

**MATH!!!!!!!**

If theres 225 students in my grade and the requirement to get into the principal list is top 5%, how many students are in the principal list?
*Wednesday, May 7, 2014 at 9:03pm*

**Math**

A man owns a rectangular piece of land. The land is divided into four rectangular pieces, known as Region A, Region B, Region C, and Region D. One day his daughter, Nancy, asked him, what is the area of our land? The father replied: I will only tell you that the area of Region...
*Wednesday, May 7, 2014 at 8:42pm*

**math**

Problem Solving and Explain. The 52 students from Babcock school were divided into 9 squads for the Coast Trip . There are 25 parents including teachers attending. If we need to purchase 2 cookies for each person to eat for 2 nights, how many dozen cookies will wee need to buy...
*Wednesday, May 7, 2014 at 7:16pm*

**math**

The length of the tropical year us 365.24220 days, as compared to the length of 365.2425 days used by the Gregorian calendar. How many years will it take for this difference to amount to 8 days? Round to the nearest year.
*Wednesday, May 7, 2014 at 6:59pm*

**Help w/ Math PLS**

If a, b, and c are three integers in geometric progression, prove that the number a^2+b^2+c^2 is exactly divisible by the number a+b+c.
*Wednesday, May 7, 2014 at 6:56pm*

**Math**

The teacher gave this pattern to the class: the first term is 5 and the rule is add 4, subtract 1. Each student says one number. The first student says 5. Victor is tenth in line. What number should Victor say?
*Wednesday, May 7, 2014 at 6:48pm*

**Math**

Problem: The 52 students from Babcock school were divided into 9 squads for the Coast Trip . There are 25 parents including teachers attending. If we need to purchase 2 cookies for each person to eat for 2 nights, how many dozen cookies will wee need to buy for the Coast Trip?
*Wednesday, May 7, 2014 at 6:39pm*

**Math**

The table shows the number of people switching to a new telecommunications company over a 7-day period in August. Day=number of people 1=10 2=17 3=37 4=79 5=106 6=231 7=500 Using this estimate how many people will switch on august 31st. * it's an exponential and ...
*Wednesday, May 7, 2014 at 6:28pm*

**Math**

How would I answer this question? 7 is subtracted from one-third of r.
*Wednesday, May 7, 2014 at 6:24pm*

**math**

What is necessary to accelerate a 25 kg mass at m/sec?
*Wednesday, May 7, 2014 at 6:18pm*

**Math**

A carpenter has several boards of equal length. he cuts 3/5 of each board. After cutting the boards, the carpenter notices that he has enough pieces left over to make up the same length as 4 of the original boards. How many boards did the carpenter start with?
*Wednesday, May 7, 2014 at 6:16pm*

**math**

simplify 10p4 A. 210 B. 360 C. 5,040 D. 151,200 simplify 9c4 A. 126 B. 15,120 C. 5 D. 3,024
*Wednesday, May 7, 2014 at 6:09pm*

**math**

The length of the tropical year us 365.24220 days, as compared to the length of 365.2425 days used by the Gregorian calendar. How many years will it take for this difference to amount to 8 days? Round to the nearest year.
*Wednesday, May 7, 2014 at 6:06pm*

**math**

Bay Area Rental Cars charges $18 a day and $.14 per mile for renting a car. You rented a car for 4 days and drove 313 miles. Find your total cost for renting the car.
*Wednesday, May 7, 2014 at 6:03pm*

**math**

Chad buys peanuts in 2 pound bags. He repackages them into bags that hold 5/6 pound of peanuts. How many 2 pound bags of peanuts should Chad buy so that he can fill the 5/6 pound bags without having any peanuts left over?
*Wednesday, May 7, 2014 at 6:03pm*

**math**

mera painted equal sections of her bedroom wall to make a pattern. She painted 2/5 of the wall white and 1/2 of the wall lavender. Write an equivalent fraction for each using a common denominator.
*Wednesday, May 7, 2014 at 6:01pm*

**math**

A temperature measurement from earths stratosphere is taken as -70 degree Fahrenheit. The temperature on the earths surface below is found to be 41 degrees Fahrenheit. Find the difference between the surface temperature reading and the stratosphere temperature reading.
*Wednesday, May 7, 2014 at 6:00pm*

**math**

quadrilateral abcd is drawn in a plane so that ab=bc=cd and ac=bd=ad. what is the measure of angle abc
*Wednesday, May 7, 2014 at 5:56pm*

**math**

a basket contains the following pieces of fruit: 3 apples, 2 oranges, 2 bananas, 2 pears, and 5 peaches. Jameson picks a fruit at random and does not replace it. Then Brittany pricks a fruit at random. What is the probability that Jameson gets a banana and Brittany gets a pear...
*Wednesday, May 7, 2014 at 5:48pm*

**MATH PLEASE HELP MRS.SUE!**

What are the next three terms in the sequence? –1, 9, 19, 29, … (1 point) 38, 37, 32 40, 51, 62 39, 49, 59 38, 47, 56 2. Geoff planted dahlias in his garden. Dahlias have bulbs that divide and reproduce underground. In the first year, Geoff’s garden produced 6 ...
*Wednesday, May 7, 2014 at 5:40pm*

**math**

if you have a jar filled with candy and every time you take one candy out you put the wrapper back into the jar. the wrapper takes 10% of the volume of a piece of candy. How many times will you have to fill the jar before half the jar is filled with candy wrappers?
*Wednesday, May 7, 2014 at 5:37pm*

**math**

each of two urns contains green balls and red balls. urn I contains 8 green balls and 12 red balls. Urn II contains 5 green balls and 8 red balls. if a ball is drawn from each urn, what is P(red and red)? A. 79/65 B. 24/65 C. 20/33 D. 2/13
*Wednesday, May 7, 2014 at 5:29pm*

**math**

a bag contains 7 green marbles, 9 red marbles, 10 orange marbles, 5 brown marbles, and 10 blue marbles. you choose a marble, replace it, and choose again. what is P(read, then blue)? A. 77/164 B. 19/41 C. 90/1681 D. 45/41
*Wednesday, May 7, 2014 at 5:16pm*

**Math Question Please Help**

Two more students like math than science Half the number of students who like science like history. The number of student who like reading equals the number who like math and science combined. Two students like History. How many children (12) like each subject
*Wednesday, May 7, 2014 at 5:10pm*

**Math homework help**

Use half angle identities to find exact value. Given tan theta = -sqrt 2 / 2 and theta lies in quadrant IV, find cos theta / 2.
*Wednesday, May 7, 2014 at 5:08pm*

**math**

Food Express is running a special promotion in which customers can win a free gallon of milk with their food purchase if there is a star on their receipt. So far, 129 of the first 138 customers have not received a star on their receipts. What is the experimental probability of...
*Wednesday, May 7, 2014 at 4:58pm*

**Math**

A glass held 2/5 cup of water, Carlo poured out 3/8 cup, how much is left?
*Wednesday, May 7, 2014 at 4:47pm*

**math**

Diane plans to drive 30 miles to her interview. If she averages 25 miles per hour, how long will it take her to get there? Answers: (A) 50 minutes (B) 55 minutes (C) 1 hour and 12 minutes (D) 1 hour and 20 minutes
*Wednesday, May 7, 2014 at 4:44pm*

**math**

a number cube is rolled 150 times. the number 3 comes up 43 times. hat is the experimental probability of rolling a 3? what is the theoretical probability of rolling a 3? A. 43/150 ; 1/6 B. 43/150 ; 1/50 C. 1/6 ; 43/150 D. 3/43 ; 1/6
*Wednesday, May 7, 2014 at 4:32pm*

**Math**

The columbia icefield is located between banff and jasper in Alberta. It covers an area of more than 300 km squared and has ice that is up to 365 m thick in some places. How can studying this icefield give scientist information on climate patterns
*Wednesday, May 7, 2014 at 4:02pm*

**Math**

What amount should be accepted as equivalent, 60 days before an obligation of $1480 is due, if money can earn 6 3/4%?
*Wednesday, May 7, 2014 at 3:54pm*

**math**

The ABC Toy Company is creating two similar pieces for a board game as shown below. Find the value of b that makes the two pieces similar.
*Wednesday, May 7, 2014 at 3:04pm*

**math**

1. A bag contains 9 tiles numbered 1 to 9. P(4) = 1/9. what type of probability is illustrated and why? (1 point) . experimental; the result is found by repeating an experiment. . experimental; the result is based on the number of possible outcomes.**** . theoretical; the ...
*Wednesday, May 7, 2014 at 2:52pm*

**MATH **

Please help me solve this problem. My grandfather has a big collection of silver dollars and 50 cents pieces. He promised to give one fourth of his collection to the first of his grandchildren, who can figure out the total value of his coins. The only clues he will give are ...
*Wednesday, May 7, 2014 at 2:04pm*

**Math**

In Magic Diamond use numbers 1-12. Each row must equal the same sum. # # # # # # # # # # # #
*Wednesday, May 7, 2014 at 1:41pm*

**math**

Solve the problem. An average library contains at least 50 and at most 250 books. How many library owners must be polled to be certain that at least two owners have the same number of books in their libraries?
*Wednesday, May 7, 2014 at 12:02pm*

**Math (Quadratic Equations)**

A field is bound on one side by a river. A farmer wants to enclose the other three sides of the field with fence in order to create a rectangular plot of land for his cows. If the farmer has 400m of fence to work with, determine the maximum possible area of the field and the ...
*Wednesday, May 7, 2014 at 11:40am*

**Math**

You have six $1 bills, eight $5 bills, two $10 bills, and four$20 dollar bills in your wallet. You select a bill at random. Without replacing the bill, you choose a second bill. What is P($1, then $10)? A. 77/190 B. 3/100 C.3/95 D.2/5
*Wednesday, May 7, 2014 at 11:03am*

**Math**

A bag contains 5 green marbles, 8 red marbles, 11 orange marbles, 7 brown marbles, and 12 blue marbles. you choose a marble, replace it, and choose again. what is P(red then blue.)
*Wednesday, May 7, 2014 at 10:57am*

**Math**

A primary researcher is paid 80,000, two associates each are paid 45,000 a year. Each associate is responsibility for supervising up to eight sites. PT-Research assistants(2) are each paid 6,000 and are only able to support three sites each. The center must budget 30% of the ...
*Wednesday, May 7, 2014 at 10:52am*

**math**

Use the graph below to answer the following question. 1. Find the slope. (1 point) 2 – –2 Use the graph below to answer the following question. 2. Find the slope of the line. Describe how one variable changes in relation to the ...
*Wednesday, May 7, 2014 at 9:30am*

**math**

Ricki Cohn Encyclopedia sales Commission rate: 11% Month’s sales: $2,550 What is the monthly commission
*Wednesday, May 7, 2014 at 9:18am*

**math help!!!**

stuck!! pls help/explain!!! 2. Do the values in the table represent a linear function? If so, what is the function rule? (1 point) x = -2, 0, 2, 4 y = -4, 0, 4, 8 The values do not show a linear function. Yes, they show a linear function; y = x + 4. Yes, they show a linear ...
*Wednesday, May 7, 2014 at 8:32am*

**Algebra**

For their homecoming parade the students of U-Math have created a colorful banner, 53 meters in length, that is made of two pieces of parachute material. The short piece is 19 meters shorter then the long piece. Find the Length of each piece. Length of the long piece = Length ...
*Wednesday, May 7, 2014 at 7:25am*

**math**

6(a-b) - 5(2a + 4b)
*Wednesday, May 7, 2014 at 7:14am*

**math**

A company feeds 15000 people per day for one month at a cost of 3.95 but the next month they will increase the number of people by 30%. what is the total?
*Wednesday, May 7, 2014 at 3:58am*

**Math Problem**

An organization rents a 500 square foot office at a cost of $10 per square foot per year. How much must they pay
*Wednesday, May 7, 2014 at 3:45am*

**Math**

1. Historically,40% of the adopted dogs rescued spend an average of 8 days in a kennel costing $10 a day. Puppies-100 Dogs-650
*Wednesday, May 7, 2014 at 3:43am*

**Math**

Jamal invested $5000.00 in an account that earns 2.50% simple interest per annum for a term of 10 years. A.) How much interest will he earn? B.) How much will his investment be worth at the end of the term?
*Wednesday, May 7, 2014 at 12:27am*

**math**

Math two/y=2 ___ ____
*Tuesday, May 6, 2014 at 11:52pm*

**Math 3**

A school cafeteria serves. 60,000 ounces of milk during a 3 school week period. If the same amount is served each day, how much milk does the cafeteria serve each day?
*Tuesday, May 6, 2014 at 11:49pm*

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