Friday

April 25, 2014

April 25, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

A student has a penny, nickel, dime, and quarter distributed two coins apiece to his front two pants pockets. What is the probability that the front right pocket has more then 30 cents in it?
*Saturday, March 8, 2014 at 2:48pm*

**Math**

Put the quadratics below into vertex form by completing the square. state the vertex. y=2x^2 - 4x-6
*Saturday, March 8, 2014 at 2:44pm*

**Math**

Put the quadratics below into vertex form by completing the square. state the vertex. a) y=x^2 - 4x-21
*Saturday, March 8, 2014 at 2:44pm*

**MATH**

The height h (in meters) of a cannonball t seconds after it is fired into the air is given by h=-4t^2+16t+9. a) What is the initial height of the cannonball? What feature does this correspond to on the graph? b) Find the height of the cannonball after 1 second. c) What is the ...
*Saturday, March 8, 2014 at 1:40pm*

**math**

Mrs Harvey Wants To Put a 50 m Long Fence around Her Rectangular Garden. She Only Needs To Fence In 3 Sides Because The Other Side Is Alongside Her House. y=length x=width (a) Write an Expression For y In Terms of x (b) Write an Expression For The Area ( A ) Of The Garden , In...
*Saturday, March 8, 2014 at 1:33pm*

**Math**

Find the standard form of the equation of a line passing through (2, 3) and parallel to 3x + 5y = 2
*Saturday, March 8, 2014 at 1:29pm*

**Math **

Mrs Harvey Wants To Put a 50 m Long Fence around Her Rectangular Garden. She Only Needs To Fence In 3 Sides Because The Other Side Is Alongside Her House. (a) Write an Expression For y In Terms of x (b) Write an Expression For The Area ( A ) Of The Garden , In Terms of x (c) ...
*Saturday, March 8, 2014 at 1:20pm*

**Math**

x varies directly as y3 . If x is 32 when y is 2, find x when y is –3
*Saturday, March 8, 2014 at 12:23pm*

**Math**

Given that f(x) = 2x2 – 3, find f(2)
*Saturday, March 8, 2014 at 12:20pm*

**Math**

The length of a rectangle is 3 cm less than 4 times its width. The perimeter is 74 cm. Find the length
*Saturday, March 8, 2014 at 11:42am*

**business math**

Paul Curcio earns $8.25 per hour for regular time up to 40 hours, time-and-a-half for overtime, and double time for the midnight shift. Last week Paul worked 58 hours, including 6 on the midnight shift. What are his gross earnings?
*Saturday, March 8, 2014 at 9:48am*

**Math~**

Mr. D. O. Nutt brought a baker’s dozen, or 13, pastries to the math department meeting. Everyone ate at least 1 pastry, some (not all) had 2, and one person had 3. What are the possible numbers of people who could be in the department?
*Saturday, March 8, 2014 at 12:24am*

**Math**

. If 111 → 13, 112 → 24, 114 → 46, and 115 → 57, complete the statement: 117 → ______. Explain how you got your answer in one or more complete sentences.
*Friday, March 7, 2014 at 11:47pm*

**MATH :D**

Mrs. Wilkerson noticed that her in-laws’ birth dates have an unusual property. Her mother-in-law was born 5-31-36, and her father-in-law was born 9-25-34. Furthermore, her hus- band’s grandfather was born 7-7-14. How many birth dates in a century have this property...
*Friday, March 7, 2014 at 8:49pm*

**Math Time**

1:30pm-2:5pm is 75 minutes right?
*Friday, March 7, 2014 at 7:13pm*

**Math Time**

From 1:30pm-2:15pm Is 75 minutes? I added 60 plus 15 If I'm wrong, please explain
*Friday, March 7, 2014 at 7:03pm*

**Math Time**

1:30pm - 2:30pm Is 110 minutes, correct? If not, how many minutes is it?
*Friday, March 7, 2014 at 6:49pm*

**Math**

Adrian jogs 3/4 mile each morning. How many days will it take him to jog 3 miles?
*Friday, March 7, 2014 at 6:11pm*

**MATH**

HELP PLEASE y = 3x2 + 2x – 1
*Friday, March 7, 2014 at 5:46pm*

**math**

im stuck on this problem can some one please explain.. y=9(7+4)^2+9
*Friday, March 7, 2014 at 5:45pm*

**math**

i need some help please 2x^2 +5-3
*Friday, March 7, 2014 at 5:39pm*

**math**

can someone help me and expalin how to do these five question please and thank you 11. y = ½ x2 +2x – 3 27. 3x2 – 5x = -3x2 + 6 33. x2 + 10x = -8 45. x2 – 6x + 9 = 0 47. (-3,0),(1,4),(-1,6),(2,0)
*Friday, March 7, 2014 at 5:11pm*

**Math Geometry **

Marisol is painting on a piece of canvas that has an area of 180 square inches. The length of the Painting is 1 1/4 times the width. What are the dimensions of the painting this is for elementary school so make it simple
*Friday, March 7, 2014 at 5:06pm*

**Math Geometry **

Marisol is painting on a piece of canvas that has an area of 180 square inches. The length of the Painting is 1 1/4 times the width. What are the dimensions of the painting
*Friday, March 7, 2014 at 4:54pm*

**Math**

In a cyclic quadrilateral ABCD twice angle BAD =three times angle DCB. Calculate angle BAD
*Friday, March 7, 2014 at 4:08pm*

**Math **

3. A textbook weighs 2.5 pounds. How many kilograms does the textbook weigh? Round your answer to the nearest tenth of a pound. 1kg = 2.2 lb 1.1 kg 1.8 kg 5.5 kg 4.7 kg (my answer) 5. Solve the proportion using cross products 18/20 = k/110 A. 99 B. 122 C. 3.3 ( my answer) D. 2...
*Friday, March 7, 2014 at 11:45am*

**math(QUESTION)**

Suzan has a 69 as her grade in a class. If she does a quiz worth 9% of her grade what will her grade be?
*Friday, March 7, 2014 at 11:13am*

**Math**

an ice cream parlor is giving away free icecream sundaes on opening day. the sundaes are assembled randomly from 7 types of ice cream, 2 types of sauce, and 5 kinds of toppings. find the probabilty.
*Friday, March 7, 2014 at 11:13am*

**Math **

Find the first four terms of the sequence represented by the expression. 3n + 5 A.5,8,11,14 B.8,11,14,17 C.3,6,9,12 D.0,8,11,14
*Friday, March 7, 2014 at 10:44am*

**math**

need help! solve for y 7y^2-52y-32=0
*Friday, March 7, 2014 at 9:55am*

**Math**

Determine the minimum number of students with scores of 90 required to have the class average over 75. Score 60,70,80,90. Number of students 7, 3, 8, ?
*Friday, March 7, 2014 at 9:51am*

**math**

11. A Certification Exam containing 20 true and false questions. If a student guesses at the answer to each question, what is the probability that she/he will get exactly 14 correct?
*Friday, March 7, 2014 at 5:27am*

**4th grade math**

Need help with this problem. Suppose you arrange 48 counters into groups. The first group has 3 counters. Each group after that has 2 more counters than the group before. How many groups do you need to make to use all 48 counters?
*Friday, March 7, 2014 at 2:47am*

**math**

Water is flowing at the rate of 15km/hr. Through a cylindrical pipe of radius 7cm into a rectangular tank which is 50m long and 44m wide.In how many hours will the water label in the tank raised by 21cm
*Friday, March 7, 2014 at 1:59am*

**Math**

Bob spends 3/8 of his pocket money on food and 1/3 of it on a present for his sister. What is the fraction of his pocket money remains? I need some help on this!
*Friday, March 7, 2014 at 12:42am*

**Math**

Shirley is on a Ferris wheel which spins at the rate of 3.6 revolutions per minute. The wheel has a radius of 35 feet, and the center of the wheel is 51 feet above the ground. After the wheel starts moving, Shirley takes 12 seconds to reach the top of the wheel. How high above...
*Friday, March 7, 2014 at 12:20am*

**math**

the levels of swimming pool in red from 4.5 to 6 feet. what is the percent increase in the water level rounded to the nearest tenth of a percent
*Friday, March 7, 2014 at 12:12am*

**Math**

kim has 4/10 of a dollar. Carla has 40/100 of a dollar. Who has more money? Explain Colin has 3 quarters. He says he has less than 8/10 of a dollar. is he correct? Explain.
*Thursday, March 6, 2014 at 11:07pm*

**MATH 12**

Canada's national debt fluctuates. It is affected by financial markets (such as stock, bond, currency, and commodity markets), the gross domestic product (the gross value of all goods and services produced in the country), and the federal budget (the federal government'...
*Thursday, March 6, 2014 at 11:04pm*

**math**

a recipe calls for 2 and 3/4 cups of milk. how many cups of milk written as a fraction greater than one are used in the recipe?
*Thursday, March 6, 2014 at 10:18pm*

**math**

Elaine room is 15 square units and each square unit represents 5 square feet what is the area of Elaine bedroom in square feet.is the answer 75 square feet
*Thursday, March 6, 2014 at 10:08pm*

**math**

my bedroom is 15 square unit and if each unit represents 5 square feet, what is the area in square feet
*Thursday, March 6, 2014 at 9:53pm*

**math**

Solving inequalities by multiplying or dividing (-y/6)<2 y___21 1. < 2. > please answer the y ? 21 1 or 2 and how to do it
*Thursday, March 6, 2014 at 9:52pm*

**math**

Isaac made a mistake in his checkbook. He wrote a check for $8.98 to rent a video game but mistakenly recorded it in his checkbook as an $8.98 deposit. Represent each transaction with a rational number, and explain the difference between the transactions.
*Thursday, March 6, 2014 at 9:23pm*

**Math**

Given l || m, m<9 = 9x + 5, and m<5 = x+ 37, find the value of x
*Thursday, March 6, 2014 at 9:20pm*

**Math ~ Check Answers ~**

Find the circumference of the circle (use 3.14 for pi). Show your work. Round to the nearest tenth. the radius is 23 yd My Answer: ???? •Circumference = (2) (3.14) (23) •3.14 x 2 x 23 = 144.44
*Thursday, March 6, 2014 at 8:48pm*

**Help me with this math ms sue.**

1. Find the lateral area of a cone with a radius of 7 ft. and a slant height of 13 ft. Use 3.14 for π and round to the nearest tenth. (1 point) 439.6 ft2 324.5 ft2 571.5 ft2 285.7 ft2 2. Find the surface area of a square pyramid with a base length of 24 cm and a height of...
*Thursday, March 6, 2014 at 8:48pm*

**math**

An archeitect is designing a rectangular fountain for the city park. It's area is represented by 16x-40. Factor this lengh and width measurements that fountain could have?
*Thursday, March 6, 2014 at 8:46pm*

**math**

Use any problem solving strategy to solve the following problem.The value of a house is expected to increase from its current value of $50,000 by 3%each year .What will the value of the house be after 3 years ?if you have $55,000 in 3 years ,will you have enough to buy the ...
*Thursday, March 6, 2014 at 8:26pm*

**Math**

What percent (as a mixed number fractions) corresponds to 2/3?
*Thursday, March 6, 2014 at 7:45pm*

**math**

HELP heres a math problem ; give me a formula for it please;;; a carpenter has several boards of equal length. he cuts 3/5 of each board.after cutting the boards , he notices that he has enough pieces left over to make up the same length as 4 of the origional boards. how many ...
*Thursday, March 6, 2014 at 7:17pm*

**MATH**

Find the circumference for the circle ( use 3.14 for pi ). Round to the nearest tenth. the circumference for the circle is 23 yd.
*Thursday, March 6, 2014 at 6:43pm*

**Math**

What is the least number that is both a multiple of 35 and a multiple of 20?
*Thursday, March 6, 2014 at 6:42pm*

**Math**

What is the common multiple (LCM) of 5, 6,and 2?
*Thursday, March 6, 2014 at 6:33pm*

**Math**

A golfer stands 420ft(140 yd) horizontally from the hole and 50ft above the hole. Assuming the ball is hit with an initial speed of 120ft/s, at what angle should it be hit to land in the hole? Assume the path of the ball lies in a plane.
*Thursday, March 6, 2014 at 6:31pm*

**math 2**

brittany has a gift box in the shape of a cube. each side of the box measures 15 centimeters. what is the volume of the gift box? is the answer 255, 1,250, 3,375, or 3,475 and how did you arrive at that answer
*Thursday, March 6, 2014 at 6:12pm*

**math 2**

max packs cereal boxes into a larger box the volume of each cereal box is 175 cubic inches. which is the best estimate for the volume of the large box? would the answer be it be 210 cubic inches, 420 cubic inches, 2,100 cubic inches, or 4,200 cubic inches?
*Thursday, March 6, 2014 at 6:09pm*

**math**

I need to show work on this but not sure how to do it. 39 divided (2+1)- 2x(4+1)
*Thursday, March 6, 2014 at 5:11pm*

**math**

henry was setting up 18 chairs he wanted to make rows so all of the chais would fit without any leftovers how does he do it????? MAIN QUESTION:HOW MANY ROWS WOULD THERE BE WITHOUT ANY LEFT OVER CHAIRS????????
*Thursday, March 6, 2014 at 5:10pm*

**math**

find the simple interest on $1200 at 8% for six months?
*Thursday, March 6, 2014 at 4:59pm*

**math**

find sale price of an item if it originally costs $16.95, is on sale for 22% off and sales tax is 6.5%?
*Thursday, March 6, 2014 at 4:56pm*

**Math**

I have 10 dozen potatoes which must be equally divided into 20 bags. How many potatoes will be in each bag?
*Thursday, March 6, 2014 at 4:30pm*

**Math**

A woman drove a distance of 100km/h, on the journey she drove 10km/h faster and took 30min less. What was her speed on the outward journey?
*Thursday, March 6, 2014 at 3:58pm*

**math**

Solve. (Enter your answers as a comma-separated list.) x2 − 8x + 15 = 0
*Thursday, March 6, 2014 at 3:45pm*

**Math**

What's 1 5 --------- + ---------- 3 6
*Thursday, March 6, 2014 at 3:44pm*

**math**

Prove that (n(top)sigma r=1(bottom))^2-(n-1(top)sigma r=1(bottom))^2 =n^3 general formula for both notation is r
*Thursday, March 6, 2014 at 3:38pm*

**Math**

Find the measure of the sides of an equilateral (triangle)PQR if PQ = 5x - 7 and PR = 2x + 5
*Thursday, March 6, 2014 at 3:11pm*

**Math**

Given m<10 = 5x + 2, and m<6 = 3x + 28, find the value of x so that l || m
*Thursday, March 6, 2014 at 3:00pm*

**Math Help**

I have to do this question in several ways like any possible way to do it so I've found one mathematical way, I can't do it like a physics question cause it's math. a bike travels at a constant speed of 10km/h. a bus starts 175 km behind the bike and catches up to ...
*Thursday, March 6, 2014 at 2:17pm*

**MAT-134 Math XL**

Factor out the greatest common factor. Simplify if possible. 9x^6-63x^5+36x^4=
*Thursday, March 6, 2014 at 2:14pm*

**Math 2 questions**

13. Name the quadrilateral with exactly one pair of parallel sides. kite parallelogram rhombus trapezoid 14. What is the sum of the interior angles for a pentagon? 900º 540º 720º 108º
*Thursday, March 6, 2014 at 12:34pm*

**math 100**

Solve, express your answer in interval notation absolute value of 3x-10 is > 2
*Thursday, March 6, 2014 at 12:31pm*

**Math 100**

On yur new job, you can be paid in one of two ways: Plan A;
*Thursday, March 6, 2014 at 12:28pm*

**math 100**

Find all numbers that twice the number is greatr than three time the number minus forty 2x>3x-40?
*Thursday, March 6, 2014 at 12:28pm*

**math 100**

a van can be rented for 50. per ay with unlimited mileage, or for 40 per day plus .25 cents per mile. for what daily mileage will the unlimited mileage plan save you money?
*Thursday, March 6, 2014 at 12:05pm*

**math**

If x is greater than 1 find the sum of infinity of x(squared)/x-1;x;(x-1).... And also the value of x for the given series (replace(;) with (add sign) please help
*Thursday, March 6, 2014 at 11:52am*

**math**

There are eight shelves. How many soup cans a grocery clerk stack if the bottom shelf has 21 cans and each additional shelf has 2 fewer soup cans than the previous shelf?
*Thursday, March 6, 2014 at 11:21am*

**Math help, anyone?**

11. Name the triangles that are classified by sides. right, scalene, isosceles scalene, isosceles, equilateral acute, right, obtuse obtuse, isosceles, acute
*Thursday, March 6, 2014 at 11:01am*

**Math**

A 6ft. person casts a 4ft. shadow. Next to the person, a lamppost casts a 30ft. shadow. How tall is the lamppost?
*Thursday, March 6, 2014 at 9:46am*

**math**

In an arithmetic series the 3rd term is twice the 8th term. Find the sum of the first 25 terms.
*Thursday, March 6, 2014 at 9:40am*

**Math**

If you put me into 7 equal groups with 3 in each group and 5 are left over, what number am I?
*Thursday, March 6, 2014 at 1:07am*

**math**

Mickey has 1/3 the number of books that Minnie does. If they had 1 less book between them, they would have 27 books. The question, of course, is how many books each has.
*Thursday, March 6, 2014 at 12:53am*

**Math**

The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells the dinners at an 80% markup based on cost. They decided to offer a $1.00-off ...
*Wednesday, March 5, 2014 at 11:50pm*

**Math**

If there are 6 red tiles and 5 blue tiles in a box, what are the chances that you will pick a red tile without looking?
*Wednesday, March 5, 2014 at 11:34pm*

**math**

Find the interest and total amount. 25. P=$8,500, R=6.5% per year, T= 1 year 26. P=$1,200, R=7% per year, T= 2 years 27. P=$2,400, R=11% per year, T= 6 months
*Wednesday, March 5, 2014 at 11:26pm*

**Math(check answer)**

A bag contains 9 green marbles and 11 white marbles. You select a marble at random. What are the odds in favor of picking a green marble? A. 9:20 B. 2:9 C. 11:9 D. 9:11 (I think its a.)
*Wednesday, March 5, 2014 at 11:07pm*

**MATH**

A circular oil spill is spreading over the surface of a lake. The circle’s radius grows by 500 meters every hour. How many square kilometers did the spill grow between 24 hours and 48 hours?
*Wednesday, March 5, 2014 at 11:02pm*

**math**

k-3/7k=-6/7 3.5+6.4x=x-3.4
*Wednesday, March 5, 2014 at 10:41pm*

**math**

find the cost of cementing a driveway that is 900 cm wide by 1600cm long by 3 cm thick. The price per cubic centimeter is $5.20.
*Wednesday, March 5, 2014 at 10:33pm*

**Math**

How many ways can 3 students be chosen from a class of 16 to represent their class at a banquet? A. 3,360 B. 1,680 C. 1,120 D. 560
*Wednesday, March 5, 2014 at 10:31pm*

**Math**

Two motorcycles travel toward each other from cities that are about 320km apart at rates of 95km/hr and 65km/hr. They started at the same time . In how many hours will they meet?
*Wednesday, March 5, 2014 at 10:29pm*

**Math**

The probability of a certain hockey player making a goal after hitting a slap shot is 1/5. How many successful slap shots would you expect her to make after 120 attempts? A.5 B.20 C.24 D.60
*Wednesday, March 5, 2014 at 10:20pm*

**Math**

A basket contains the following pieces of fruit: 3 apples, 2 oranges, 2 bananas, 2 pears, and 5 peaches. Jack picks a fruit at random and does not replace it. Then Bethany picks a fruit at random. What is the probability that Jack gets a peach and Bethany gets an orange? A. 10...
*Wednesday, March 5, 2014 at 10:06pm*

**Math**

A basket contains the following pieces of fruit: 3 apples, 2 oranges, 2 bananas, 2 pears, and 5 peaches. Jack picks a fruit at random and does not replace it. Then Bethany picks a fruit at random. What is the probability that Jack gets a peach and Bethany gets an orange? A. 10...
*Wednesday, March 5, 2014 at 10:06pm*

**Math**

How is this trinomial prime? 5x^2+x-2
*Wednesday, March 5, 2014 at 9:59pm*

**Math**

A train leaves a station and travels north at a speed of 45mph. Four hours later, a second train leaves on a parallel track and travels north at 105 mph. How far from the station will they meet? The trains will meet ________ miles away from the station
*Wednesday, March 5, 2014 at 9:56pm*

**math**

Write an inequality to solve each problem.Then solve the inequality. 1. Marcus wants to buy baseballs.He has $35. What is the most each baseball can cost? 2. Melinda charges $4 per hour for babysitting. Mrs. Garden does not want to spend more than $25 for babysitting. What is ...
*Wednesday, March 5, 2014 at 9:51pm*

**Math**

You have six $1 bills, eight $5 bills, two $10 bills, and four $20 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, March 5, 2014 at 9:51pm*

**Math**

Give the exact and approximatel solutions to three decimal places. X^2-7x+7=0
*Wednesday, March 5, 2014 at 9:30pm*

**math**

-n+8n=35 4x-7-7x=-1 -22+3k+6=-28 -2(m+7)=-22 m+3(m-4)=16 2z-4(9-3z)=62 2b+8/5=-12 g+4/7=6 9-3h/5=-6 4m-16/12=-3
*Wednesday, March 5, 2014 at 9:14pm*

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