Tuesday

October 21, 2014

October 21, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

Calvin is organizing a dinner party for a group of friends. He has prepared 45 chicken dumplings and 75 shrimp wantons. He manages to split the chicken dumplings and shrimp wantons evenly amongst everyone, so that everyone got the same number of chicken dumplings as each other...
*Thursday, May 16, 2013 at 2:55pm*

**math**

What percentage of the first 100 positive integers contains no even digits?
*Thursday, May 16, 2013 at 2:38pm*

**math**

if the radius is32 inch what is the diameter
*Thursday, May 16, 2013 at 2:28pm*

**math**

you invest $4000 in an account that pays simple interest of 6% for 30 years. calculate the amount of money you'll have at the end of the indicated time period.
*Thursday, May 16, 2013 at 2:20pm*

**Math is this right?**

The temperaturestayed above - 15. x + > = -15 Right?
*Thursday, May 16, 2013 at 2:07pm*

**math**

What is the portion if the base is 900 and the rate is 12 3/4
*Thursday, May 16, 2013 at 1:59pm*

**math subtraction**

I keep having trouble finding o subtract or add. I have tried everything. Function Input Output -3 -2 -4 -1 0 1 -1 Anyone help?
*Thursday, May 16, 2013 at 1:53pm*

**math help plesase????**

A person who weighs 130 pounds can burn about 300 calories per hour skateboarding. Write a function that relates the calories burned, c, to the number of hours, h, spent skateboarding. Identify the independent and dependent variable. Create a function table for values of h ...
*Thursday, May 16, 2013 at 1:23pm*

**math**

Ralph, Mario, Jack, Laura, and Maria are in the math club. The club advisor will assign students to 3-person teams at the next math team competition. How many different 3-person teams can be formed from these five students? would this be 10, because of 5 * 4 * 3 / 3 * 2 * 1?
*Thursday, May 16, 2013 at 1:14pm*

**math**

Thirty people are eligible to win cash prizes. The number of each cash award prize is shown in the table. Prizes will be given out randomly one at a time. What is the probability of the first person winning the $50 prize?
*Thursday, May 16, 2013 at 12:53pm*

**Math **

1- 75 is what percent of 500? 2- 30% of 30 is wat #? 3- 90% of wat num is 207?
*Thursday, May 16, 2013 at 12:51pm*

**Math**

What is the maximum integer value of n, where n<148, that satisfies the following inequalities: sin(pi/2+(pi*n)/74)<0 and tan(pi−(pi*n)/74)<0?
*Thursday, May 16, 2013 at 11:26am*

**Math**

Let f(x)=cos(pi*x/3) g(x)=1^x+(−1)^x h(x)=f(x)⋅g(x) where x is a positive integer. Given that h(x) has a range of exactly 3 different values: a, b and c, what is the value of a^2+b^2+c^2?
*Thursday, May 16, 2013 at 11:25am*

**math**

You are going to roll two dice. Let the variable x = the sum of the numbers rolled. What is the probability that x = 9?
*Thursday, May 16, 2013 at 11:16am*

**Math 222**

solve the function n(x)=|-2x|
*Thursday, May 16, 2013 at 11:08am*

**math**

I need to find the A small b, C small b, slant height, and surface area of a cone. The height is 9.2 and radius is 5.6. Please help
*Thursday, May 16, 2013 at 10:44am*

**math**

The Transamerica Pyramid in San Francisco is shaped like a square pyramid. It has a slant height of 856.1 feet and each side of its base is 145 feet. Find the lateral area of the building.
*Thursday, May 16, 2013 at 10:41am*

**Math**

A mixture of petrol and oil for a two stroke lawn mower contains 85% petrol, how much oil is required for 18 litres of the fuel mixture?
*Thursday, May 16, 2013 at 9:25am*

**heeelp MATH**

ABC is a triangle with a right angle at A.M and N are points on BC such that AM is the altitude, and AN is the angle bisector of ∠BAC. If CN/NB=21,what is CM/MB?
*Thursday, May 16, 2013 at 8:26am*

**Math **

What percent of runners completed the time trial between 52.0and 53.9 seconds?
*Thursday, May 16, 2013 at 7:40am*

**math vocab?**

what is math vocab? The types of units that are used to measure the perimeter of an object thanks
*Thursday, May 16, 2013 at 7:20am*

**Math (Geometry)**

ABC is a triangle with a right angle at A. M and N are points on BC such that AM is the altitude, and AN is the angle bisector of ∠BAC. If CN/NB=21, what is CM/MB?
*Thursday, May 16, 2013 at 1:47am*

**biz math**

what is the portion if the base is 900 and the rate is 12 3/4?
*Thursday, May 16, 2013 at 1:24am*

**math**

5. A bus on a regular schedule takes 3 1/4 hours to reach its destination. The express bus takes 2 1/2 hours to make the same trip. How much travel time can be saved by taking the express? A. 1 1/4 hours B. 3/4 hour C. 2 hours D. 5 3/4 hours it C right?
*Thursday, May 16, 2013 at 12:02am*

**MATH**

7. Tina lost 3 pounds on the first week of her diet. She gained a pound on the second week, and then lost 2 pounds a week during every week afterwards. She has been dieting for a total of 13 weeks. How many pounds has Tina lost in all? A. 26 pounds B. 24 pounds C. 22 pounds D...
*Wednesday, May 15, 2013 at 11:49pm*

**math**

a jar contains two red and five yellow marbles. A marble is drawn at random and then replaced. A second draw is made at random. find the probability that both marbles are red?
*Wednesday, May 15, 2013 at 11:14pm*

**Math**

Determine the last three digits of 10,000,000 ‡” (n^7+n^5 ) n=2
*Wednesday, May 15, 2013 at 11:09pm*

**math**

Is 0·50 the same as1/2
*Wednesday, May 15, 2013 at 10:49pm*

**math**

Kris wants to order a personalized license plate for her car. The plate is to have the 4 letters KRIS followed by any two digits. Part A: How many different ways can the two digits be arranged? Part B: Suppose the plate has KRIS followed by two additional digits. How many ...
*Wednesday, May 15, 2013 at 10:39pm*

**math**

Simplify positive exponents 2n.(3n)
*Wednesday, May 15, 2013 at 10:16pm*

**Math**

Winnie can use up to 10 coupons when buying a box of DVDs. Each coupon is worth $3. She bought a box of DVDs for $56 less the value of her coupons. a)choose a variable to represent the number of coupons. b)Write an Algebraic expression that describes the amount Winnie paid for...
*Wednesday, May 15, 2013 at 9:58pm*

**Math**

Danski brother farms planted 370 rows of tulips.each row was 20 meters long. What is the total length of the rows? Write your answer in kilometers.
*Wednesday, May 15, 2013 at 9:36pm*

**math**

If a number increases from 47 to 70.5 what is the rate of increase?
*Wednesday, May 15, 2013 at 9:12pm*

**math**

What is 7,000 decreased by 62%?
*Wednesday, May 15, 2013 at 9:10pm*

**math**

Explain how to factor 5x^2 - 125.
*Wednesday, May 15, 2013 at 9:05pm*

**math**

what is the rule of the input output table input 2 output 11 input 3 output 15 input 5 output 18 input 8 output? what is the rule?
*Wednesday, May 15, 2013 at 8:06pm*

**Math 7th grade**

I have a question on math if I start to look for a object hidden by making the center of a field as (0,0), with coordinates giving distances in yards. Coordinates to the north or east are positive and coordinates to the south or west are negative. And I find nothing at (-12,8...
*Wednesday, May 15, 2013 at 7:15pm*

**Math**

A team has won 50% of the 60 games it played, find the number of games the team must win in succession to increase its winning percentage to 60%?
*Wednesday, May 15, 2013 at 6:49pm*

**Math**

When constructing a cumulative histogram do you use the frequency or cumulative frequency
*Wednesday, May 15, 2013 at 6:10pm*

**Math**

When the queen counted her jewels, she found that she had five pearls for each diamond, two opals and three rubies for each diamond, and two emeralds for each opal. If she has three diamonds, how many jewels does she have altogether?
*Wednesday, May 15, 2013 at 6:03pm*

**math**

What do you notice about lines of symetry in regular polygons?
*Wednesday, May 15, 2013 at 5:24pm*

**Math**

It is 3 miles from Sally's home to school. How many feet is that?
*Wednesday, May 15, 2013 at 4:52pm*

**math**

Draw and label a rectangle that has an area of 18 square units? . How much is that in width and length.
*Wednesday, May 15, 2013 at 4:23pm*

**math**

write each decimal as a mixed number.5.25 and 9.12 WAS never taught this. Thank you
*Wednesday, May 15, 2013 at 4:18pm*

**math**

write each mixed number as a decimal.3 and seven tenths. 4 and one half how??
*Wednesday, May 15, 2013 at 4:07pm*

**math**

Amanda bought a car for $8,500. Her loan was for five years at a 4.6% interest rate. How much will Amanda pay for her car total, including interest?
*Wednesday, May 15, 2013 at 4:01pm*

**math**

Find the surface area of a cone with diameter 27 m and slant height 19 m. Leave your answer in terms of . Note: You do not need to include in your answer
*Wednesday, May 15, 2013 at 3:04pm*

**math**

The Transamerica Pyramid in San Francisco is shaped like a square pyramid. It has a slant height of 856.1 feet and each side of its base is 145 feet
*Wednesday, May 15, 2013 at 3:03pm*

**math(galerkin,collocation)**

can some one plz help how to make trial function for solving equations in collocation and galerkin methods which satisfy the given boundary conditions. example y"+y=3*square(x) with y(0)=0 and y(2)=3.5. is there some method of making trial func or we have to make it ...
*Wednesday, May 15, 2013 at 2:27pm*

**math**

What is the portion if the base is 900 and the rate is 12¾ %
*Wednesday, May 15, 2013 at 10:42am*

**math**

Michael Reeves, an ice cream vendor, pays $17.50 for a five-gallon container of premium ice cream. From this quantity he sells 80 scoops at $0.90 per scoop. If he sold smaller scoops, he could sell 98 scoops from the same container; however, he could charge only $0.80 per ...
*Wednesday, May 15, 2013 at 10:38am*

**Math (Geometry)**

ABC is a triangle with a right angle at A. M and N are points on BC such that AM is the altitude, and AN is the angle bisector of ∠BAC. If CN/NB=21, what is CM/MB?
*Wednesday, May 15, 2013 at 5:36am*

**Math (Geometry)**

A point P is given outside of a circle Γ. A tangent from P to Γ touches Γ at T with PT=45. A line from P cuts Γ at the 2 points A,B. If PA=25, what is the length of PB?
*Wednesday, May 15, 2013 at 5:31am*

**Math (Geometry)**

ABCD is a parallelogram with side lengths AB=15,BC=10 and ∠ADC=75∘. A point P in the interior of the parallelogram is chosen such that ∠APD+∠CPB=180∘. What is the measure (in degrees) of ∠PAD+∠PCB?
*Wednesday, May 15, 2013 at 5:30am*

**Math (Probability)**

When Lino submitted an essay for his English class, it was 9 pages long. Lino's essay had errors on pages 2 and 7. If the teacher chose 3 pages uniformly at random to read, then the probability that she didn't read any of the pages with errors can be expressed as a/b ...
*Wednesday, May 15, 2013 at 5:28am*

**English**

Talk about the things you don't have to do on Sunday. I don't have to study hard. I don't have to see teachers at school. I don't have to see my homeroom teacher. I don't have to walk to school. I don't have to clean my classroom. I don't have to ...
*Wednesday, May 15, 2013 at 4:45am*

**math**

The probability that a positive divisor of 60 is greater than 9 can be written as a/b, where a and b are coprime positive integers. What is the value of a+b?
*Wednesday, May 15, 2013 at 4:16am*

**math**

Ariel makes a sandwich using four kinds of Italian lunch meat: A, B, C and D and two kinds of Italian cheese: X and Z. Ariel's sandwich has a single layer of each type of meat and a single layer of each kind of cheese, but he also wants to make sure that the two types of ...
*Wednesday, May 15, 2013 at 4:09am*

**Math**

ted sells his homemade peanut butter for 1.60 a jar at the local farmers Market the jar is 8 cm in diameter and 10 cm high he decides he will also sell peanut butter in jats that are 16 cm in diameter and 20 cm high.What should he charge if he uses the same price per cubic ...
*Wednesday, May 15, 2013 at 1:30am*

**Math**

a manufacturer makes right triangular prisms like the one shown for refracting light. They will be packed in boxes 12.5 cm long, 2.5 cm wide and 22.5 cm high. How many prisms can fit the box?
*Wednesday, May 15, 2013 at 1:23am*

**Math**

a manufacturer makes right triangular prisms like the one shown for refracting light. They will be packed in boxes 12.5 cm long, 2.5 cm wide and 22.5 cm high. How many prisms can fit the box?
*Wednesday, May 15, 2013 at 1:22am*

**Math**

a rectaguler tub with dimesions 2m x 1m x 0.5 is filled with water using a pail of radius 0.1m and height 0.35. How many pails of water will be required? give yor answer to the nearest pail.
*Wednesday, May 15, 2013 at 1:14am*

**Math**

A=hb/2 solve for b
*Wednesday, May 15, 2013 at 1:11am*

**Math Growth & Decay**

a) A growth factor of 1.22 corresponds to a rate of? b)a growth rate of 6.7% corresponds to a growth factor of? c)a decay factor pf 0.972 corresponds to a decay rate of? d)A decay rate of 12.3% corresponds to a decay factor of?
*Wednesday, May 15, 2013 at 1:05am*

**math analysis/ precalc**

Assume the annual number of skin cancer deaths increases geometrically, instead of arithmetically. Use the same starting number of 9,300 in 2000 and 200,000 in 2050. Select the number closest to the ratio of number of deaths from year to year. A. 1.0655 B. 1.3259 C. 1.0633
*Wednesday, May 15, 2013 at 12:24am*

**math analysis/ precalc**

Assume the annual number of skin cancer deaths increases geometrically, instead of arithmetically. Use the same starting number of 9,300 in 2000 and 200,000 in 2050. Select the number closest to the ratio of number of deaths from year to year.
*Wednesday, May 15, 2013 at 12:22am*

**Math**

How do I identify the initial value and the growth or decay for these problems? a) Q=25000 x (1/2)^t b) y=350 x 5* c) N=5000 x (9/10)^t
*Wednesday, May 15, 2013 at 12:11am*

**Math**

Let S be the set of {(1,1),(1,−1),(−1,1)}-lattice path which begin at (1,1), do not use the same vertex twice, and never touch either the x-axis or the y-axis. Determine the largest value of n such that every path in S which ends at (n,n) has length at most ...
*Tuesday, May 14, 2013 at 11:51pm*

**math**

How many positive integers n are there such that 10^n≤n^10?
*Tuesday, May 14, 2013 at 11:34pm*

**Math**

The sum of two numbers is twice their difference. The larger number is 6 more than twice the smaller. Find the two numbers.
*Tuesday, May 14, 2013 at 11:22pm*

**Math**

A wheel on Greg's bicycle is 0.3 m in diameter. Greg races the bicycle for 31 m. How many times does the wheel turn as the bicycle travels this distance?
*Tuesday, May 14, 2013 at 10:26pm*

**math help**

How do I write this in inequality? The value of r is at most 10 and would it be an open or closed on the number line? I think open?
*Tuesday, May 14, 2013 at 10:03pm*

**math**

how to describe a model that represents 3/3x4/4?
*Tuesday, May 14, 2013 at 9:53pm*

**Math**

What is 4963rounded to the nearest hundred?
*Tuesday, May 14, 2013 at 9:52pm*

**math**

0.2(x+30)-0.03(x-40)=17.4
*Tuesday, May 14, 2013 at 9:46pm*

**math**

what is the percent in the form specified of 48%ratio,1%decimal,99%fraction
*Tuesday, May 14, 2013 at 9:43pm*

**Math**

A bullet reaches a speed of 900 ft per sec in .2 sec. What is its acceleration.
*Tuesday, May 14, 2013 at 9:39pm*

**math**

You and a friend are biking in opposite directions starting from the same point. You travel 108 feet every 8 seconds. Your friend travels 63 feet every 6 seconds. How far apart are you and your friend after 15 minutes?
*Tuesday, May 14, 2013 at 8:58pm*

**7th Grade Math ~Multiplying Polynomials**

1. (2x)(10x) (1point) 20x 12x 20x^2** 5x 2. -3m(m+8) (1point) -3m^2+24 -3m^2-24m** -24m^2 -4m+5 3. 4d(2d-9) (1point) 8d-36d -d -28d^2** 8d^2-36d 4. 5b(6b-10) 11b-10 5b^2+6b-10 -b-10 30b^2-50b** Are these right
*Tuesday, May 14, 2013 at 8:56pm*

**4th grade math**

Hi! This question says Joe is thinking of o function machine.He says that the output is 12 if the input is 4.what are 2 rules that he could be thinking of for his function machine?( I would really be grateful if you helped me) ;)thanks
*Tuesday, May 14, 2013 at 8:37pm*

**7th grade math**

Horses, pigs and cows is really easy I can do it in my head but, my teacher told me I would have to start showing my work. I really have no clue how to do that I have always done it in my head. Can you pretty please help me I would gladly appreciate it. Thank you. :)
*Tuesday, May 14, 2013 at 8:13pm*

**math**

-10i(5+8i)
*Tuesday, May 14, 2013 at 8:12pm*

**math**

Assume you want to accumulate $125,000 for a long-range goal in 40 years. You have two choices. Plan A is an account with annual compounding and an APR of 5%. Plan B is an account with continuous compounding and an APR of 4.5%. How much of an investment does each plan require ...
*Tuesday, May 14, 2013 at 7:22pm*

**math**

You deposit $1200 in an account that pays an APR of 7% compounded monthly. How long will it take for your balance to reach $150,000?
*Tuesday, May 14, 2013 at 7:22pm*

**math**

A rectangular flower garden is surrounded by a grass border. the grass border is 5 meters wide on all sides of the flower garden and the outer dimensions are 50 meters by 40 meters. Determine the area of the grass border and show how you got this answer
*Tuesday, May 14, 2013 at 7:16pm*

**math**

Five friends went to a baseball game. Three of the friends each bought tickets for x dollars and a soda for $6.00. The other two friends each bought only tickets. Write and simplify an expression that represents the amount of money spent.
*Tuesday, May 14, 2013 at 7:04pm*

**math**

What is the portion if the base is 900 and the rate is 12 3/4?
*Tuesday, May 14, 2013 at 6:35pm*

**Math~Reiny Could you help with this question?**

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. Plz help it's urgent.
*Tuesday, May 14, 2013 at 6:29pm*

**7th grade math**

How does functions in math relate to what you put into it is what you get out of it? Can you explain for me? i'm thinking it doesn't really? one example if you can like in sports or goverment? Don't know.
*Tuesday, May 14, 2013 at 6:26pm*

**math**

the surface area of a prism with base 25mm by 35 mm and the height at 50 mm
*Tuesday, May 14, 2013 at 6:02pm*

**math **

tom bought 3 pieces of bubble gum for 12 cents total, if tom paid with a quarter how much change was left after the purchase
*Tuesday, May 14, 2013 at 5:58pm*

**math**

What is 4 x (8 + m)?
*Tuesday, May 14, 2013 at 5:53pm*

**math**

one-half of a number is 8 less than two-thirds of the number. write algebraic equation: the sum of x and 8 is 15 write algebraic equation: 4 more than x is 9 write algebraic equation: 5 less than twice x is equal to 35 write algebraic equation: the product of 10 and x is the ...
*Tuesday, May 14, 2013 at 5:50pm*

**MATH **

1. Add or Subtract. (4x^2+15x-3)-(-3x^2+5)
*Tuesday, May 14, 2013 at 5:45pm*

**math**

Rewrite this expression using the distributive property. 4 x (8 + m)
*Tuesday, May 14, 2013 at 5:43pm*

**Math**

25. Edith earns an annual gross salary of $17,500. She has 28% of her gross salary withheld for taxes and other deductions. What is the net pay of each paycheck if she is paid weekly? $274.04 $43.87 $242.31 26. Franklin deposited $1,400 in a savings account that accrues simple...
*Tuesday, May 14, 2013 at 5:41pm*

**2 math**

write algebraic equation for -36 equals q increased by 9.
*Tuesday, May 14, 2013 at 5:40pm*

**math**

write the algebraic equation for "after 7 is added to a number, the sum is divided by 4 and the result is 12"
*Tuesday, May 14, 2013 at 5:39pm*

**math**

What is The ratio of w's to consonants in this sentence? Wes and Willow went walking.
*Tuesday, May 14, 2013 at 5:33pm*

**math **

a 10-foot ladder is placed against the side of a building as shown i figure i below.the bottom of the ladder is 8 feet from the base of the building .in the order to increase the reach of the ladder against the building ,it is moved 4 feet closer to the base the bulding shown ...
*Tuesday, May 14, 2013 at 5:29pm*

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