1,469 Answered Questions for the topic Math Problem

04/18/16

Please help with the question below (combinations and permutations)
A club has 30 members under the age of 30 and 40 members who are 30 or older. In how many ways can a slate of officers be chosen if the President and atleast one other officer must be at least 30... more
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Math Problem

04/18/16

How do I write a polynomial of least degree?
1. 4,5 2. 3,-5, 1 3. 3, 3, 1, 1, -2 4. 2i, 3, -3 5. 1-2i, 3
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04/17/16

What volume of blood passes along the artery in one second?
An artery has a circular cross section of radius 3 millimeters. The speed at which blood flows along the artery fluctuates as the heart beats. The speed after t seconds is 20+5sin(2πt) meters per... more
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04/16/16

How quickly is the mass of the tree increasing?
A tree trunk is approximated by a circular cylinder of height 50 meters and diameter 3 meters. The tree is growing taller at a rate of 4 meters per year and the diameter is increasing at a rate of... more
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Math Problem

04/15/16

Acres of Pizzas (pizzas are round)
Acres of Pizzas (pizzas are round)It is estimated that Americans eat 100 acres worth of pizza a day. Assume that they are large pizzas with a diameter of 14 inches.Find the number of square inches... more
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Math Problem Discrete Math

04/12/16

prove that for every n?N , ( 2n choose n) is even
Any help would be greatly appreciated. Thanks!
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04/12/16

prove that for every n belongs to N..... PLEASE HELP WITH THE PROBLEM BELOW
prove that for every n∈N , ( 2n choose n) is even
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Math Problem Math Algebra Algebra Help

04/10/16

Help please
According to a study, each week the average elementary child spends 17 hours watching television, 2 hours reading books, and 10 hours playing outside. What is the ratio of number of hours of... more
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04/10/16

Help please
At a gourmet nut shop, nuts are sold in bulk. Cashews sell for $1.30 per pound and macadamia nuts sell for $8.45 per pound. Lee wishes to purchase 5 pounds of mixed nuts by mixing 3.5 pounds of... more
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Math Problem Math Word Problem

04/10/16

One integer is 3 times another. The product is 4 more than their sum. Find the two integers.
One integer is 3 times another. The product is 4 more than their sum. Find the two integers.
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04/08/16

Is Bob's method for determining the area of the irregular shape valid or not?
Bob wants to find the area of an irregular shape. He cuts a piece of string to the length of the perimeter of the shape. He measures to see that the string is about 60 cm long. Bob then forms his... more
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Math Problem

04/08/16

Write expression using 2,3,5 and 8 with any combination of +,_,.,() for value of 104
Combination of 2,3,5, 8 any combination of +,_,() to write and experession or value of 104
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Math Problem Discrete Math

04/07/16

Suppose A is a set and B is a set. Given that |AUB|=50;|A`B|=20 and |B`A|=15, find that |A| and |B|
Suppose A is a set and B is a set. Given that |AυB|=50;|A`B|=20 and |B`A|=15, find |A| and |B|   "`" is the closest symbole I could find for set subtraction.   PLEASE HELP ME!
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04/07/16

Find the integral?
How to integrate e^(-2x)/[1+e^(-x)] dx?   Please show all your work. Thanks.
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Math Problem Discrete Math

04/07/16

how many elements are in the set ...
how many elements are in the set {(x,y)∈ AxA|x+y is even} if A={1,2,3,4,5}. Please explain all steps. Thank You!!
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Math Problem Math Maths Math Help

04/07/16

Maths Vectors Question
Show that, for all vectors, u and v, |u x v|^2 = |u|2|v|2 - |u.v|2
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Math Problem Algebra Division Math Help

04/05/16

Help with division of polynomials pleaseee
I have to write the polynomials in descending orden when dividing.   27-x-14x3+4x4 / x-3       My answer is 4x3-2x2-6x+17+78/x-3 .I am not sure if that is the right answer. Help pelase! 
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04/05/16

math question
Jaime has 29 coins. Some are dimes and some are quarters. If the coins are worth $5.30, how many are dimes?
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Math Problem Discrete Math Proof

04/05/16

please help wit the problem below
Prove by induction that every n∈N, (1+√3)n+(1-√3)∈Z. I have an exam tonight and this was one of the practice problems I do not understand. PLEASE HELP! Thank you
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Math Problem

04/02/16

if the perimeter of a sq is 1 meter, what is the area of the sq in sq cm?
premeter=1meter to area in sq cm
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03/29/16

If I pay $0.05 for 1 megabyte of data, how much data have I used if I have to pay $30.00
I need help figuring out how much extra data I have used this billing period (this info is only my extra data, not my regular data)
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Math Problem Math

03/28/16

Math Problem
James counts the hair colors of the 22 people in his class, including himself. He finds that there are 4 people with blonde hair, 8 people with brown hair, and 10 people with black hair. What is... more
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Math Problem

03/26/16

If 9 were subtracted from three times a number, the result would be the same as if 4 were added to twice the number. What is the number?
 This is a problem I need this answer right now!
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03/25/16

how can is happen that three different animals could be claimed largest?
Describe how it could happen that three different animals could each be claimed -rightfully- to be the largest of the three. Discuss the implications of this kind of situation for teaching students... more
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Math Problem

03/25/16

how much will be ina an account at the end of 8 years if 7000 is deposited at 6% interest compunded 4 times per year?
 How much will be in an account at the end of 8 years i 7000 is deposited at 6% interest compounded 4 times per year?
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