364 Answered Questions for the topic College Math

11/02/16

Math homework help
Suppose J varies jointly with G and V, and J=3 when g=4 and V=3   Find J when G=10 and V=9   J=
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College Math Aplication

11/02/16

If a certain number is added to the numerator and denominator of 7 /9 , the result is 7 /8 . Find the number.
An application question If a certain number is added to the numerator and denominator of 7/9, the result is 7/8. Find the number.
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College Math Math Calculus Trigonometry

10/27/16

Find the derivative of cos(sqrtx)^3
I am not sure how to do this. So far I did Cos(x^(1/2)^3 So I did the chain rule to make Cos(u) where u = x^(3/2) Then I got -Sin(sqrtx)^3*(3/2)x^(1/2) Which then simplifies to... more
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College Math

10/25/16

I need to know how to work this problem
A company wants to mix peanuts, which contain 25% protein, and cashews, which contain 10% protein, to make a trail mix. If you make a mixture of 10 pounds of peanuts and 60 pounds of cashews, how... more
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College Math Math Calculus Math Help

10/21/16

How do I solve d/dx e^(2x)(x^2 + 5^x)?
I believe I am supposed to use the chain rule? I am still new to the concept so please, step by step how would I solve this?
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College Math Math Chemistry

10/21/16

Please Help!!! I don't understand Stoichiometry
Using the following equation how many grams of water do you get from 635.2g of glucose:C6H12O6 + 6O2 → 6CO2 + 6H2O + energy   Give answer as #unit space name
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College Math Math Chemistry

10/21/16

Chemistry Help..
Consider the unbalanced reaction NiS2(s) + O2(g) --> NiO(s) + SO2(g)When 11.2 g of NiS2 react with 5.43 g of O2, 4.86 g of NiO are obtained. The theoretical yield of NiO is 1._______ ,the... more
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10/16/16

Statistics Question
Type | Probability 1 ton | 0.25 2 tons | 0.06 5 tons | 0.01 10 tons | 0.11 20 tons | 0.57     An appliance dealer sells 5 types of air conditioners. The above gives the distribution of the... more
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College Math Math Probability College

10/11/16

combinatorics and probability
A committee of 6 people is chosen from 8 women and 8 men. How many different committees are possible that consists of 3 women and 3  men ?
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10/11/16

Permutations and Combinations
A student downloaded 5 MUSIC FILES to a portable MP3 player. In how many different orders can the songs be played? 
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10/11/16

combinatorics and probability
SEVEN DISTINCT POINTS ARE DRAWN ON A CIRCLE. HOW MANY DIFFERENT TRIANGLES CAN BE DRAWN IN WHICH EACH VERTEX OF THE TRIANGLE IS AT 1 OF THE 7 POINTS?
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College Math Logic Word Problems College

10/11/16

combinatorics and probability
A math quiz is generated by randomly choosing 5 questions from a test bank consisting of 50 questions. How many different quizzes are possible ? 
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10/04/16

Simple Stats Questions But Confused Need Help Soon *TRYING TO MAKE SICK DAD PROUD*
A survey is conducted to see which gender is more likely to shop online. Amongthe 1000 people selected, 60% of females shop online, 40% of males shop online, and 55% arefemales.1. What is the... more
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10/04/16

STATS POP DISTRIBUTION QUESTION
When the population distribution is ??(368, 152) and the sample size is n=25, find a symmetric interval around µ that will include 95% of the sample means.   PLEASE SHOW HELP WITH STEPS
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10/04/16

STATS HARD QUESTIONS NEED HELP
If the lifetime length of light bulbs from a certain factory follows a normal distribution with mean 2500 hours and standard deviation 50 hours. 1. What is the percentage of light bulbs that can... more
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College Math

09/30/16

The safe load, L, of a wooden beam supported at both ends varies jointly as the width, w, the square of the depth, d, and inversely as the length, l. A wooden
The safe load, L, of a wooden beam supported at both ends varies jointly as the width, w, the square of the depth, d, and inversely as the length, l. A wooden beam 6 in. wide, 5 in. deep, and 12 ft... more
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College Math

09/30/16

The distance that a free falling object falls is directly proportional to the square of the time it falls (before it hits the ground). If an object fell 45 ft
The distance that a free falling object falls is directly proportional to the square of the time it falls (before it hits the ground). If an object fell 45 ft in 7 seconds, how far will it have... more
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College Math

09/30/16

The gravitational force, F, between an object and the Earth is inversely proportional to the square of the distance from the object to the center of the Earth.
The gravitational force, F, between an object and the Earth is inversely proportional to the square of the distance from the object to the center of the Earth. If an astronaut weighs 202 pounds on... more
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09/30/16

Please Help W/ Chemistry Question!
Consider the reaction of hydrogen and oxygen producing water. If 24.6 g of water is produced and 2.9 g of hydrogen is used, how many g of oxygen are needed?   Is it 27.5? Or am I wrong and... more
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College Math Math Trigonometry Math Help

09/29/16

Solve sin2x+cos2x=sqrt(2) on the interval [0,2p)
I've been stumped on this problem... Step-by-step please :)
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College Math Statistics Probability

09/26/16

two events
For two? events, M and? N, ?P(M)=0.4, ?P(N|M)=0.2?, and ?P(N|M')=0.7. Find ?P(M'?|N?).
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09/26/16

Probability
A building contractor buys 60?% of his cement from supplier A and 40?% from supplier B. A total of 75?% of the bags from A arrive? undamaged, while 90?% of the bags from B arrive undamaged. Find... more
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09/14/16

In 1999 there were 4076 J.C. Penney stores and in 2010 there were 1106 stores.
Write a linear equation that gives the number of stores in terms of the year. Let t= 9 represent 1999. Then predict the numbers of stores for the years 2016 and 2018. Are your answers reasonable?... more
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09/06/16

Stone thrown vertically up at a velocity of 36ft per sec from a bridge 61ft above level water.
H=-16t"2"+36t+61   A)Draw a picture B)Find the time when the stone is again 61 feet above the water.  C) find the time when the stone strikes the water. (Show answer reduced to lowest term,... more
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09/05/16

Word problem
15 ml of Tylenol3 to be given every 4 – 6 hours. Your research indicates thatthere are 12 mg codeine per 5 ml of liquid and that the safe dosage is between0.5 and 1 mg/kg/dose every 4 – 6 hours. Is... more
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