Thursday

January 19, 2017
Total # Posts: 19

**math**

A can of soda at 80°F is placed in a refrigerator that maintains a constant temperature of 37°F. The temperature T of the soda t minutes after it is placed in the refrigerator is given by T(t) = 37 + 43e−0.058t.

*February 25, 2014*

**Science**

hardy weinberg problem

*April 7, 2013*

**Science**

Phenylketonuria (PKU) is a human metabolic disease caused by the recessive allele k. If 2 heterozygous carriers of the allele marry and plan a family of five children: a) what is the chance that all their children will be unaffected? b) what is the chance that four children ...

*April 7, 2013*

**maths**

The lines x=4y−a and y=4x−b intersect at the point (1,2). What is a+b?

*February 27, 2013*

**maths**

Three circles, each with a radius of 10, are mutually tangent to each other. The area enclosed by the three circles can be written as a√b−cπ, where a, b and c are positive integers, and b is not divisible by a square of a prime. What is the value of a+b+c?

*February 13, 2013*

**maths**

It is given that sin(θ)=1/√15. In addition, a and b are coprime positive integers such that cos(2θ)=a/b. What is the value of a+b?

*February 13, 2013*

**maths**

How many positive integers N are there such that the least common multiple of N and 1000 is 1000?

*February 13, 2013*

**maths**

A group of friends are planning a road trip. If they all contributed $24, then they would be $6 short of the total. If they all contributed $25, then they would have $3 more than needed. What is the total cost of the trip?

*February 13, 2013*

**maths**

The variables x and y satisfy the equations 2/x−24/y=−1 and 6/x+33/y=2. Find the product xy.

*February 13, 2013*

**Math**

If it costs $75 to install 40 feet of fencing, how much does it cost to fence a rectangular garden that measures 12 feet by 16 feet?

*September 24, 2012*

**calculus**

find the integral: ∫tan^6 (x) dx

*June 24, 2012*

**calculus**

∫ sin(x)sin(3x)dx find the integral

*June 14, 2012*

**calculus**

Find Mx, My, and (x, y) for the laminas of uniform density Ï bounded by the graphs of the equations. (Use rho for Ï as necessary.) y =1/5 y = 0 x = 4

*January 26, 2012*

**College Algebra 2**

The number of kilograms W of water in a human varies directly to the mass of the body. A 96_kg person contains 64 kg of water. How many kilograms of water are in a 60_kg person?

*September 25, 2011*

**Math**

Please help solve 2a²+5a+3

*September 22, 2010*

**Math**

2a²+5a+3

*September 21, 2010*

**chemistry**

the molarity of ferric ion in a .060 M solution of Fe2(SO4)3 is?

*February 18, 2010*

**volcabulary**

One who prefers solitude to companionship is an A> ascetic B> introvert i think a

*August 29, 2009*

**chemistry**

Write the balanced chemical reaction for the rusting of iron? the acidic vinegar dissolved a protective coating off the steel wool, allowing the oxidation of the steel to begin. This process is called rusting. In this reaction, iron(III) is combined with oxygen gas to form ...

*April 23, 2007*

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