Wednesday

October 7, 2015
Total # Posts: 23

**Mathematical Economics and Linear Programming**

Using the quotient rule, find the derivation of the following function: a) (ax^2+b)/(cx+d) Here is my work but i need help because am lit bit confuse solution a) (ax^2+b)/(cx+d) df/dx = (2ax)(cx+d)-(ax^2+b) (c)/(cx+d)^2 df/dx = 2acx^2+2adx-acx^2+bc/(cx+d)^2 df/dx =acx^2+2adx+...
*August 12, 2015*

**Precalculus (Logarithmic)**

Ok and thanks alot. But those two are without parentheses.
*August 5, 2015*

**Precalculus (Logarithmic)**

Express each of the given question in logarithmic form. i) e^2x = 15 ii) e^x-4 = 1/2 iii) a^x+1 = 5 Solutions But am not sure if this is the way it should be done. i) e^2x = 15 In (15) = 2x ii) e^x-4 = 1/2 In (1/2) = x-4 iii) a^x+1 = 5 Log 5 with base "a" = x+1
*August 5, 2015*

**Precaculculus**

Suppose you are told that log(2)=0.3562 and log(3)=0.5646. All of them with the base of 'a'. Find: i) log(6) ii) log(9) Solutions i) log(6)= log (3)(2) = log 3 + log 2 = 0.5646 + 0.3562 = 0.9208 ii)log(9)= log 3^2 = 2 log 3 = 2 (0.5646) = 1.1292
*August 3, 2015*

**Math**

Suppose that a certain material has a half life of 25 years, and there are A(t)=10(1/2)^t/25 grams remaining after t years. find: i) initial amount i) Amount after 80 years Solutions i) A(0)=10(1/2)^(0/25) =10(1/2)^0 =10(1) =10 ii)A(80)=10(1/2)^(80/25) =10(1/2)^(16/5) =10(0....
*August 3, 2015*

**Social Studies**

Is there a website that talks about rebuilding the twin towers?
*May 25, 2015*

**English**

Are these right "Stamp collecting" is fun for children and adults alike. (Subject) Which "of my stamps" do I like most? (Adverb) Collectors "engaging in their hobbies" are never bored. (Adjective) Many residents of Hawaii work in "fishing&...
*November 29, 2013*

**physics**

An ambulance car is going with a speed of 60 km/h, while a car is trying to go around it in a circle with a speed 50 km/h. If the sound that ambulance car emits has a frequency of 1 kHz, which frequency does the driver of the car hear in Hz when the ambulance car is in the ...
*September 22, 2013*

**Chemistry**

how many ml of .5M HCL are required to neutralize 600 mg of Mg(OH)2?
*May 20, 2013*

**mathematics**

how do I cope with intermediate mathematics e.g log rhythms?
*October 16, 2012*

**Science**

the speed of the two cars vary, but in your case if it is a 2000-kg car their speed just afterward is 2059 miles per hour.
*October 16, 2012*

**Chemistry**

that is right. but if it is 0.850 grams of Na2s04 it is completely diffrent.
*October 16, 2012*

**physics**

x=1/2*g*t^2 x=910-150=760m a=9,81m/s^2 t=sqrt(x/(0.5*g)) that is t=sqrt(760/(0.5*9,81)=12,44s=12s
*April 21, 2012*

**math**

4x^3 = 1.12x10^-12 x= 6.54 x 10^-5 what steps do you take to get that answer??
*January 18, 2012*

**Math**

if i have: 31x^5=1.4x10^-85 what would x equal?
*January 18, 2012*

**MATH**

If I have: 4x^3 = 2.80x10^-9 what would x eqaul and how would i figure that out?
*January 17, 2012*

**MATH**

ok, so what if you have 4x^3 = 2.80 x 10^-9 what would x equal in this case and how would you get it? I really appreciate ur help. As you can tell i am slightly confused. Ur explanations are helping greatly.
*January 15, 2012*

**MATH**

why do you square root it twice?
*January 15, 2012*

**MATH**

I have 27x^4 = 1.1 x 10^-36 I have to figure out what X equals. The answer is x= 4.5 x 10^-10 How do you get that for the answer??
*January 15, 2012*

**trigononometry**

(12x2.17) cos0 120.6
*June 7, 2011*

**criminal justice**

help me with this assignment
*January 27, 2010*

**Economics**

Poland Spring, Dasani and Aquafina who together produce 90% of all the bottled water consumed in the US, each spend well over $300 million a year on television advertising campaigns, promoting their water brands. If one firm is advertising its brands heavily, the others must ...
*July 27, 2009*

**math**

how do i find the area of a shape
*November 27, 2007*

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