Saturday

November 28, 2015
Total # Posts: 829

**Mat 116-Algerba 1a**

-3(x +8) = -6 I keep getting it wrong. Help x+8 = -6/-3 - = 2 x = -6 compare the numbers -2.002 and -2.02 using an inequality. compare the numbers -2.002 and -2.02 using an inequality.it is 2 because there is no diferrence!
*May 13, 2007*

**calculus**

relative extrema x^3 + 1/2x^2 - 2x + 5 Ok I have 3x^2 + x - 2 = 0 Am I on the right track? I think i know why I kept on asking for help with these pribelms. I forgot the step of factoring. Please check... 3x^2 + x - 2 = 0 (3x-2)(x+1)=0 x=2/3, x=-1 Correct. Nice job. If you ...
*March 9, 2007*

**Calculus**

relative extrema x^4-2x^2+5 so far I know how to find the derivative which is 4x^3-2x now I am stuck... Please help Huh? 4x^3-2x=0 2x(2x^2-1)=0 and what are the roots? I will give you a hint: one is x=0 The other two are in the second parenthesis. Is it x-1 and x=-1 I did a ...
*March 9, 2007*

**calculus**

I am having trouble with this problem also derivative differentiate f(x)=(3-x)^4(x+5)^3 so far I have 4(3-x(x+5)^3+3(x+5)(3-x) Not quite right. Treat it as d/dx[u(x) + v(x)] = u dv/dx + v du/dx u(x) = (3-x)^4 v(x) = (x+5)^3 du/dx = -4(3-x))^3 (using the chain rule) dv/dx = 3(x...
*March 1, 2007*

**calculus**

derivatives differentiate y=x^7/3 So far I have Y=7/3X Is this all there is to this problem? Using the power rule, you bring the exponent down, just like you did. Then, you subtract one from the given exponent to get the new exponent. 7/3 - 1 (which is 3/3) gives you a new ...
*March 1, 2007*

**Calculus**

Derivative Differentiate f(x)=(5x-4)^2 There are two ways to do this: (1) let u = 5x-4, and use the "chain rule", df/dx = df/du * du/dx OR (2) expand the polynomial to f(x) = 25 x^2 -40x + 16 and differentialte it term-by-term. You will get the same answer either way...
*February 26, 2007*

**Finance**

The Carter Company's bond mature in 10 years have a par value of 1,000 and an annual coupon payment of $80. The market interest rate for the bond is 9%. What is the price of these bonds The coupon rate on the bond, (interest/principal at maturity) = 8% Since prevailing ...
*February 14, 2007*

**math**

Given: f(x)=x^2-1 Find a simplified form of the difference quotient. I will be happy to critique your thinking. I am not going to do it for you. The link I gave you shows you how. Is it set up like this 1(x+h)^2 - 1(x)
*February 9, 2007*

**Calculus**

Given: F(x)= 5x^2 a) find a simplified form of the difference quotient b) find the average rate of change (difference quotient)x=4, h=2 Please help... http://www.mathwords.com/d/difference_quotient.htm Ok I went to this site and I saw the formula, how do I set up a problem ...
*February 9, 2007*

**algebra**

This one really threw me off... find the slope of the line containing the points (x, 2x) and (x + h, 2(x +h)) You have to first find the slope, which is change in y over change in x: {[2(x-h)]-2x}/[(x+h)-x] (2x-2h-2x)/(x+h-x) -2h/h m=-2. i don't have an anwser but i need ...
*January 23, 2007*

**algebra**

find the equation of a line with slope 4/5 and y-intercept (0,-7) Do I still use the formula y=mx+b? Yes. Let me know what you come up with and I'll let you know if you are correct. So far I came up with y+7 = 4/5(x-0) Now I am stuck... OK, you could do it that way, and ...
*January 23, 2007*

**algebra**

find the y-intercept and the slope x + 2y -3 =0 You first have to get this into slope-intercept form: 2y=-x+3 y=-0.5x+1.5 This form is y=mx+b, where m is the slope and b is the y-intercept.
*January 23, 2007*

**PLEASE SOLVE MY RIDDLE**

A diller, A dollar, A ten o'clock scholar, what makes you come so soon? You used to come at ten o'clock, But now you come at noon.
*December 24, 2006*

**math**

3x-5/6=7x+4/4 If you mean (3x-5)/6= (7x+4)/4 , then 12 x - 20 = 42 x + 24 and you can take it from there. If you mean 3x - 5/6 = 7x + 4/4, then the answer will be different. Please use parentheses to clarify ambiguous algebraic statements such as the one you typed.
*December 22, 2006*

**algebra**

e^3x-5=17 Dee: You need to use closure marks. It is impossible to decipher your questions without them. Is this: e^(3x-5)=17 e3x-5=17 or e^(3x)-5 =17 e3x-5 =17 Sorry for the confusion. It is e^(3x-5)=17 e^(3x-5)=17 Take the ln (log base e) of each side. 3x-5= ln17 3x= ln 17 + ...
*November 27, 2006*

**algebra**

solve 4^3x-4=32^x+2 Please help! Do you mean 4^(3x) -4 = 32^x +2 ? yes If that is really what you mean, I cannot get a closed-form solution for you. You would have to solve it by trial-and-error or graphical means. If, on the other hand, you mean 4^(3x-4)=32^(x+2), then take ...
*November 26, 2006*

**algebra**

solve 4^-x=64 Please help -x log 4 = log 64 -x = log 64/log 4 = 3 x = -3
*November 26, 2006*

**physics**

A navy jet with a weight of 231 kN requires an airspeed of 85 m/s for liftoff. The engine develops a maximum force of 107 kN, but that is insufficient for reaching takeoff speed in the 90 m runway available on an aircraft carrier. What minimum force (assumed constant) is ...
*November 26, 2006*

**physics**

An interstellar ship has a mass of 1.20 X10^6 kg and is initially at rest relative to a star system. a) what constant acceleration is needed to ring the ship up to a speed of .10c (where c is the speed of light, 3.0X10^8 m/s) relative to the star system in 3 days? b) what is ...
*November 26, 2006*

**physics**

Imagine a landing carft approaching the surface of Callisto, one of Jupiture's moons. If the engine provides an upward force (thrust) of 3260 N, the craft descends at constant speed; if the engine provides only 2200 N the craft accelerates downward at .39 m/s^2. a) What is...
*November 26, 2006*

**physics**

A 40 kg skier comes directly down a frictionless ski slope that is inclined at an angle of 10 degrees with the horizontal while a strong wind blows parallel to teh slope. Determine the magnitude and diercection of the force of the wind on the skier id a) magnitude of the skier...
*November 25, 2006*

**physics**

Tarzan wights 820N, swings from a cliff at the end of a 20m vine that hangs from a high tree limb and initially makes an angle of 22 degrees with the vertical. Immediately after Tarzan steps off the cliff the tension in the cine is 760N. Choose a coordinate system for which ...
*November 25, 2006*

**eth**

how do you think an average american's perceptions of each group are created? by there upbringing and family teaching Our perceptions of each ethnic group are influenced by our culture, our parents, and our own personal experiences. I suspect there's an underlying ...
*November 5, 2006*

**Stats**

Dee's store monthly sales for April, May, June are three independent random variables with means and variances as follow: April: Mean: $9500 Variance: $1250 May: Mean: $7400 Variance: $1425 June: Mean: $8600 Variance: $1610 a) find the mean and standard deviation of the ...
*November 3, 2006*

**Stats**

Dee's store monthly sales for April, May, June are three independent random variables with means and variances as follow: April: Mean: $9500 Variance: $1250 May: Mean: $7400 Variance: $1425 June: Mean: $8600 Variance: $1610 a) find the mean and standard deviation of the ...
*October 29, 2006*

**word unscramble**

a true temper
*September 28, 2006*

**social studies**

What are FIVE CITIES that run along the Mississippi River? the state capital and alabamma help me on this on this paper Since this is not my area of expertise, I searched Google under the key words "'Mississippi River' cities" to get these possible sources: (...
*September 25, 2006*

**orientalism of muslim and arab american**

i think I am going to lose my A with this question because I can't find anything on it!
*August 6, 2006*