Tuesday

October 13, 2015
Total # Posts: 146

**please help!!**

Find the equation of the tangent line to the graph of f(x) = 2x − 6/x + 1 at the point at which x = 0. (Let x be the independent variable and y be the dependent variable.) I don't know how to find the derivative, i Keep getting it wrong. But I know where to go after ...
*October 1, 2015*

**math**

Thank you so much!
*September 30, 2015*

**math**

For what intervals is g(x) = 1/x2 + 1 concave down? (Enter your answer using interval notation.) For this question I understand that we have to find where the second derivative is negative. So first I found the first derivative and got 2x/x^4+2x^2+1 and then I took the second ...
*September 30, 2015*

**math**

For the derivative I got -4/(x+1)^2 by using the quotient rule. So then I plugged in zero and got -4 to be the slope. Then when I plugged 0 into the original function and got 2(0)-6/1 which meant that y=-6. Then I tried to find b by doing 6=-4(0)+b and got b to be -6. Thus my ...
*September 30, 2015*

**math**

Find the equation of the tangent line to the graph of f(x) = 2x − 6/x + 1 at the point at which x = 0. (Let x be the independent variable and y be the dependent variable.) I got this question wrong. I thought the answer would be y=-4x-6 I followed the following steps: 1...
*September 30, 2015*

**Math**

Oh wow, I was really off. Thank you so much for explaining it to me!
*September 30, 2015*

**Math**

I know that I have to apply the product or quotient rules for these problems but I'm not sure why I'm getting them wrong. Please help me! Find the derivative: 1) f(x) = x^6/108 times (6 ln(x) − 1) I got: 6x^5 times 6 ln(x)-1 + x^6/108 times 6/x 2) f(x) = (ax + b...
*September 30, 2015*

**statistics**

Pharmaceutical companies advertise for the birth control pill an annual efficacy of 98.6% in preventing pregnancy. However, under typical use the real efficacy is only about 95%. That is, 5% of women taking the pill for a year will experience an unplanned pregnancy that year. ...
*September 21, 2015*

**math**

Ronnie was 6 times as old as jhon 6 years ago. Four years from now ronnie will be 4 times as old as jhon. How old is jhon now?
*September 8, 2015*

**Science**

Im having trouble with reading a chemical equation. ( Numbers on the right side of the element are subscripts ) A) 2SO2 + O2 +2H2O -> 2H2SO4 1. How many total molecules are represented? ( I m having trouble recognizing when it s a molecule or just an element and which is ...
*April 16, 2015*

**Science**

Im having trouble with reading a chemical equation. ( Numbers on the right side of the element are subscripts ) A) 2SO2 + O2 +2H2O -> 2H2SO4 1. How many total molecules are represented? ( I m having trouble recognizing when it s a molecule or just an element and which is ...
*April 16, 2015*

**grammar**

We just moved from Atlanta, Georgia, to 2716 Hickory Blvd., Austin, Texas. Is this sentence correct? I think it's not. I think the answer should be: We just moved from Atlanta, Georgia to 2716 Hickory Blvd. Austin, Texas. I don't think commas are needed after Blvd. and...
*February 25, 2015*

**honors chemistry**

if you obtain 10 moles of water sugar sodium chloride copper and Styrofoam will each sample have the same number of particles?
*February 24, 2015*

**honors chemistry**

I'm having trouble with this question in my molar mass lab. if you obtain 10 grams of water, sugar, sodium chloride, copper, and Styrofoam will each sample have the same number of particles?
*February 24, 2015*

**math**

Henry is attending a rodeo in Union County. The nearest airport is in Vindale, which is 33 miles away. On a map, the rodeo grounds and the airport are separated by 3 inches. What scale does the map use?
*February 17, 2015*

**grammar**

Thank you for the help! I understand the number of people is plural. It is nice of you to tutor online. Thank you for what you do, it makes a difference.
*January 28, 2015*

**grammar**

Hello, and good afternoon. My question deals with subject verb agreements. I understand time periods and amounts are singular verbs. Here are my samples: 'Three weeks is a lot of time to do a project,' and 'One half of the children like cupcakes.' I know when ...
*January 28, 2015*

**physics**

A roller coaster car with a mass of 130 kg travels through a loop with a diameter of 20meters. What is the minimum speed at the top of the loop so that the car stays on the tracks? m= 130kg r= 10m v= ?
*January 7, 2015*

**English**

You rock! Thank you! I just got it. For what you do, thank you. I can't tell you how much you help.
*December 16, 2014*

**English**

Was is a linking verb, so let me think, would the clause that we will be moving in the spring be a predicate nominative because it is identifying or renaming the subject of the sentence? Is what the subject? Thank you for helping me. I'm more lost than I thought!
*December 16, 2014*

**English**

The sentence is 'What we forgot to mention was that we will be moving in the spring.' I found a clause, it's a noun clause. It's 'that we will be moving in the spring.' I think it's being used as a direct object. We is the subject. Forgot is the ...
*December 16, 2014*

**English**

Thank you Writeacher, I pray you are blessed for your help.
*December 16, 2014*

**English**

Yes, the sentences we receive are really bad! I've talked to this teacher about this. You know how there are some who feel they are above question? She's one of them. With that in mind, do you concur it's an adverb clause? Thanks so much!
*December 16, 2014*

**English**

The is the sentence I'm uncertain about: These old journals are wonderful to learn what life was like a century ago. I know the infinitive is 'to learn.' I think it is being used as an adverb. It's modifying the adjective 'wonderful.' It's not a ...
*December 16, 2014*

**Physics**

A 24g ball of clay traveling east at 3.3m/s collides with a 33g ball of clay traveling north at 2.4m/s . 1a)What is the movement direction of the resulting 57g blob of clay? 1b)What is the speed of the resulting 57g blob of clay?
*December 7, 2014*

**Economics**

How to get annual interest cost?
*November 18, 2014*

**English**

Okay, I think I got this. The subject is they and the verb is inhabit. "That" became a direct object. I think I understand! Thank you very much. I keep getting confused on questions like these in my homework. Thanks again, I am very grateful.
*November 6, 2014*

**English**

The verb in the clause is inhabit. The subject is they.
*November 6, 2014*

**English**

Hermit crabs rely on a supply of empty mollusk shells that they inhabit. What is the function of the relative pronoun in the clause 'That they inhabit'? A. Possessive B. Object of a preposition C. Direct object D. Subject I think it is either direct object or subject. ...
*November 6, 2014*

**math**

*I forgot to add that, I always get a never ending decimal as the answer... please help :)
*October 18, 2014*

**math**

Mike fills his car's tank up with 20 gallons of regular gas at $2.09 per gallon. His car averages 25 miles per gallon. How many miles can Mike drive on a full tank of gas?
*October 18, 2014*

**Physics**

Find the average velocity (in m/s) of an object that starts 200 meters north of town and is 1200 meters north of town after 200 seconds.
*September 3, 2014*

**Pre cal**

1.Find the domain of the function algebraically y=3x-1/(x+3)(x-1) y=(1/x)+5/(x-3) 2.Find the range of the function y=10-x^2 y=(3+x^2)/(4-x^2) Please help me understand how to do them.
*September 1, 2014*

**math **

= ( 1 + 3) * ( 6 - 4 / 2)
*August 12, 2014*

**writing (and other)**

i need HELP!i cant answer the questions about hard topics.in all subjects!please help me.........
*August 9, 2014*

**Chem **

For a particular reaction H = -32 kJ and S = -98 J/K. a.At what temp will the reaction be at equilibrium? b.If the temperature is increased from the equilibrium temperature what will happen?
*July 30, 2014*

**Statistics**

A researcher believes that the percentage of people who exercise in California is greater than the national exercise rate. The national rate is 20%. The researcher gathers a random sample of 120 individuals who live in California and finds that the number who exercise ...
*May 11, 2014*

**math**

.15
*May 2, 2014*

**Trigonometry**

An observer (0) spots a plane flying at a 55 degree angle to his horizontal line of sight.If the plane is flying at an altitude of 21,000 ft., what is the distance (x) from the plane (P) to the observer (0)
*April 29, 2014*

**math**

a jar contains 26 fluid ounces of spaguetti sauce. How many cups of spaguetti sauce do 4 jars contain?
*February 20, 2014*

**Math**

(4k+5)(k+1)=0
*February 13, 2014*

**Math**

My answer, that I got, was 225.
*January 16, 2014*

**Chemistry**

How many grams of NaCl are present in a 300 grams salt solution containing 9% NaCl ?
*November 6, 2013*

**algebra**

Beatriz is creating graphs for her city’s Parks Department. Beatriz is trying to persuade the Parks Department to put in more gazebos for shade. For a local park, Beatriz wants to demonstrate the attendance as it changes every week. She also wants to show the temperature ...
*October 20, 2013*

**math**

Don't know the answer
*September 23, 2013*

**physics**

The amount of energy needed to power a 0.10-kW bulb for one minute would be just sufficient to lift a 1.0-kg object through a vertical distance of
*August 18, 2013*

**chemistry**

N2(g) + 3H2(g) → 2NH3(g)+ 22,000 cal equals how much ΔH
*June 3, 2013*

**math**

45 Degrees
*May 3, 2013*

**4th grade math**

360÷18=20°=20÷50=40 which is 40 degrees for each part
*April 16, 2013*

**Calculus**

Find constants a and b in the function f(x)=axe^(bx)such that f(1/7)=1 and the function has a local maximum at x=1/7. a = b =
*March 27, 2013*

**Science**

The rms(root-mean-square) value of a periodic signal s(t) is defined to be rms [s]=(1/T Ss^2t dt)^1/2 where T is defined to be the signal's period: the smallest positive number such that s(t)=s(t+T). What is the rms value of the sinusoid s(t)=Asin(2πf0t)? (Again, ...
*January 25, 2013*

**Science**

What is the period of the sinusoid s(t)=Asin(2πf0t)
*January 25, 2013*

**College Algebra**

I am using Hawkes Learning System (8.7 Nonlinear Systems of Equations)and my problem is x^2+y^2=13 and y+7=x^2. The answers I came up with are 2 square root of 3 and 3 for my x's. And I received (5,-4) as the y-coordinates. Is this correct?
*November 14, 2012*

**social studies**

why did the gap between the rich and poor weaken the shang
*October 26, 2012*

**7th grade math help asap plz**

i'm in the 6th grade and i know the answere to that!!
*October 21, 2012*

**Math**

which fractions are less than 5/6? 2/5 1/12 25/40 10/20 8/9 how do i know which is greater or less?
*October 9, 2012*

**Math**

which fractions are less than 5/6? 2/5 1/12 25/40 10/20 8/9 how do i know which is greater or less?
*October 9, 2012*

**literature **

What does the poet find ironic about her situation? In the poem In memory of M.B by Anna Akhmatova.
*September 21, 2012*

**Math**

😪😏😏😏
*September 18, 2012*

**Physics**

A car starts from rest and travels for 7.0 s with a uniform acceleration of +2.1 m/s2. The driver then applies the brakes, causing a uniform acceleration of -2.0 m/s2. If the brakes are applied for 1.0 s, determine each of the following. 12.6 m/s at braking period. How far has...
*August 27, 2012*

**math**

62 more than the quotient of 18 and 3
*June 6, 2012*

**chemistry**

Describe in detail, the steps a student needs to carry out to accurately obtain a 500 ml solution of .100 M HNO3 from a solution of 1M HNO3
*April 13, 2012*

**physics - help !!!!!!!!**

The magnitude of a vector is always : - a positive number - greater than 1 - an integer - none of the above. Thank you
*April 12, 2012*

**government**

C New judge is appointed
*April 2, 2012*

**physics**

The National Transportation Safety Board is testing the crashworthiness of a new car. The 1.87 103 kg vehicle, moving at 11.3 m/s, is allowed to collide with a bridge abutment, being brought to rest in a time of 0.463 s. What force, assumed constant, acted on the car during ...
*March 11, 2012*

**chemistry**

What is the volume of CO2 at 25 degrees C and 1.3atm if 10.0g of Cburns at STP?
*February 26, 2012*

**Science**

The rest stops the driver made are included in the calculations because that is hoe the problem is defined. However, suppose the bus driver's manager wants to know the average speed at which the driver was actually driving the bus that day while he was on the road. In this...
*February 18, 2012*

**punctuation and grammer**

My garden is full of water,because of yesterday's rain. Is this correct?
*January 3, 2012*

**Anatomy**

what is the white matter tracts in the ventral portion of the midbrain?
*October 10, 2011*

**Math**

Thank you I understand know
*August 29, 2011*

**Math**

Write the word form of the number that is 10,000,000 greater than 6,021,849.
*August 29, 2011*

**Reading **

Thank you so much I clearly understand now
*June 16, 2011*

**Reading **

Mary Olivers poem the journey explain the decision that the "you" in the poem made, and whether or not you think it was the right decision. I don't understand what their trying to say
*June 16, 2011*

**Math**

B.it has 4 right angles
*April 7, 2011*

**economics**

why was the federal reserve established ?
*February 15, 2011*

**Language Arts**

Pronuniation
*January 19, 2011*

**11th grade**

I need help interpreting a quote...." in this world goodness is destined to be defeated ".
*December 9, 2010*

**Performing and Visual Arts**

Why do humans create and perform?
*November 26, 2010*

**U.s Gov**

The fourth amendment was written in part to ensure the government did not allow ?
*October 29, 2010*

**math**

Help me with this please. I need statements and resons.
*October 27, 2010*

**math**

Given: line nm is congruent to qr; angle m and angle r are right angles; line mp is congruent to ro. Prove: triangle nmo is congruent to triangle qrp and angle n is congruent to angle q
*October 27, 2010*

**math**

inverse of y=-√(9-x^2 )
*July 26, 2010*

**math**

Find the inverse for graphing y=f(x)=3^-x
*July 26, 2010*

**English 101**

b,a,b,b,a,c,a,b,c,a,a,b
*June 30, 2010*

**math**

(x-1)(x+5) for x^2+4x-5
*May 28, 2010*

**Chemistry**

A popular brand of automobile radiator antifreeze advertises that their product (ethylene glycol; C2H6O2) provides engine protection from temperatures of -64C to 135C when mixed with water in a 50%/50% mix. What is the boiling point elevation and freezing point depression ...
*April 19, 2010*

**answer please!!!!! Math**

I'm having trouble with these 2 problems. (-7+p)(8+p) & (p-7)(p+8)
*April 18, 2010*

**math, answer please!**

I don't understand how you do these 2 problems. (p-7)(p+8) & (-7+p)(8+p)
*April 18, 2010*

**help please, math.**

(-7+p)(8+p) I don't understand this at all.
*April 18, 2010*

**Math**

(p-7)(p+8)
*April 18, 2010*

**Language**

friendliness, candied or candies, handiness, envied or envies it may help to use a dictionary if you are unsure of a word. They provide suffixes. :)
*April 15, 2010*

**Latin prefix**

don
*March 31, 2010*

**Biology**

What is the process of cellular respiration and why is it so important? Thank you.
*March 25, 2010*

**Biology**

What is the process of cellular respiration and why is it so important? Thank you.
*March 25, 2010*

**Chemistry --really need help!**

nevermind i think I get it now... thanks for your help
*February 19, 2010*

**Chemistry --really need help!**

Can you explain why (3*.3*.05) for H2 is subtracted from .2?
*February 19, 2010*

**Chemistry --really need help!**

I am really struggling with these problems!! A reaction mixture that consisted of 0.20 mol N2 and 0.20 mol H2 was introduced into a 25.0 L reactor and heated. At equilibrium, 5.0% of the nitrogen gas has reacted. What is the value of the equilibrium constant Kc for the ...
*February 19, 2010*

**Chemistry**

The initial pressure of BrCl(g) in a reaction vessel is 1.6 mbar. If the vessel is heated to 500 K, what is the equilibrium composition of the mixture? See this table for data on the reaction. P Br2 ? mbar PCl2 ? mbar P BrCl ? mbar
*February 19, 2010*

**Chemistry**

This might seem silly but in the rxn O^2- + H2O --> 2OH-, can OH- behave as both the conjugate acid and the base?? Or is it one or the other?
*February 19, 2010*

**Chemistry **

Benzene has a vapor pressure of 100.0 Torr at 26°C. A nonvolatile, nonelectrolyte compound was added to 0.309 mol benzene at 26°C and the vapor pressure of the benzene in the solution decreased to 60.0 Torr. What amount (in moles) of solute molecules were added to the ...
*February 15, 2010*