# Posts by Daniel

Total # Posts: 1,109

Calculus II
1) Compute the indefinite integral: integral 2x ln(x^2 - 8x + 18) dx 2) Note that x^4 + 1 = (x^4 + 2x^2 + 1) = (x^2 + 1)^2 - (sqrt2x)^2 ... use this trick to compute the following indefinite integral as an elementary function (with exact coefficients). integral 1 / (x^4 + 2x^2...

Calculus
If two people are taking a dog on a walk and have two leashes. One is at 18 degrees with a force of 23lbs and the other is at 15 degrees with 27lbs, how hard is the dog pulling if it holds them at a stand still?

Algebra
Would someone please verify my answer for the solution set of (x+20)(x -10)(x+11)>0, {x|(-20,-11)<x<(10,infinity sign)}

Algebra
Would someone please verify my answer for the solution set of (x+20)(x -10)(x+11)>0, {x|(-20,-11)<x<(10, ‡)}

Algebra
I posted this before but could not understand the answer. How do I write the solution set of: {x| } for (x+20)(x -10)(x+11)>0

Algebra
I really appreciate your help. I am still a little confused, when I add -36 +9 -99 I get 126. I don’t understand the -72.

Algebra
For w-4/w-9 – w+1/w+9 + w-99/w^2 – 81 = ,I get: 14w-126/w^2-81 or 14w-14/w^2-9. Would that be correct?

Algebra
Sorry, this is making me crazy. Thank you for pointing out my error. w-4/w-9 – w+1/w+9 + w-99/w^2 – 81 =

Algebra
Thank you for answering (x+20)(x -10)(x+11)>0. How do I write the solution set of {x| }

Algebra
Can anyone help with this last question? 8v/v^2-49 + v/v-7

algebra
I don’t really understand this and it is on a test; w-4/w-9 – w+1/w+9 + w-99/w^2 – 18 = Can anyone give me a hint...please

algebra
OK what you say make sense but I am unsure of the solution sets of {x| }

algebra

Math
How do I do 6y/5x + 3y/10?

Math
What is 2x + 6y = 12? I need to find y, the slope, and the y-intercept. Please help!

math
Two fractions equivalent to 2/5: 4/10 and 6/15. Two fractions equivalent to 7/11: 14/22 and 21/33 Two fractions equivalent to 150/325: 300/650 and 450/975. To solve this I multiplied each fraction by a number (e.g. 2/2) For 2/5, I did 2/5 x 2/2 = 4/10. I hope I helped!

english
what are the adjectives in this sentence. it was a wild, dangerous ride down the rapids in an old canoe.

That is not a sentence.

algebra
1. x2+5x+6 2. x2+7x+12

math
Nth expression for the following:6,11,17,24,32.....

calculus
Let g(x)= integraton (top 3x, bottom 2) e^t^4 dt. Find the value of g'(0).

math
Hi, this is a worksheet problem so i do not have the answer to it. It came with a pic though. Here is the link. Thanks. img121.imageshack.us/i/dsc01000vu.jpg/

english
extrapolated

english
after studying the clues, sherlock holmes _____________ that the butler had committed the murder. reconciled endeavored extrapolated aquiesced infused

english
1 A 2 E

english
1. B 2. C

english
1) lassitude 2) D

english
1) Due to the _____ of the fire, the residents of surrounding homes were evacuated. (A) magnitude (B) consensus (C) laaitude (D) deportment (E) simulation 2) Sophia lives a(an) _________nieghborhood; many people have a similar_________- (A) prosperous.....occupation (B) ...

english
thank you

english
The boys ____ climbingup the ______ cliff,but decided it was too dangerous. (A) asecended....lethal (B) contemplated....sinister (C) endured....mundane (D) simulated....dreary (E) declined....obscure

Physics
Yes, it will. use equation: minimum thickness= wavelength(nm)/(4*index of refraction) so for your example it would be t=600/(4*1.25) which comes to 120nm. for the second part, use eq. 2t= ((m*wavelength)/index of refraction) so again 2t=((1*600))/1.44) and t= 208.3nm

science
what is the oort and were is it located

chemistry
65.2g

spanish
Form complete sentence using the imperfect: Cada semana/yo/asistir a/escuela primaria

MATH
You shouldn't search help on PROMYs questions...

That's the word that I'm not allowed to use. So If I use compromise in the second blank, I don't know what to use in the first blank.

that's what I thought, but what about the first blank?

We had a great difference of _______, we finally came (together) on the (opinion) that something needed to change so we made a _______ that each person could live with. I need to fill in the blanks that mean the same as the words in parenthisis. This is a stem homework project...

Math
Bob and his dad visited the hardware store on Saturday. They observed the following transactions: Mr. Harris bought 4 for \$0.50, Mrs. Clarke bought 21 for \$1.00, Mr. Montaro bought 1,134 for \$2.00, and Ms. Park bought 450 for \$1.50. What were they buying?

math
2x^3(x^2+2x)^-1/2 -(x^2+2x)^1/2 / x^2 the whole numerator is over x^2

Hey there all! Im desperate for some advice on my subjects at IB! I have decided on chem bio higher and english spanish standard. I am battling between Maths and Economics higher! I really like Maths and had decided to take it but now that I told people my options everyones ...

Algebra 1
Dumb teacher Mrs sue has no life when will we ever use any of this \$hît. But anyway the answer is; it is tacks free. No spaces.

chemistry
What is the pH of the solution that results from mixing the following four solutions together? (1) 150. mL of 0.250 M NaCl (2) 300. mL of 0.200 M HCl (3) 100. mL of 0.050 M HNO3 (4) 450. mL of 0.200 M NaOAc any help is greatly appreciated!

chemistry
What is the value of [HCO3- ]/PCO2 for someone with mild acidosis, with a blood pH of 7.30? 1. 0.038 2. 0.38 3. 0.030 4. 0.30 5. 3.0

chemistry
Thanks a lot!

chemistry
Which of the following mixtures will result in the formation of a buffer solution when dissolved in 1.00 L of water? i) 0.50 mol HClO2 and 0.25 mol HCl. ii) 0.50 mol HClO2 and 0.25 mol NaOH. iii) 0.50 mol NaClO2 and 0.50 mol HClO2. iv) 0.50 mol NaClO2 and 0.50 mol HCl.

physics The range
U2 Sin 2a = g =34.66m

math
i need help rounding numbers. for example, 34.566 to the nearest hundreds.

algebra
2x^2-8x-42 over 6x^2 divided by x^2-9 over x^2-3x

math
2xsquare- 8x - 42 over 6x square divided by x square - 9 over x square - 3 x

math
a movie theater charges \$7 for an adult's ticket and \$4 for a child's ticket. on a recent night the sale of child's tickets was three times the sale of adult's tickets. if the total anount collected for ticket sales was not more than \$2,000, what is the ...

math
four times the larger number of two numbers is equal to seven times the smaller.the sum of the numbers is 22.find the numbers

algebra
a-13whena=13.so33-13=20 that's the ans 3x+2y-2zwhenx=5,y=2,z=1.so3(5)+2(2)-2(1)=17

How do you factor this expression? 10x+15

Calculus
Prove that the average of LRAM and RRAM is equal to TAM.

biology
explain the role of antigens and antibodies in natural and artificial control of diseases

social studies
Where did the pickle first originate?

Algebra
x + square root of 5 / x - square root of 5

accounting
“When in need, Google!” has become the single solution for all and any problem under the sun. Your accounting homework problems are no exception to this. By the time you settle down in college after finding campus routes, remembering locker codes and making new ...

s8impliy this exponential expression): -2 7 -8 ) 6 -9)8 (7) * (x) * (w * (x *(4) * -3) (w

algebra
How do you do standard form

social studies
the ottomans adopted a policy of religious tolerance.why did they follow this path?The golden Age of muslim.

Physics
A football player kicks a football with an initial velocity of 30m/s at an angle of 55 degrees relative to the flat ground. a)what is the speed of the football at its highest point b)find the highes point reached c)find the total time in the air d)how far is the football ...

math
What multiplication fact can be found by using the arrays for 2x9 and 5x9?

Physics
Measured along the surface of the water, a rectangular swimming pool has a length of 15.9 m. Along this length, the flat bottom of the pool slopes downward at an angle of 16.9 ° below the horizontal, from one end to the other. By how much does the pressure at the bottom of...

Physics
The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. The density of seawater is 1025 kg/m3. (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation ...

Physics
Standing waves are set up on two strings fixed at each end, as shown in the drawing. The two strings have the same tension and mass per unit length, but they differ in length by 0.55 cm. The waves on the shorter string propagate with a speed of 41.8 m/s, and the fundamental ...

Physics
A string has a linear density of 6.7 x 10-3 kg/m and is under a tension of 210 N. The string is 1.6 m long, is fixed at both ends, and is vibrating in the standing wave pattern shown in the drawing. Determine the (a) speed, (b) wavelength, and (c) frequency of the traveling ...

Physics
The transverse standing wave on a string fixed at both ends is vibrating at its fundamental frequency of 250 Hz. What would be the fundamental frequency on a piece of the same string that is twice as long and has four times the tension?

chemistry 11
Hi, I am stuck on a couple questions in chemistry 11. The questions are 1. Calculate the number of moles of the anhydrous salt left behind 2. Calculate the number of moles of water removed by heat from your sample of hydrate. 3. Calculate the moles of water per mole of ...

Can someone look over my admissions essay for Brown?

math
3,000 / 90 = 33.33 students per instructor 3,500 / 33.3 = 105.1 105 - 90 = 15

english
what does the prefix etym mean

literacy
i need to know which country these words came from caravan,yoghurt,sofa,dessert and shampoo

artist
1485 to 1489

social economics politics
debate the following proposition: "the countries of india and china have a "right" to pollute the environment until they catch up with more industrialized countries".

Physics
50

physics
F=ma , T=ma T = (61kg)(9.81m/s^2) = ? N (do the math) Constant rate would mean there is no acceleration, so T = ma + m(0)== ma Furthermore, if the gymnast is climbing up at a certain acceleration, lets say 2.1 m/s^2, use the rate at which they climb for the acceleration in the...

math
how can i round each number to the place of the underlined digit?

math
how can i rounfd each number to the place of the underlined digit?

government
What is the action between the President and another head of state called?

waht is used to mix substances, like a spoon, is two words?

MATH Dx
6/10

science
How do I diagram the four plant families? ( I remember rose family and pea family)

Science
What are the challenges of managing your chosen terrestrial resource issue?

fractions
i want to email you. please send email so i can send my math problems to you.

Algebra
In an arithmetic series, the terms of the series are equally spread out. For example, in 1 + 5 + 9 + 13 + 17, consecutive terms are 4 apart. If the first term in an arithmetic series is 3,the last term is 136, and the sum is 1,390, what are the first 3 terms?

arithmetic
N = the term number right?

arithmetic
How do you find the sum number of an arithmetic sequence? I forgot and my textbook does not explain it well.

Chemistry UGH
Help please! I can't solve any of these, would someone be as kind as to show me the answers? How many moles of NaHCO3 are in a 125.0 g sample of the compound? 3. How many moles are in 6.73 x 1024 water molecules? 4-5. AgBr, a chemical used in photography can be made with ...

Chem
If the rocket engine contains 1500.0 g of H2O2 and an excess of N2H4, what volume of water vapor will be produced when the rocket fires up to a temperature of 540oC and a pressure of 1.2 atm? I honestly don't GET this thing, ugh =( Please Help!!

Penn Foster Examination #93051 Cooking Appliances I've gotten 16 out of 25 completed but I'll just post the whole exam to make sure I have THOSE right. Thanks for your help guys!

Calculus
YA i can't fingure out how to use it either im thinking that it could be the xi = a+x(change of x)

math
I have the number of gun deaths in 2005=36,038 2009=43,146 I think these are too high but I followed the equation to arrive at these numbers. Have I made a mistake? I cannot figure the 9,383 number into a year after 2000.Can anyone help me?

math
The equation y=1777x27,153 can be used to predict the number of gun deaths in the US x years after 2000 that is x=o corresponds with 2000 x=3 corresponds to 2003 etc Predict the number of gun deaths in 2005 and 2009 In what year will the number of gun deaths be 9,383?

Math
I have figured the equation for this word problem Train A is traveling parallel to Train B. Train A is traveling at 100 mph and Train B at 110 mph Train A passes a station at 1:15pm Train B passes the same station at 1:45pm When will Train B catch up with Train A? I have 100*t...

Algebra

English(work cited page)
is anyone on

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