Friday

October 9, 2015
Total # Posts: 581

**calculus**

The question is: tan(arcsinx)= I know that inverse of sin is 1/sqrt(1-x^2) however this question still confuses me. The outcome is x/sqrt(1-x^2), how did the tan create the additional x ?
*October 16, 2013*

**calculus**

I am still confused. hm.
*October 16, 2013*

**calculus**

f(x) = ln(ln(lnx)) has the domain of (e, infinity). I am not sure how this occurs however. I know in the case of ln x, x must be greater than 0. However where does e come from. e is the base of log in the case of ln, but something is just not clicking for me.
*October 16, 2013*

**calculus**

so basically what i said in the original question is irrelevant.
*October 16, 2013*

**calculus**

oops i think i meant to say that the derivative is 1/sqrt(1-x^2) dang I am tired.
*October 16, 2013*

**calculus**

The question is: tan(arcsinx)= I know that inverse of sin is 1/sqrt(1-x^2) however this question still confuses me. The outcome is x/sqrt(1-x^2), how did the tan create the additional x ?
*October 16, 2013*

**Calculus**

Perfect, thanks.
*October 14, 2013*

**Calculus**

I need step-by-step help for solving the lim x -> 0 for the function sin(x)/(x + tan(x)) I can do simpler ones, but this one throws me off. Thanks.
*October 14, 2013*

**chemistry**

A mixture was formed by adding 4.56g of KCL to water to make 175mL of solution. The density if the solution is 1.12g/mL. Whatis the mass percent and what is the molarity of the potassium chloride solution?
*August 8, 2013*

**math**

Translate the following statement into a numerical expression: 3 times the quantity of H less 233.
*July 30, 2013*

**College Physics**

1. In a region of two-dimensional space, there are three fixed charges: +1 mC at (0, 0), −2 mC at (18 mm, -3 mm), and +3 mC at (-8 mm, 12 mm). What is the net force on the −2-mC charge? Find the magnitude and direction (counterclockwise from the x-axis).
*July 9, 2013*

**reading**

Barnetta is an idiot. answer for 30 is D. It can't be B because if the customer used the product for 3 weeks they can still return it as long as it's under 30 days. Using the electric shaver for 3 weeks is 21 days which is less than 30 days. answer for 31 is A. At ...
*June 13, 2013*

**Math**

Is 25x squared + 40x +15 a perfect square? And how do you factor it if it is?
*May 24, 2013*

**Math**

Using your answer to the question above, what is the net dollar amount of that rose order?
*May 20, 2013*

**Religion**

The days of Triduum are measured from _ _ _ _ _ _ to _ _ _ _ _ _.
*April 10, 2013*

**Physics**

A brick is thrown off a building at a 25 degree angle at 10m/s, it lands 40 meters away, How high is the building?
*March 26, 2013*

**chemistry**

85.0 of is initially at room temperature (22.0). A chilled steel rod at 2.0 is placed in the water. If the final temperature of the system is 21.2, what is the mass of the steel bar? Specific heat of water = 4.18 Specific heat of steel = 0.452 My answer was 32.752. I rounded ...
*March 26, 2013*

**chemistry**

85.0 of is initially at room temperature (22.0). A chilled steel rod at 2.0 is placed in the water. If the final temperature of the system is 21.2, what is the mass of the steel bar? Specific heat of water = 4.18 Specific heat of steel = 0.452 My answer was 32.752. I rounded ...
*March 26, 2013*

**math**

lol
*March 17, 2013*

**math**

Is there a way to prove this in upwards of 5 steps? Apparently there is?? Prove. 2^n + 2^n = 2^(n+1) I posted this before however apparently I need something more indepth in terms of the # of steps.
*March 17, 2013*

**math**

ok thanks
*March 17, 2013*

**math**

Alrighty, are there particular times you guys are most active?
*March 17, 2013*

**math**

Is it possible to set up a time to do a live chat with a tutor here? like for 15-20 min or so. I have a few questions, nothing major but would like to have answers explained to me/ any additional questions I have. Would be cool, i understand it is asking for alot.
*March 17, 2013*

**Chemistry**

A 100.0 g sample of water at 27.0°C is poured into a 77.4 g sample of water at 89.0°C. What will be the final temperature of the water?
*March 14, 2013*

**math **

If i have a piece of pipe that is half a yard long and it's divided into 5 pieces what is the length of each piece in yards?
*February 13, 2013*

**home economics**

mention the types of disposal of fullness?
*February 7, 2013*

**Math 8 -HELP! (PLZ!)**

1. Write the fraction two-fourths as a percent. Round to the nearest hundredth of a percent where necessary. (1 point) 50% 20% 54% 48% 2. Write the decimal 0.041 as a percent. (1 point) 41% 4.1% 410% 0.41% 3. In the small country of Varia, a bill becomes law only if thirty-...
*January 22, 2013*

**science**

What can engineers do to help buildings survive in an earthquake?
*January 17, 2013*

**Grammar**

No the correct answer is My parents and I are jumping.
*January 17, 2013*

**Grammar**

That is wrong it should be My parents and I.
*January 17, 2013*

**Science**

7/10 Thank you so much.
*January 17, 2013*

**Science**

1/4 is that right
*January 17, 2013*

**Science**

YEs but i am confused what would the answer be?
*January 17, 2013*

**Science**

no thats what i need help with!
*January 17, 2013*

**Science**

WHat would the fraction be Miss SUe
*January 17, 2013*

**Science**

Name a dormant volcano?
*January 17, 2013*

**Science**

WHat fraction of the earth is covered in water? Forgot my science book HELp
*January 17, 2013*

**Science math**

Thank you both very much.
*January 7, 2013*

**Science math**

Suppose a laboratory has a 38 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of polonium-210 occur in 1104 days? How much polonium is in the sample 1104 days later?
*January 7, 2013*

**math**

The table below shows the rates for parking a car in a parking lot. According to the pattern shown in the table, how much would it cost to leave a car in the lot for 2 full days? ~TABLE~ 1 hour: $1.00 2 hours: $1.75 3 hours: $2.50 4 hours: $3.25 A. $36.00 B. $36.25 C. $36.50 D...
*December 30, 2012*

**mathematics**

1. If $ is defined for all positive numbers x and y by x$y = 3x + 8y - y^3, then 10$2 = A. 38 B. 102 C. 14 D. 20 2. If & is defined for all positive numbers w and z by w & z = 15wz - 10w + 2 then 3 & 4 = A. 67 B. 77 C. 142 D. 152 3. All of the following are in the domain of f(...
*December 30, 2012*

**science**

help on the moon
*December 18, 2012*

**science**

u have 2 make a cool rhyme.if u like rap then rap it.Trust me i learned that in 6th grade.Its really easy.
*December 18, 2012*

**math**

A student completed 44% on a test. He completed 22 question. Then how many questions are on the test
*December 17, 2012*

**Genetics 7th**

female is dominant
*December 13, 2012*

**3rd grade language**

circle when the word means your doing something ex:running/action/verb.
*December 11, 2012*

**Pysics**

A wooden bucket ﬁlled with water has a mass of 59 kg and is attached to a rope that is wound around a cylinder with a radius of 0.071 m. A crank with a turning radius of 0.29 m is attached to the end of the cylinder. What minimum force directed perpendicularly to the ...
*December 7, 2012*

**Pysics**

A mother and daughter are on a seesaw in the park. How far from the center must the 127 lb mother sit in order to balance the 49 lb daughter sitting 7 ft from the center?
*December 7, 2012*

**Math**

The difference between my digits is 7. When you divide me by the sum of my digits, the quotient is the sum of my digits. That makes me a perfect you know what! Which number am I?
*December 4, 2012*

**Math**

When you add the number of rows in my array to the number in each row, you get 15. My digits add up to 9. Which number am I?
*December 4, 2012*

**Math**

One of my factors is 5 more than another of my factors. My digits add up to 6. I am less than 50. Which number am I?
*December 4, 2012*

**Math**

If you count backward from me to divide me by 8, the sixth number you reach is 48. Which number am I?
*December 4, 2012*

**Math**

I am a perfect square that is 11 more than a perfect square and 13 less than a perfect square. Which number am I?
*December 4, 2012*

**Math**

I am divisible by four factors in addition to 1 and myself. I am 7 less than a number with a square array. I am less than 24. Which number am I?
*December 4, 2012*

**Calculus**

Consider a manufacturer whose total cost of producing x items is given by c(x)=10000+5x+1/9x^2. a. What is the average cost function A(x)= c(x)/x? b. How many items should the manufacturer produce in order to minimize average cost? c. What is the smallest average cost? d. Find...
*December 4, 2012*

**Nutrition**

What is the portion size of a #8 scoop?
*November 27, 2012*

**physics**

A tank of height H is filled with water and sits on the ground. Water squirts from a hole at a height y above the ground and has a range R. For two y values, 0 and H, R is zero. Determine the value of y for which the range will be a maximum. (Use any variable or symbol stated ...
*November 27, 2012*

**Physics**

What is the frequency of a sound wave in air at 20°C that has a wavelength of 0.4 m?
*November 27, 2012*

**Physics**

A 40,000 kg railroad car initially traveling at 10 m/s collides inelastically with a 20,000 kg railroad car intially at rest. The cars stick together. What is their final speed?
*November 19, 2012*

**Physics**

A 40,000 kg railroad car initially traveling at 10 m/s collides inelastically with a 20,000 kg railroad car intially at rest. The cars stick together. What is their final speed?
*November 19, 2012*

**Physics**

A 40,000 kg railroad car initially traveling at 10 m/s collides inelastically with a 20,000 kg railroad car intially at rest. The cars stick together. What is their final speed?
*November 19, 2012*

**Physics**

A crate with a mass of 40 kg is being dragged along a horizontal floor at a constant velocity by an applied force of 180 N. What is the coefficient of kinetic friction? (g = 10 m/s2
*November 9, 2012*

**help me plss**

>
*October 28, 2012*

**Physics**

Kr=1/2*(I*w^2) I=1/2*(M*R^2) w=(290*2pi)/60 Kr=1/2((290*2pi)/60)^2*(.5*8.0*10^4*1.8^2) Kr=~~~(whatever that equals my question was different just be glad i did this at all ahah) (this is all assuming you mean 10^4 and 290 is in rpm)
*October 23, 2012*

**English/Literature**

I have to write an essay, but I just need help with coming up with some ideas. In the essay, I have to compare/contrast the plays "Ajax" OR "Electra" (both are by Sophocles) with the "Iliad" (by Homer). I CANNOT mention similarities/differences in...
*October 23, 2012*

**Math(Algebra)**

If an arrow was shot at such an angle that for every second of travel a lateral change of 50 feet away from the archer was gained, how far away does the arrow land from cliff base?
*October 17, 2012*

**Math(Algebra)**

Thanks Steve
*October 5, 2012*

**Math(Algebra)**

An arrow is shot vertically upward from the top of a cliff 80 feet tall, with an initial velocity of 64 ft/s, (the acceleration due to gravity is -16ft/sec). a. Write the quadratic equation representing this scenario when h is 0. b. Find the roots (solutions) for this ...
*October 5, 2012*

**history**

C. Fifteenth Amendment
*October 5, 2012*

**Science**

A gun fires a shell at an angle of elevation of 30 degrees with a velocity of 2*10^3m/s. What is the horizontal and vertical component of the velocity? What is the range of the shell? how high will the ball rise
*September 29, 2012*

**algebra**

Pat had $3. He gets some money from his parents. He now has twice as much money as Dani. Write an expression to represent how much money Dani has. Tell what the variable represents.
*September 25, 2012*

**English**

The rain forest is very wet, it gets more than 80 inches of rain each year. Run on right?
*September 24, 2012*

**English**

fragment
*September 24, 2012*

**English**

Sentence
*September 24, 2012*

**English**

Thirty million different kinds of insects sentence run on or fragment
*September 24, 2012*

**English**

Sentence
*September 24, 2012*

**English**

THe tall trees block the blue sky? Sentence run on or fragment?
*September 24, 2012*

**ENglish**

fragment
*September 24, 2012*

**ENglish**

THree fourths of all plants and animals. Sentence run-on or fragment?
*September 24, 2012*

**English**

A rain forest is always green many plants grow there. Is this a fragment, run-on or complete sentence?
*September 24, 2012*

**Social Studies**

Name 2 Natural Resources and tell me how you can take care of them? How do people use them to make a living?
*September 23, 2012*

**social studies**

california
*September 23, 2012*

**social studies**

Central Valley what Cities are in that region? What can you find there, see or do, jobs and natural resouces that you might find ther. Why is that region great?
*September 23, 2012*

**Social Studies**

What is a human resource? Name some examples of human resources and how they help the world?
*September 23, 2012*

**social studies**

Name 2 Natural Resources? How can you take care of them? How do people use them to make a living?
*September 23, 2012*

**social studies**

Name 2 Natural Resources and tell how you can take care of them. How do people use them to make a living?
*September 23, 2012*

**Social Studies**

Which three countries makes up most of North America?
*September 20, 2012*

**English**

The total suprised us and pleased us. Is this right?
*September 17, 2012*

**English**

Combine each pair of sentences use and,but,or, to join the two predicates The total suprised us. The total pleased us.
*September 17, 2012*

**English**

Thanks
*September 17, 2012*

**English**

Would the answer be Ray baked and served cookies. the simple predicates would be baked and served.
*September 17, 2012*

**English**

Write each sentence pair. Underline the simple predicates then write a conjunction you could use to join them. Ray baked cookies. Ray served cookies.
*September 17, 2012*

**math**

i am less than one million.The number in the left most place is a 9. The numbers in each place to the right is 2 less than the previous number.I have no ones.What number am i?
*September 16, 2012*

**simple subject**

what is the simple subject in this sentence Jenna enjoyed working and Patrick enjoyed work.
*September 13, 2012*

**math**

i am a number less than 10.my hundreds digit is 3 more than my thousands digit,my tenths is 2 less than my hundreds and my ones is the sum of my tenths and hundreds digits.what number can i be?
*August 23, 2012*

**Maths**

What is the square root of:- a)6889 b)1681
*June 8, 2012*

**english**

How to make a sonnet poem with 10 syllables
*May 14, 2012*