# find d/dx (integral from 2 to x^4) tan(x^2) dx tan(x^4)^2*4x^3 MY ANSWER

138,784 results, page 90-
## Physics

A 15 kg box is given an initial push so that it slides across the floor & comes to a stop. If the coefficient of friction is .30, A) Find the Ffr Fg=mg=Fg=15(9.8)=147N Ffr=mu(Fn)- Ffr=.3*147N=44.1N B)Find the acceleration. Hint: what is the net force as

*asked by Kayla on May 2, 2017* -
## probability

Let N,X1,Y1,X2,Y2,… be independent random variables. The random variable N takes positive integer values and has mean a and variance r. The random variables Xi are independent and identically distributed with mean b and variance s, and the random

*asked by juanpro on April 22, 2014* -
## Chemistry- Dr.Bob222

Predict the effect of decreasing the temperature on the position of the following equilibria. (a) H2(g) + Cl2(g) ↔ 2HCl(g) + 49.7 kJ My answer: shifts to the right (b) 2NH3(g) ↔ N2(g) + 3H2(g) ∆ H = 37.2 kJ My answer: shifts to the left (c) CO(g) +

*asked by Nevaeh on March 11, 2016* -
## Global science

Exponential growth is stopped when______equals. there are no choices and I don't hve an answer. I am learning about Growth and population.My science book is called Global science Earth/ environmental systems science by Kendall Hunt publishing company. It

*asked by Anonymous on November 1, 2010* -
## world history

I am writing a paper for school over winter break and this is one of the question i have to answer I really cant find anything on line so any help you could give would be great. what measures would it take to destroy and/or disrupt the infrastructure of

*asked by Kavin on December 23, 2008* -
## math

Suppose a certain economy's consumption function is as follows, where C(x) and x are measured in billions of dollars. C(x) = 0.76x1.1 + 18.19 Find the marginal propensity to consume (dC/dx) when x = 7. (Round your answer to three decimal places.)

*asked by beauty on October 15, 2012* -
## Algebra 2

Soo the equation is 25y^2-9x^2-200y-36x+139=0 and for the center is got (2,4) and the vertices I got (2,7) and (2,1) But i cant figure out how to find the slopes of the asymptotes and it wants the answer is reduced fraction please explain

*asked by Nancy on May 14, 2012* -
## math

Suppose a certain economy's consumption function is as follows, where C(x) and x are measured in billions of dollars. C(x) = 0.76x^1.1 + 18.19 Find the marginal propensity to consume (dC/dx) when x = 7. (Round your answer to three decimal places.)

*asked by tee on October 16, 2012* -
## Math

For a savings account paying 2.4% in which interest is compounded MONTHLY. FIND THE Time needed to double the initial investment of 10000 dollars. The answer is 28.9 years but WHY

*asked by Anonymous on December 8, 2014* -
## Anatomy

I can't find the answer in the paper my teacher gave me, hopefully you guys know it allready >_

*asked by Anonymous on November 2, 2007* -
## calculus

Use left endpoints and 9 rectangles to find the approximation of the area of the region between the graph of the function cos2x and the x-axis over the interval [0, pi/2] . Round your answer to four decimal places.

*asked by Kayla on December 6, 2012* -
## algebra

Find the ending balance in an account that opens with $6,000, earns 4.5% interest compounded quarterly, and is held for 10 years. (Round your answer to the nearest cent.)

*asked by Daniel on November 27, 2011* -
## ALGEBRA

Find the APR for the following loan (monthly payments). (Round your answer to the nearest full percent.) Purchase a refrigerator for $2,100 at 20% add-on interest for 3 years.

*asked by Mike on April 30, 2012* -
## MATH

Find the cost of a home in 20 years, assuming an annual inflation rate of 2%, if the present value of the house is $280,000. (Round your answer to the nearest cent.

*asked by TRAY on August 29, 2012* -
## Algebra

Estimate each of the following and then use a calculator to find the actual answer: a: 343+ -42 - 402 b: -1992 + 3005 - 497 c: 992 - -10,003 - 101 d: -301 - -1303 + 4993

*asked by KG on October 1, 2014* -
## math115

Please help You find an old savings bond that originally cost $50. It has been compounding 3% interest annually for the last 75 years. How much is it worth? Make sure you round your answer to the nearest cent.$459

*asked by margie o on October 25, 2009* -
## Trigonometry

Find all x such that 0< = x

*asked by John on October 23, 2013* -
## Calculus

Find the number a such that the line x = a divides the region bounded by the curves x = y^2 − 1 and the y-axis into 2 regions with equal area. Give your answer correct to 3 decimal places.

*asked by John on January 22, 2016* -
## Math

Please help You find an old savings bond that originally cost $50. It has been compounding 3% interest annually for the last 75 years. How much is it worth? Make sure you round your answer to the nearest cent.$459

*asked by margie o on October 25, 2009* -
## math

the perimeter of a rectangle is 270 meters. find its dimension if the width is 3/4 of its length.

*asked by jackson on July 3, 2016* -
## math help please

2. A teacher asks her class of 22 students, “What is your age?” Their responses are shown below. 19, 19, 14, 14, 16, 19, 19, 16, 16, 15, 17, 16, 17, 16, 15, 14, 15, 15, 17, 14, 16, 15 Find the mean, median, and mode for the data. If necessary, round to

*asked by Delilah on March 25, 2013* -
## Science

Why can humans not survive on Venus? Thank you for using the Jiskha Homework Help Forum. You will find 2 answers above under "Science." Since the volunteers do not sit here 24/7, a half hour is not long enough to wait for an answer.

*asked by Greg on June 5, 2007* -
## math

Find the accumulated amount A if the principal P = $3,000 is invested at the interest rate of r = 9% per year for t = 5 years, compounded annually. Please round your answer to the nearest cent.

*asked by Anonymous on October 15, 2012* -
## Technology

i'm not really sure about this answer, because i didn't find it in my book. i think i'm correct. please check: 10. A wrench uses the principle of a(n)__________ in its operation. a. lever b. inclined plane c. pulley d. wheel and axle B?

*asked by y912f on October 27, 2009* -
## Math/Conversions

Good afternoon, could someone please help me with this? The answer is 22 1/2 oz. Doctor instructs pt to drink 1 L (33 4/5oz) of water. An hour later you find 1/3 L left. How many ounces did Ms. White consume? This is what I keep getting. I think I may be

*asked by Anonymous on June 21, 2016* -
## math

Find the ending balance in an account that opens with $6,000, earns 6.5% interest compounded quarterly, and is held for 20 years. (Round your answer to the nearest cent.)

*asked by Anonymous on December 17, 2012* -
## Geometry

Find the missing numbers for the dimensions and measures of a rectangular prism... Length ? Width 2.5 m Height 4.6 m Surface Area ? Volume 172.5 m to the third power Please answer the one's with a ?. Thank you.

*asked by Susie on December 9, 2013* -
## Physics

An object is moving in the x-direction at 1.3 m/s when it undergoes an acceleration a=0.50j^m/s2. Question: find its velocity vector after 4.0s. Express your answer as a comma-separated pair of components.

*asked by Medz on March 26, 2018* -
## ALGEBRA

Find the ending balance in an account that opens with $5,000, earns 7.5% interest compounded quarterly, and is held for 20 years. (Round your answer to the nearest cent.)

*asked by Demie on May 28, 2012* -
## statistics

A police department reports that the probabilities that 0, 1, 2, and 3 burglaries will be reported in a given day are 0.50, 0.41, 0.05, and 0.04, respectively. Find the standard deviation for the probability distribution. Round answer to the nearest

*asked by darius on August 29, 2007* -
## ANOTHER SCIENCE

I cannot find this one. Intertidal communities that are constantly battered by the waves may be as, or more, productive than the world's ______ _____ The answer is rain forests. I answered my own question. Thanks nice one!=)

*asked by Meg on May 30, 2007* -
## us history

I was working on a US History crossword worksheet titled The English Colonists Arrive. I am trying to find the answer to the sole right to trade in an area. This wksht is due tomorrow.

*asked by JJ on September 10, 2009* -
## ALGEBRA

Find the ending balance in an account that opens with $5,000, earns 7.5% interest compounded quarterly, and is held for 20 years. (Round your answer to the nearest cent.)

*asked by Demie on May 27, 2012* -
## Algebra/ A.S.A.P

Need help. I want to cut an extremely long problem that I just solved however I am trying to find out how -1.9 = -0.02t equals T= 93.0??? I tried dividing, multiplying and subtracting -1.9 and 0.02 together. 93.0 as the final answer was also rounded to the

*asked by Candy on November 27, 2010* -
## statistics

A police department reports that the probabilities that 0, 1, 2, and 3 burglaries will be reported in a given day are 0.50, 0.41, 0.05, and 0.04, respectively. Find the standard deviation for the probability distribution. Round answer to the nearest

*asked by tang on August 29, 2007* -
## math- statistics

If the probability of a dancing lady accepting an initation to dance is 0.18, find the expected number of ladies you would have to ask before one accepts. I think that the answer is: 1(.18)+2(.18)+3(.18)...7(.18)+8(.18)+9(.18)=8.1 *round answers to three

*asked by Sherri on December 15, 2008* -
## algebra 2

Two cards are randomly drawn from a standard deck without replacing the card after the first draw. Find the probability of drawing a spade followed by a heart. Please type your answer as a fraction.

*asked by Thomas on May 21, 2010* -
## MATH

Find the cost of a home in 20 years, assuming an annual inflation rate of 4%, if the present value of the house is $285,000. (Round your answer to the nearest cent.)

*asked by DEE on February 25, 2012* -
## math,orrection

is this correct now.. Problem #1 Find the simple interest assume a 360-day year. Round result $17000 at 9%for 119 days. answer: 5619.44

*asked by student on June 29, 2007* -
## ALGEBRA

Find the ending balance in an account that opens with $5,000, earns 7.5% interest compounded quarterly, and is held for 20 years. (Round your answer to the nearest cent.)

*asked by Danny on May 27, 2012* -
## calc

Find the number a such that the line x = a divides the region bounded by the curves x = y^2 − 1 and the y-axis into 2 regions with equal area. Give your answer correct to 3 decimal places.

*asked by Anonymous on June 14, 2015* -
## social studies

The right to __________ is not one of the ethical guidelines for research specified by the APA. A. financial compensation B. informed consent C. privacy and confidentiality D. avoidance of deception I cannot find the answer to this question.

*asked by clara on September 28, 2012* -
## law

can someone please help me to understand what I am looking for to answer this question and where to find the information. examine how criminal justice responses to crime may be shaped by these theories (Differential-Association and the Rational Choice).

*asked by Patiance on September 29, 2013* -
## math

Find the ending balance in an account that opens with $5,000, earns 2.5% interest compounded quarterly, and is held for 5 years. (Round your answer to the nearest cent.) $ 1

*asked by Anonymous on August 21, 2012* -
## SEARCH AND RESCUE TRAINING

Please check my answer thanks :) An individual SAR team's mission is to A. clear the area and search for clues. B. camp out in the woods. C. help other teams. D. find the missing person. I said C

*asked by Mallie on January 12, 2009* -
## planning & implementing for the environment

Purchasing equipment that has multiple uses can A. be more accessible to the children. B. make less work for staff. C. cut costs and encourage creative play. D. be easier to find. My answer is A

*asked by Amanda on October 16, 2014* -
## Geometry

Find the missing numbers for the dimensions and measures of a rectangular prism... Length ? Width 7 m Height 5 m Surface Area 214 m to the second power Volume ? Please answer the one's with a ?. Thank you.

*asked by Jacob on December 6, 2013* -
## 7th Grade Math

Find the total amount of money that Jeff will have in his savings account after 3 months if his initial deposit was $945 with a 4.5% interest rate. I have no idea what the answer is. Please explain.

*asked by Missy on October 2, 2008* -
## Calculus

Find the critical numbers of the function. (Use n to denote any arbitrary integer values.) f(θ) = 12 cos θ + 6 sin2θ My answer was pi/2 and 3pi/2, but those were wrong. I don't understand the 'n' part, either.

*asked by Callie on November 9, 2015* -
## Geometry

Find the cost of sod, at $0.49 per square foot, for a playing field that has a semi circle on each end with the radius of 8ft. Show work. Answer: $325.83

*asked by Sabrina on March 13, 2018* -
## Social studies

The histories of kishi and Egypt are intertwined with each other because they were reliant on each other. How did their interdependence work, and why did each take control of the other in turn? Please help I cant find the answer in my book and I have

*asked by Pumpkin spice on November 5, 2018* -
## Colonies in the wilderness

How did the British Govnt react to the ninety-two resolutions? This is one question which has stumped me, I cant seem to find the answer. I had that it replied bak with ten resoultions not accepting the rights of the assembly...not sure...

*asked by Sara on February 17, 2011* -
## Social Studies

Describe the role of shariah in Islam. What types of laws would one expect to find within Islamic governments, and how are they enforced? This was one of my questions on my homework, and I can't figure out a solid answer to it. Thank you!

*asked by Sarah on December 3, 2015* -
## US History

Evaluate the evidence presented by Rice and Rockefeller. What light do they shed on the Robber Baron Industrial Statesman debate? I can't find the answer in my book, so any help is appreciated. Please and thank you!

*asked by Alex on January 13, 2014* -
## social studies

The election of _____ was the only time in American history when the U.S. political system essentially collapsed. a. 1800 b. 1836 c. 1860 d. 1896 e. 1912 I do no know the answer, please tell me where to find it.

*asked by Anonymous on October 8, 2010* -
## Physics

The speed of a point on a rotating turntable, which is 0.172 m from the center, changes at a constant rate from rest to 0.531 m/s in 2.19 s. At t1 = 1.9 s, find the magnitude of the tangential acceleration. Answer in units of m/s2.

*asked by JRD on June 16, 2011* -
## accounting

Find the ending balance in an account that opens with $9,000, earns 4.5% interest compounded quarterly, and is held for 5 years. (Round your answer to the nearest cent.)

*asked by jackie on August 26, 2012* -
## ALGEBRA

Find the ending balance in an account that opens with $3,560, earns 3.5% interest compounded monthly, and is held for 15 years. (Round your answer to the nearest cent.) =

*asked by Urgen please help on June 14, 2012* -
## Math (Trig Identities)

I am currently working on a problem relating to trigonometric identities and I seem to be stuck. The question wants me to find sin(x/2) when cosx = -(12/13) in the interval (pi,3pi/2). I know that the eventual answer will be 5/sqrt26, however, I am not

*asked by Kathryn on March 27, 2018* -
## History

How did the Phoenicians’ willingness to travel far for trade eventually lead to the spread of their civilization? can someone please link me a website so i can find the answer? I've been working on this test for hours, and I'm ready to get it done :/

*asked by Vixen - Connexus on October 3, 2018* -
## ALGEBRA

Find the APR for the following loan (monthly payments). (Round your answer to the nearest full percent.) Purchase a refrigerator for $2,100 at 20% add-on interest for 3 years.

*asked by Monic on May 19, 2012* -
## help!!!

Dangling Modifiers If your baby does not like cold apple juice, it should be heated. Your answer: 1. Dangling Modifiers When they are fresh, eating oranges can often keep away the cold virus. Your answer: 2. Predication Our plans for tomorrow should begin

*asked by Jen on December 15, 2006* -
## Propagating error

Find the absolute and percent relative error for each calc. b) 81.5 (+/- 0.5) x 40.2 (+/- 0.2)/ 21.8 (+/- 0.2) my answer for absolute error was 150. +/- 200, which is outrageous. Can someone show how they would do it so I can compare and find my mistake?

*asked by Chris on September 17, 2006* -
## physics (electricity)

note: E is for exponetial two large horizontal, parallel metal plates are 2.5cm apart in air and the upper is maintained at a positive potential relative to the lower so that the field strenght between them is 2.1x10E3vmE-1 the potential difference between

*asked by matrix school 2 on August 8, 2009* -
## Math Help!

Find 21/25 of $27,000 A:$32,140 B:$5,670 C:$22,680 D:$23,760 Could you explain how it is C?? A new law requires that 12% of an individual's income be invested in the stock market. Your accounts show that you need to put $420 in the stock market this year.

*asked by @CrEaM@ on January 4, 2018* -
## Physics

For parts A-C: /^Vo | 2M | velocity into pg. ->R )2m ) ------ top view rear view A car of mass, 2m, is going around a turn at a constant radius, R, with velocity, v0. The turn is not banked – it is a flat surface. Assume the car and the road are on

*asked by Greg on April 6, 2013* -
## Physics

A scuba diver must decompress after a deep dive to allow excess nitrogen to exit safely from his bloodstream. The length of time required for decompression depends on the total change in pressure that the diver experienced. Find this total change in

*asked by Marie on July 3, 2012* -
## maths

An arithmetic progression has 10 terms. Sum of the 10 terms is 220. Sum of the odd terms is 100. Find the first term and common difference. pl give me the answer. maths - Steve Monday, July 17, 2017 at 12:11pm 10/2 (2a+9d) = 220 5/2 (2a+4*2d) = 100 maths -

*asked by kumar on July 19, 2017* -
## Chemistry AP

Hey Bob, What is the pH at the point during a titration when 20 mL of 0.200 M HCl has been added to 30 mL of 0.0500 M NH3 solution? HCl is strong acid, Kb = 1.8 × 10−5 for NH3. Answer in units of pH. I've gone about getting the mmol of HCl and NH3,

*asked by Ethan on February 21, 2015* -
## PHYSICS *_* HELP PLEASE

A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 6 g. Find the reading of the

*asked by MIKE on January 25, 2013* -
## physicss

A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 /6 g. Find the reading of the

*asked by MIKE on January 25, 2013* -
## PHYSICS!!!!HELP PLEASE

A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 /6 g. Find the reading of the

*asked by MIKE on January 25, 2013* -
## math

find the standard deviation for the following: 8,5, 12, 8, 9, 15, 21, 16, 3. There is a formula but our teacher wants us to do it a specific way. For example, 47, 41, 32, 53, 57. First you find the mean, which is 46 and then subtract it with each number in

*asked by sarah on December 8, 2013* -
## Math Help

A brewery's filling machine is adjusted to fill bottles with a mean of 31.5 oz. of ale and a variance of 0.003. Periodically, a bottle is checked and the amount of ale noted. (a) Assuming the amount of fill is normally distributed, what is the probability

*asked by Tom614 on June 12, 2013* -
## Math

A brewery's filling machine is adjusted to fill bottles with a mean of 31.5 oz. of ale and a variance of 0.003. Periodically, a bottle is checked and the amount of ale noted. (a) Assuming the amount of fill is normally distributed, what is the probability

*asked by Tom 6 on June 14, 2013* -
## Check Answers PLEASE

Paula asked 30 students what they ate for lunch. All the students had at least a sandwich, salad or fruit. ********************************* QUESTION A Draw a Venn Diagram. * * * * * * * * * * * * * * * * * THIS IS THE INFORMATION FROM THE DIAGRAM: 5

*asked by Daniela on April 6, 2017* -
## Maths

Paula asked 30 students what they ate for lunch. All the students had at least a sandwich, salad or fruit. ********************************* QUESTION A Draw a Venn Diagram. * * * * * * * * * * * * * * * * * THIS IS THE INFORMATION FROM THE DIAGRAM: 5

*asked by Daniela on April 6, 2017* -
## English

Can you please answer my question? I posted the question before.But nobody gave an answer. It is middle of the Jiskha Homework Help Forum page. Where it says: NAME:KHUSHI SUBJECT:INTERESTING FACT AND CHRISTMAS JUST CLICK ON IT, THEN YOU WILL SEE MY

*asked by Khushi on December 24, 2006* -
## Physics

Two lifeguards pull on ropes attached to a raft. If they pull in the same direction, the raft experiences a net external force of 365 N to the right. If they pull in opposite directions, the raft experiences a net external force of 132 N to the left. Draw

*asked by Eren on November 4, 2013* -
## Math

Can someone correct them 5) Write fraction as a percent 7/8 My answer: 0.875=87 1/2% 6)Write each decmal as a percent 0.008 My answer:8% 7) Write as a decimal 160% My answer:1.60 8)Write as a fraction 52% My asnwer:5/10 5) Write fraction as a percent 7/8

*asked by Jasmine 20 on November 24, 2006* -
## Civics

what would prevent your state from making a new law that took away your voting rights from anyone who did not own their own home? Establishment Clause Incorporation Doctrine (correct answer) protected speech right to petition I need to know why the correct

*asked by the person who needs help on October 23, 2018* -
## Math 7th Grade

1. which is a rule that describes the translation of point from (-5, 4) to (-1, 2) A (x,y) --> (x - 4, y - 2) B (x,y) --> (x + 4, y - 2) (my answer) C (x,y) --> (x + 4, y + 2) D (x,y) --> (x - 4, y + 2) 2. the ordered pairs (2, -17) and (5, -35) are

*asked by Jarrod on April 23, 2015* -
## Math

1. which is a rule that describes the translation of point from (-5, 4) to (-1, 2) A (x,y) --> (x - 4, y - 2) B (x,y) --> (x + 4, y - 2) (my answer) C (x,y) --> (x + 4, y + 2) D (x,y) --> (x - 4, y + 2) 2. the ordered pairs (2, -17) and (5, -35) are

*asked by Jarrod on April 23, 2015* -
## PHYSICS` HELP!! Please

Really lost on how to explain these whether true or false!! HELP! Much appreciated Write True or False. If False, Explain why! 1. In a position vs. Time graph, a line whose slope is negative represents an object that is slowing down. Answer: I circled True

*asked by Deanna on January 6, 2016* -
## Physics

A truck on a straight road starts from rest and accelerates at 2.8 m/s^2 until it reaches a speed of 16 m/s. Then the truck travels for 16s at constant speed until the brakes are applied,stopping the truck in a uniform manner in an additional 3.6 s. How

*asked by Isaac on September 10, 2014* -
## Physics-Conservation of Momentum

3. A train loaded with steel, moving at 90km/h, collides head on with a stationary train of mass 6000kg. if the trains couple after collision and move forward with a velocity of 80km/h, find the mass of the train loaded with steel. My work so far: PTO=PTF

*asked by Danielle on January 8, 2016* -
## Physics

A cyclist approaches the bottom of a gradual hill at a speed of 20 m/s. The hill is 4.4 m high, and the cyclist estimates that she is going fast enough to coast up and over it without peddling. Ignoring air resistance and friction, find the speed at which

*asked by Zach on February 26, 2008* -
## Science. NEED HELP PLEASE

Can someone check if these are right: Tell the reaction rate 1.)Question: one antacid tablet is placed in a glass of cold water, while another table is placed in a glass of hot water. Answer:TEMPERATURE 2.) Question: a mixture of baking powder, flour,

*asked by Kalie on January 15, 2014* -
## Science

Can someone check if these are right: Tell the reaction rate 1.)Question: one antacid tablet is placed in a glass of cold water, while another table is placed in a glass of hot water. Answer:TEMPERATURE 2.) Question: a mixture of baking powder, flour,

*asked by Kalie on January 15, 2014* -
## Technology (Correct please)

(1) In what stage does publishing occur? A- first B- second C- third D- final ~~~~~~~~~~~~~~~~~ My answer is D- final ~~~~~~~~~~~~~~~~~ (2) Publishing can include multimedia or multiple communication methods. Some types of multimedia are images, video, and

*asked by Yuno Gasai on January 6, 2016* -
## Algebra problems

I have some problems that I would like checked please. Find and simplify the difference quotient f(x+h)-f(x)/h, h can not equal 0 for the given functions. 1. f(x)=x^2+3x+9- I got 2x+h+3 Evaluate the piecewise function at the given value of the independent

*asked by Soly on September 6, 2007* -
## Physics- grade 12

A ramp leading up to a loading platform is 3 m long and 1 m high at its highest point. If the friction is ignored, what work is needed to slide a 600-kg crate up the ramp at a constant speed? a) 2.00 *10^2 J b) 5.89 *10^2 J c) 1.80 *10^3 J d) 5.88 *10^3 J

*asked by Dani on March 13, 2012* -
## commercial advertising

why are more and more advertising commercials animated?? ny answer: To catch the viewers attention. They are funny and colorful because the average person would probably not pay attention to a bland black and white commercial with no theme song or color.

*asked by 12-year-old-poet on February 4, 2012* -
## Chemistry

1. The reaction, CO(CH2COOH)2 CO(CH3)2 + 2CO2, follows first-order kinetics and has an activation energy of 96.6 kJ mol-1. At 293 K, k = 0.133 s-1. Find the temperature (in K) at which half-live will be 0.00692 min? Round your answer to 3 significant

*asked by Kyo on November 19, 2010* -
## chem

given PCl5(g)+heat PCl3(g)+Cl2(g) a. addition of cl2 answer : would shift to the left b. increase in pressure: answer: ? c. removal of heat answer: ? d. Removal of PCl3 as it forms answer: ? please help! thanks!

*asked by hello on March 27, 2012* -
## math help

The perimeter of triangle RXA is 39, PX=49 and AP=9.Find RX and RA. I think it's under triangle bisector theorem. Help me answer this guys. Thanks.

*asked by jude on February 15, 2015* -
## Calculus

Find the intervals on which x^2/(x-3)^2 is decreasing. a. (0,6) b. (0,3), (3,6) c. (-inf,0), (6,inf) The critical numbers are x=0 and 6, but since there is an asymptote at x=3, I'm not sure whether a or b is the answer.

*asked by Anonymous on October 31, 2017* -
## Algebra

I need help step by step please I keep getting a wrong answer of 252? Find the 24th term in the expansion of (a + b)^ 25

*asked by Selena on August 11, 2015* -
## College Math

The average urbanite walks about 2 yd per second. A) How many seconds would it take to go 100yd? B) How may seconds would it take to go 440yd? Not sure how to go about to find the answer.

*asked by Carol on August 20, 2012* -
## Math

Find the variance for the given data. Round your answer to one more decimal place than the original data. {8.5, 4.5, 8.8, 6.9, 5.3}

*asked by Anonymous on November 8, 2009*