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Posts by Jack

Total # Posts: 1,773

Calculus
The manager of a large apartment complex knows from experience that 90 units will be occupied if the rent is 360 dollars per month. A market survey suggests that, on the average, one additional unit will remain vacant for each 9 dollar increase in rent. Similarly, one ...

Math
what is g(f(x))? and f(g(x))? if f(x)=(1)/(sqaure root3x) and g(x)=x^2-5 Thanks!

Chemistry
How much volume(mL)of 2.50 M NaOH(aq)must be added to 25.0 mL of water to produce a 1.50 M NaOH solution? Thanks!

math
meg has 20 pet stickers to go on a page 1/4of them are dog stickers 1/2of them are cat stickers the rest are rabbit stickers how many rabbit stickers does she have?

College Algebra
ln(8x+3)=ln11

science
An aluminum bar is 2m long at a temperature of 20 degrees C What will be the length of the bar at a temperature of 100 degrees C

physics
FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths for these signals. largest___m smallest___m

math
3 sqrt-64x^3

@elena
i noticed you helped a lot of people with their questions with physics ? can you hep me out please ? In putting, the force with which a golfer strikes a ball is planned so that the ball will stop within some small distance of the cup, say 2.00m long or short, in case the putt ...

h.s. physics
In putting, the force with which a golfer strikes a ball is planned so that the ball will stop within some small distance of the cup, say 2.00m long or short, in case the putt is missed. Accomplishing this from an uphill lie (that is, putting the ball downhill, ) is more ...

h.s physics
a baseball pitcher throws a baseball with a speed of 38m/s. estimate the average acceleration of the ball during the throwing motion,. in throwing the baseball, the pitcher accelerates the ball through a displacement of about 3.5 m from behind the body to hthe point where it ...

h.s. physics
a baseball pitcher throws a baseball with a speed of 38m/s. estimate the average acceleration of the ball during the throwing motion,. in throwing the baseball, the pitcher accelerates the ball through a displacement of about 3.5 m from behind the body to hthe point where it ...

English 7 Help! - please read
I think it just means she had a close relationship with the tree house. Like parents often have a soft spot or close relationship with their children. I don't know what story you're talking about, but basically I'm guessing the Tree house was like a get away spot ...

math
What is the square root of pi?

english
Hi I have to compare Mending Wall by Robert Frost to modern day time. I was thinking about comparing it to a song or movie, but I'm not sure of any. Do you have any ideas?

Statistics
disk error

math plz help
how would you determine the number of diagonals in a regular 41-gon ?

Probability
Service time, T, at an auto center has a Weibull distribution with parameters θ=3.7 and β=1.35. What is the probability that at least 8 of the next 10 customers will have to wait more than 4.69 hours? What is the expected number of customers that will have to wait ...

Math
Hmmm well I certainly didn't want them to write a complex essay for me, just some a little help and some ideas. It's whatever though.

Math
I asked a question earlier: Identify and discuss 4 key actions taken by the U.S. Government between 1790 to 1820 that established long term policy in the U.S. Please help me answer this, thank you so much. and I got this response:Please note that we don't do students' ...

social
What were 3 groups that were in motion around the U.S. in the 19th century. Why did they change locations and how did this impact their lives?

ACT
Any practice online for ACT, PSAE or sample questions.Please To much stress.

geometry
A sandpit in the shape of a rectangular prism has length 7 feet, width 5 feet, and height 1.75 feet. It is filled to the brim with sand. Joe puts this sand into a second sandpit having the same shape but a larger base. He needs 17.5 cubic feet of sand to fill the extra space ...

history (urgent)
Identify and discuss 4 key actions taken by the U.S. Government between 1790 to 1820 that established long term policy in the U.S. Please help me answer this, thank you so much.

math
what is the volume of a triangle prism with a base area of 24ft*2 and a height of 18ft

physics
A vertical tube with a tap at the base is filled with water, and a tuning fork vibrates over its mouth. As the water level is lowered in the tube, resonance is heard when the water level has dropped 18 cm, and again after 54 cm of distance exists from the water to the top of ...

spanish
yo me

spanish
Yo ______ lavo ______ manos y ______ cara. ______ cepillo ______ dientes y ______ cepillo ______ pelo. Yo ______ pongo ______ ropa.

chemistry
draw amino acid.

History
Explain what does Robert.e.Lee says to his son in letter.

History
Explain what does Robert.e.Lee says to his son in letter.

statistics
Consider a random sample of 37 students, and consider the number who graduate in six years. . Find the probability that 20 students in the sample graduate in six years

physics
A 4.0 kg object is lifted 1.5 m. (a) how much work is done against the earth's gravity ? (b) repeat if the object is lowered insteadof lifted

critical thinking test AU
1. Question : The average height of members of the high school basketball team is six feet, three inches. Jerry is on the high school basketball team, so Jerry must be taller than six feet. The argument above is flawed because it confuses: Student Answer: 4 CORRECT an average ...

math
2 feet/ hour

math
Please help

math
1- writing to explain- why might you need to measure a perimeter with a measuring tape instead of a ruler? 2- how are a ruler, a yardstick, and a measuring tape the same? how are they different? i don't 1 answer and i try 2 answer please check is it right or not 2) a ruler...

math
2- A ruler a yardstick and a measuring tape are the same because they can measuring items. A rule a yardstick and measuring tape different because they can't measuring the same length. i don't know 1 answer please help me and i want to know number 2 is right or not

math
i don't this answer please help

math
please help

math
1-writing to explain- why might you need to measure a perimeter with a measuring tape instead of a ruler? 2-how are a ruler, a yardstick , and a measuring tape the same? how are they different?

3 grade english
thank you very much

math
my uncle said 85 meter come in answer

math
A park has the shape of a trapezoid. Two of the sides are 25 meters long. The other two sides are 40 meters and 20 meters long. What is the perimeter of the park my answer is 110 meters

Maths- Trigonometry
4. A,B and C are points on a horizontal plane. A is 75 m from C on a bearing of 210 degrees and the bearing of B from C is 120 degrees. The bearing of B from A is 075 degrees. From A the angle of elevation of the top T of a vertical towel at C is 42 degrees. Find a. the ...

english
Ms. Sue help me last night and then i write again something then nobody help me

english
i just wanted to know how did you do # 9 because in the word their no SM word is only wr,kn,st,mb,and gn their no word like SM so please check again and i make (#9 GNASH) i just want to which i did it right or not rest of all correct yes or no

english
i don't #5

english
1-write wrote written 2-knight knob knit 3-listen wrestler whistle 4-thump comp plumber 5-gnaw 6-wreath 7-doorknob 8-plumber 9-knash 10-thimble 11-whistle 12-starled 13-crumb 14-wrinkle 15-knock

english
consonant patterns wr,kn,st,mb,gn directions read each word and idenify the consonant pattern with the silent letter. on the lines,write two more words that have the same silent consonant pattern. underline the consonant pattern in each word you write. 1- write _______ ...

math
a rectangle has a length of 5 yards and a width of 3 yards. what is its perimeter? explain your answer.

history
could you please give me any information about houses in hot dry countries

Math
What is the function rule for 0,31 1,27 2,23 3,19

math
I have no idea

physics
If the coefficient of kinetic friction between tires and dry pavement is 0.800, what is the shortest distance in which an automobile can be stopped by locking the brakes when traveling at 25.7 ?

maths
10 pencils in each packet 46 pencils how many packets are needed

statistics
1.25

ASHFORD
Identify two distinct fallacies you see committed in the media.

Algebra 2
2^(3x+1)=2^)2/x) I don't know what to do here to get both of the xs

chem
Balance the equation and answer in terms of moles. Chlorine gas can be produced commercially by passing an electric current through a con-centrated solution of sodium chloride (brine). The unbalanced equation is NaCl(aq) + H2O(`) ! NaOH(aq) + Cl2(g) + H2(g) . If the brine ...

Math
Addition But When it's [ (x)^2 ] ^1/2 you can put a negative value under the square in this case besides that you change the powers ex : (-8)^2/3 that means [ (-8)^2 ] ^1/3 and you can write it as [ (-8)^1/3 ] ^2 * for (^1/3) you can put a negative value the answer in both...

Math
+ h^20 Explanation : [(x)^a]^b = (x)^(a)(b) = (x)^ab But Be Careful when it's like [ (x)^(1/2) ] ^2 where (^1/2) is the square root and you can't put a negative value under a square root

Calculus
any constant 1 , 0 , 2 , pi , square root its derivative = 0 so dy/dx x^2+y^2= sqrt(5) 2 x x' + 2 y y' = 0 [x' = 1] 2x + 2yy'=0 ] /2 x + yy' = 0 y' = - x/y

Calculus
1) you find y' (dy/dx) (f'(x)) 2) replace each x by a which equal to one f(x) = (x+1)^1/2 f'(x) = 1/2 (x+1)^-1/2 (1) f'(x) = 1 / 2(x+1) f'(0) = 1/ 2(0+1) = 1/2 = 0.5

algebra
i think you mean x^2 - 7x - 8 = (x-8)(x+1)

Calculus (Antiderivatives)
((x-2)(x+2) / (x-2) ] / (x-2) int x+2 = 1/2 x^2 + 2x + c

Calculus
f'(x) = 6x - 5 / 2 sqrt(3x^2-5x+7) f'(2) = 12 - 5 / 2 sqrt ( 12-10+7) = 7 / 2 sqrt (9) = 7/ 2*3 = 7/6 = 1.16666

math
The plane is at least 500 miles closer to chicago than to denver

Mathematics
It's still really confusing. >o< My type of problems: **8x(squared)/35y(squared)/x(squared)+4x+3/x(squared)-1 **4a(squared)/ab/a(squared)-5a+6/a(squared)-2a **1+1/a / 1-1/a

Mathematics
Can someone explain to me how to solve complex fractions as if I didn't know anything about Algebra? I really need the help, thanks. :) It's not like this is the question of my homework, I just don't understand how to solve complex fractions from the start . . .

Calculus
Find dy/dx for f(x)= (1+x)^(1/x)

Calculus
Find dy/dx for (e^xy)+ x^2 +y^2=10

Calculus
Find the inflection points of f(x)=(x^2-6x-5)e^x

Calculus
Integrate from e^2 to e of tthis funtion: 1/(x)ln(x) dx

Calculus
Find integral of (x^3-6x-20)/(x+5) dx

Calculus
Find the relative extrema of f(x)= x/ln(x)

Calculus
The rate at which iPads are sold is R(t)=1000000x2.8^t where the units of R(t) are millions/year and represents time in years such that the year 2010 (Jan 1 2010 through Dec 31 2010) corresponds to t=0. How many iPads will be sold in the three year period Jan 1, 2012 through ...

math
it takes a skier 30 seconds to ski down the 1st mountain to the second mountain that is 40 feet above ground. it takes the skier 6 seconds per foot to slide down. how many feet above ground is the 1st mountain?

statistics
.096

math
The sum of two numbers is 10.The sum of their squares is 52.Find the numbers.

Math
Find two consecutive positive integers such that the square of the smaller increased by 4 times the larger is 64.

french
can anyone unscramble the letters please.... rtepasn, ipocne, liflmae

math problem solving
Alana has 7 children and brought a $9.95 shirt for each of them. The cashier charged her an additional $13.07 in sales tax. She left the store with $7.28. How much money did Alana start with?

physics
Car: a(t)=0.5 v(t)=0.5t s(t)=0.25t^2 all of this information is found from taking the integral of 0.5 and since the integral of the acceleration function is v(t)=0.5t+v(initial) we just substitute the initial velocity with 0 because it's 0. Same thing with initial the ...

maths
the perimeter of a rectangle is 12 c.m and its length is 4 c.m . what is its width? and the area?

maths
the area of a rectangle is 12 square c.m and its length is 4 c.m what is its width?

maths
what is the area of a rectangle of length 6 c.m and width 3 c.m ? what is its perimeter/

maths
a owns a rectangularers compound of length 40 meters and width 25 meters what is the area of this compound in ares

Math
Evaluate the given indefinite integrals. ∫ (x+2)(2x+3)^1/2

math
I used a program to draw a circle inside a triangle using height = 3 radius and it was fit !

math
Prove that the least height (h) of a triangle contains a circle of radius (r) is h=3r

Math
How do you solve 2(15a-3)=10a-46

math
a * b = 30 .....1 a - b = 7 ..... 2 a = 7 + b ......3 (7+b)(b)=30 b^2+7b-30=0 (using quadratic formula) b = -10 or b = 3 a = -3 or a = 10

Thermodynamics
Determine the units of viscosity,m, in the following equation: t=m(du/dy), where t is a shear stress, u a velocity, and y is a distance in (a) the Engineering English system, and (b) the SI system.

UOP
o test the hypothesis that students who finish an exam first get better grades, Professor Hardtack kept track of the order in which papers were handed in. The first 25 papers showed a mean score of 77.1 with a standard deviation of 19.6, while the last 24 papers handed in ...

math
Hi would you please show how to know if the function is differentiable or not ? please show me the answer with examples

math
Hi I Have A Question About Rolle's Theorem Why We cant solve [ F(x) = abs(x) ] ? *abs = absolute

Finance
A court has ordered Security Enterprises to pay 200000 in two years and 500000 in five years. In order to meet this important liability, they wish to invest in a combination of two-year 10% par-value bonds with annual coupons and five-year zero-coupon bonds. Each of these is ...

geometry
1. a 2. d 3. d 4. b 5. d The final score is 5/5 (100%). I know it is correct because I got them all right. I hope that helps. :)

Math
thanks

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