Friday
April 18, 2014

Posts by shawn


Total # Posts: 474

Physics
A bolt is to be tightened with a torque of 8.0 N*m. If you have a wrench that is 0.35 m long, what is the least amount of force you must exert? the equation for this problem is t=Fr sinbeta, but the sin is not given What am I suppose to do?

Math
So after i do all that should i get one whole number

Math
What is the probability that a number chosen at random from the range 1,000,000,000 to 9,999,999,999 inclusive will contain ten different digits? Round your answer to the nearest millionth

Calculus
A rectangular box with a square base and top is to be made to contain 1250 cubic feet. The material for the base costs 35 cents per square foot, for the top 15 cents per square foot, and for the sides 20 cents per square foot. Find the dimensions that will minimize the cost of...

math
A rectangular box with a square base and top is to be made to contain 1250 cubic feet. The material for the base costs 35 cents per square foot, for the top 15 cents per square foot, and for the sides 20 cents per square foot. Find the dimensions that will minimize the cost of...

physics
A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.17 and the push imparts an initial speed of 4.1 m/s?

possessive nouns
A ____ kindness kept them alive another day. Is it A. strangers B. stranger's C. strangers' D. strangers's Is it b. stranger's

possessive nouns
____ Jews fled from the German soldiers. Is it A. Polands B. Poland's C. polands' D. Polands's Is it b. Poland's

possessive nouns
______ stories seemed unbelievable. Is it A. Survivors B. Survivor's C. Survivors' D. survivors's Is it b. Survivor's

possessive nouns
Many ____ stomachs were often empty. A. refugees B. refugee's C. refugees' D. refugees's Is it c. refugees'

possessive nouns
Soldiers carried several ___ cold rations. Is it A. days B day's C.days' D. days's My answer is c. days'

possessive nouns
Success often depended on the ____ food suply. Is it A. armies B. armie's C. armys' D. army's I say it is d. army's

possessive nouns
Is it b. soldier's

possessive nouns
A _____ shoes wore out quickly. Is it A. soldiers B. soldier's C. soliers' D. soldiers's

possessive nouns
I chose c because I thought I should make it plural. is the correct one is b. poland's

possessive nouns
Is it c. Polands'

possessive nouns
I think it is D. Polands's

possessive nouns
_____ Jews fled from the German solders. Is it A. Polands B. Poland's C. Polands' D. Polands's

possessive nouns
American ______ efforts helped win the war. Is it A. soldiers B. soldier's C. soldiers' D. soldiers's

Chemistry
What type of chemical reation is : Na + H2O---) NaOH + H2? The 2s are subscripts but I couldn't get it to type that way.

Social Studies
is there freedom in massachusetts

Ap Chemistry
Hydrogen gives off 120. J/g of energy when burned in oxgyen, and methane gives off 50. J/g under the same circumstances. If the mixture of 5.0 g of hydrogen and 10. g of methane is burned, and the heat released is transferred to 50.0 g of water at 25.0 degress Celsius, what fi...

physics
Is it possible for a car to move in a circular path in such a way that it has a tangential acceleration but no centripetal acceleration?

algebra (excel)
I am trying to create a forumla that will subtract two columns and in the third column tell me if the one column is greater than the other column by 10%. So far I have IF(AND(A:A-B:B>(10%)*(A:A)=TRUE),C2,"FALSE") which is giving me false for everything but I know ...

math
What is the greatest common factor of 102 and 214?

Social Studies
what are some of the challenges caused by immigration?

American History
1.True 2.A 3.B 4.D 5.A 6.True 7.c. 8.False 9.True 10False 11.A 12.True 13.True 14.D 15.A 16.C 17.False 18.C 19.True 20.true 21.C. 22.A. 23.B 23.B.

American History
1.True 2.A 3.B 4.D 5.A 6.True 7.c. 8.False 9.True 10False 11.A 12.True 13.True 14.D 15.A 16.C 17.False 18.C 19.True 20.true 21.C. 22.A. 23.B 23

Science
Why do non-polar substances tend to boil at relatively low temperatures?

english
how do you describe an authors writing style and structure?

math
18 inches is the answer to the first question because you must be 48 but you are only 30 now, you must grow 18 (48-30) 1,010 is the answer to the second question, 840+1,150=1990 but you can only eat 3,000-1,990 now which is 1,010 :)

psychology
1. The experimental rats were being raised in separate environments. One group lived in the traditional cage in a quiet, but well lighted room. They were supplied with plenty of food and water. The second group inhabited "Rat Disney Land." There were colorful to...

college precal
find all the values: sin2x- sqrt3cosx=0

sci/275
Review Ch. 5, The Flow of Energy Through Ecosystems. Then, complete Appendix C. · Post your response to the following: Identify the fruit or vegetable you selected and relate the second law of thermodynamics to the changes in energy observed in Appendix C. How di...

Algebra check
Where appropriate, include the approximation to the nearest ten-thousandth. 27.) log x = -3 I have the answer as 1 28.) 7 ^(4-9x)= 49 I have the answer as 2/9 29.) 8^x =5.2 not sure 30.) 1n x=5/8 not sure Are these answers right?

Algebra help
Thanks

Algebra help
State the domain and the range of each function. 22.) f(x)=e^x +3 the +3 is separated 23.) g(x)= 1n(x-1)

Math help
Okay x^2-4 = 4 x^2= 8 sqrt(x^2)= sqrt 8 x= 2.83 is this right?

Math help
Where appropriate, include the approximation to the nearest ten-thousandth. 31.) log(x-4)+ log(x+4)= log4 I have the answer as 4 Is this answer right?

Algebra help 2
27.) x=1 28.) I have x= 2/9 Not sure about the last two 29.) 8^x =5.2 not sure 30.) 1n x=5/8 not sure

Algebra help 2
Where appropriate, include the approximation to the nearest ten-thousandth. 27.) log x = -3 I have the answer as -3 28.) 7 ^(4-9x)= 49 I have the answer as 2 29.) 8^x =5.2 not sure 30.) 1n x=5/8 not sure Are these answers right?

Algebra Thanks
Thanks

Algebra help bobpursley
Where appropriate, include the approximation to the nearest ten-thousandth. 24.) 3^x= 1/81 I have x = 1/5 25.) logx 125 =3 I have x = 5 26.) log64 x = 1/2 I have x = 8 Are these answers right?

Algebra
Where appropriate, include the approximation to the nearest ten-thousandth. 24.) 3^x= 1/81 I have x = 1/5 25.) logx 125 =3 I have x = 5 26.) log64 x = 1/2 I have x = 8 Are these answers right?

Algebra
Where appropriate, include the approximation to the nearest ten-thousandth. 24.) 3^x= 1/81 25.) logx 125 =3 26.) log64 x = 1/2

Algebra help
State the domain and the range of each function. 22.) f(x)=e^x +3 23.) g(x)= In(x-1)

Algebra
actually the +3 is separte so it is f(x)= e^x +3 and the second problem is g(x)= In(x-1)

Algebra
State the domain and the range of each function. 22.) f(x)=e^x +3 23.) g(x)=1n(x-1)

Algebra help
Okay I got it log (8/3) = log 8 - log 3 = 2.079 - 1.099 = 0.98 log 24 = log (3x8) = log 3 + log 8 = 3.688 log 25 = log 5^2 = 2 log 5 = 2.138

Algebra help
If loga 8=2.079, loga 5=1.609, and loga 3=1.099, find the following? 19.) loga 8/3 is this 1.89? 20.) loga 24 Not sure 21.) loga 25 not sure how to do this

Algebra help
Thanks

Algebra help
Simplify: Note: The first letters next to log are the small letters. 16.) logr r 17.) logt t^4 18.) logb 1

Algebra help
Okay thanks

Algebra help
Express in terms of logarithms of a, b, and c: log(a^3b^2)/c How would I convert this?

Algebra help
Thanks

Algebra help
Find the formula for the inverse of each function. 4.) g(x)= (x+5)^3 I do not understand how to do this one.

Algebra check
Thanks

Algebra check
Convert to exponential equations. 12.) m=log3 9 I have the answer as 3^m =9 13.) log2 64=6 I have the answer as 2^6 =64 Are these answers right?

Algebra check Reiny
So then are these answers right? 10.) 4^-3 =1/64 I have the answer as log4 1/64 =-3 11.) 144^1/2 =12 I have the answer as log 144^12 =1/2

Algebra check DrBob222
I have a question the formula that I used was b^y=x means that logbx=y is this the correct formula? so using that formula I got the following. 4^-3 =1/64 I have the answer as log4 1/64 =-3 144^1/2 =12 I have the answer as log 144^12 =1/2

Algebra check
Thanks.

Algebra check
Convert to Logarithmic equations. 10. 4^-3 =1/64 I have the answer as log4 1/64 =-3 11. 144^1/2 =12 I have the answer as log 144^12 =1/2 Are these answers right?

Algebra inverse question
Hi Reiny, I just have one question for 4.) the problem is g(x)= (x+5)^3 how were you able to convert the equation to the following? let y = (x+5)^2 interchange x with y x = (y+5)^2

Algebra inverse
Find the formula for the inverse of each funtion. 3.) f(x)= 2x-5 for this one I have y= (x+5)/2 is this correct? 4.) g(x)= (x+5)^3 I am stuck on this one.

Thanks
Thanks

Algebra check Damon
Not a function but is it one to one?

Algebra check
Determine whether f(x)=x^2 is one to one. I have the answer as yes. Is this right

Algebra check
Determine whether f(x)=x^2 is one to one. When I substitute values in for x even when I use negative values x^2 will be positive so is it one to one?

Algebra help drwls
for f of g(x) I have -4x^2-10x-6 Is this right?

Algebra help
Find (fog)(x)and (gof)(x)if f(x)=x-x^2 and g(x)= 2x+3. Okay so I did the following: For f(of)g(x), take (2x+3) - (2x+3)^2 (insert g(x) where the "x" is in f(x) ) For g(of)f(x), take 2[x-x^2] +3 The first answer that I get for (2x+3) - (2x+3)^2 is -4x^2-12x-9 The seco...

Algebra help
Find (fog)(x)and (gof)(x)if f(x)=x-x^2 and g(x)= 2x+3.

Algebra word problem help
Thank you. I was able to get the same answers.

Algebra word problem help
The average walking speed R of people living in a city of population P,in thousands, is given by R=0.37InP+0.05, where R is in feet per second. a.) The population of Honolulu, Hawaii is 395,790. Find the average walking speed. b.) A city's average walking speed is 2.70 ft/...

6th geography kinda in a hurry
whoops i meant NYG to arizona not TN

6th geography kinda in a hurry
Number the rivers in the sequence the NY giants will cross them en route to the valley of the sun(Tennessee) Arkansas Delaware Hudson Illinois mississippi Missouri Ohio Rio Grande

6th geography
Yeah i have 2 more that i cant find: can you answer (or atleast help with) these questions- Number the rivers in the sequence the NY giants will cross them en route to the valley of the sun(Tennessee) And (the other question is much more important)what 5 states cover the area ...

6th geography
your a life saver

6th geography
what is the shallow part of the sea off the coast of Boston called?

Math Algebra check Thanks
Thanks

Math Algebra check please
Solve w= (va)/(r^2+a^2) for a. I applied the quadratic formula a= (v/w +- sqrt (v^2/w^2 - 4*(-wr^2)) /2 and I have the answer as a= (v+/- sqrt[v^2+4w^2r^2]/w is this right?

Math help
Did I find this out correctly?

Math help
Solve: x-(3/x)<0 is the answer(-infinity, -sqrt3)U(0,sqrt3) ?

MAth answer check
One solution of kx^2 +6x-k=0 is -3. Find the other solution I have the answer as -1/3 is this right?

Algebra problem
Which of the following points is an x-intercept of the graph of f(x)=(x^2+2x)^2 -11(x^2+2x)+24? a.)(4,0) b.)(-6,0) c.)(6,0) d.)(-4,0)

Math check please
Solve w= (va)/(r^2+a^2) for a. I applied the quadratic formula a= (v/w +- sqrt (v^2/w^2 - 4*(-wr^2)) /2 and I have the answer as a= (v+/- sqrt[v^2+4w^2r^2]/w

Math Help please answer
I have the answer as a= (v+/- sqrt[v^2+4w^2r^2]/w

Math Help please
Solve w= (va)/(r^2+a^2) for a. is the answer a= sqrt[w(r^2+v^2)/v]?

Math Algebra help
Solve w= (va)/(r^2+a^2) for a. is the answer a= sqrt[w(r^2+v^2)/v]?

Math Algebra check
Which of the following quadratic equations has -4 and 3/4 as the solutions? a.)x^2+(13/4x)-3 b.)x^2+(30/7x)-(25/7) c.)x^2+(30/7x)+(25/7) d.)x^2-(13/4x)+3 I substituted the values and I have the answer as (a.)

Math help
Which of the following quadratic equations has -4 and 3/4 as the solutions? a.)x^2+(13/4x)-3 b.)x^2+(30/7x)-(25/7) c.)x^2+(30/7x)+(25/7) d.)x^2-(13/4x)+3 I substituted the values and I have the answer as (a.)

Math help update Thanks
Thanks

Math help update :)
Thanks

Math help update
let f(x) = 12x^2 +7x-10. Find x such that f(x)=0 a.) -4/5, 5/3 b.) -5/4, 2/3 c.) -2/5, 5/3 d.) -5/3, 2/3 I think I have it. I was able to factor out 12x^2 +7x-10 to (4x+5) (3x-2)=0 The answer is -5/4 and 2/3 right?

Math answer check
Determine the type of number that the solutions of x^2 +5x+3=0 will be I have the answer as rational is that right?

Math help 2 answers
I think I have it I was able to factor out 12x^2 +7x-10 to (4x+5) (3x-2)=0 answer is -5/4 and 2/3 right?

Math help 2
let f(x) = 12x^2 +7x-10. Find x such that f(x)=0 a.) -4/5, 5/3 b.) -5/4, 2/3 c.) -2/5, 5/3 d.) -5/3, 2/3

Math help 2 update
Thanks just to make sure I have the problem as x^2+8x less than or equal to 9.

Math help 2
Solve: x^2 +8x </=9. How would I solve this?

Math help Thanks
Thank you so much

Math help
Solve: x^2 +5x=1. Use a calculator to approxiamte the solutions with rational numbers. is the answer -0.1925824, 5.65331193 ?

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