Wednesday
August 20, 2014

Posts by ann


Total # Posts: 1,207

Pre-Cal Help Please!!
Use logarithms to solve the given equation. (Round the answer to four decimal places.) 6(1.02^3x + 1) = 11 How do i find the answer after 1.03^3x +1 = (11/6) Do i put a log on 1.03 or do I do something else Thank you.
February 28, 2012

Chemistry
At 25°C, K = 0.090 for the following reaction. H2O(g) + Cl2O(g) equilibrium reaction arrow 2 HOCl(g) Calculate the concentrations of all species at equilibrium for the following case. 1.3 mol pure HOCl is placed in a 1.6 L flask [HOCl]________ [Cl2O]________ [H2O]________ ...
February 27, 2012

Pre-Cal
I meant to say 3000e^ 0.33(15) and got $62593.57
February 25, 2012

Pre-Cal
A website is offering a savings account that pays 33% compounded continuously. How much interest would a deposit of $3,000 earn over 15 years? (Round your answer to the nearest cent.) I used f(t)=Pe^rt and got 1000e^-0.045t I don't know what I did wrong. Thank you.
February 25, 2012

Algebra: Help Please
For the given function, compute the missing values in the following table. f(x) = 8x i got the negatives wrong, but I know how to solve for it. Is there a reason it is wrong? -3: -1/512 -2: -1/64 -1: -1/8 (^These were wrong, but I don't know how to solve it) 0: 1 1: 8 2: ...
February 23, 2012

math
Joes electric made 19 customer calls last week and 24 calls this week, How many calls must be made next week in order to maintain an average of at least 21 calls per week for the three week period?
February 22, 2012

Math
The equation V=1/3 Bh gives the volume V of a pyramid, where B is the area of the base and h is the height. Solve this equation for B. Please help me and show your work thanks
February 16, 2012

algebra please ck.
joe wants to spend 70. dollars at most and has 60 cu inches of space left in his soldier's care package. candy costs $7 and takes up 3 cu inch of space phone cards cost $5. and take up 15 cu in. of space. Is this correct? if not please change it or tell me how ??? thanks ...
February 16, 2012

algebra
would you please check my work and make changes for errors? thanks ann problem: joe bought 3- topping sundae for 15.25 and a 5 topping sundae for 17.75. write and solve a system of linear equations to find price of each topping and a plain sundae(no toppings). I wrote: x + 5y...
February 13, 2012

algebra
Bob, thank you very much for your help. ann
February 12, 2012

algebra
please check and correct if needed. thanks problem: you have coupon of $50 off your telephone purchase of $100 or more at bell store. a. write a function relating phone purchase price after coupon, y, to the retail price, x . give the domain of this function i wrote y => (...
February 12, 2012

algebra
would you please help me answer this question??? thanks mary wants to spend $70. at most for gifts but only has 60 cubic inches of space in her suitcase. rings cost $7 and take up 3 cubic inches of space and scarfs are $5 and take up 15 cubic inches. Write a system of four ...
February 11, 2012

math
You want to make a rectangular model one cube high exactly 2 and only 2 ways. How many cubes would you use?
February 9, 2012

geometry
You have 17 connecting blocks and you make a rectangular shape one block high. How many ways can you do it?
February 9, 2012

algebra
please check my problem and make changes as needed. thanks solve ineqality: 3/7(2p-14) > 6/7p-6 Clear fractions mult. by 7/1 3(2p-14) >6p-6 6p - 42 > 6p - 6 6p - 6p -42> 6p - 6p - 6 0 -42 +42 > -6 +42 0 > 36
February 8, 2012

macroeconomics
Suppose that there are three beachfront parcels of land available for sale in Asilomar and six people who would each like to purchase one parcel. Assume that the parcels are essentially identical and that the minimum selling price of each is $600,000. The table below reflects ...
February 8, 2012

algebra
thank you so much for your help reiny. ann
February 7, 2012

algebra
please check and correct thanks Problem: solve and check the inequality if possible |4F+8|< 12 positive: negative: |4F+8| < 12 |4F + 8| < -12 4F + 8 -8 < 12 - 8 4F +8-8 < -12-8 4F < 4 4F< -20 F < 1 F< -5 solutions 1 and -5 or -5 < F < 1 check ...
February 7, 2012

algebra
thank you very much for your help, anonymous. thanks ann
February 7, 2012

algebra
please check answers and change if wrong thank you. The absolute value of 3 times a number x is greater than 33. |3x| > 33 3x > 33 x > 11 what about -11
February 7, 2012

intro to busines
what are ome of the operations management practices that can help bring manufacturing back to U.S.?
February 6, 2012

algebra
reiny thank you very much for your help, i mistyped the = so you have it right. i really appreciate your help. ann
February 6, 2012

algebra
please check these answers and change if needed. thank you Label each statement true or false, if false change underlined portion. C. if -4 < -2t + 6 < 10 then this is underlined 2 > t + 6 > -5 I marked false, i think it should be -2 < t < 5. D. If |y + 8| + ...
February 6, 2012

Math
Find approximations of the given value f(x)={4; 4>x {x^2 2<x a)f(-6) b)f(0) c)f(2) d)f(4) e)(f(6) − f(4))/(6 − 4) I don't understand how to solve this problem. Thank You.
February 5, 2012

algebra
thank you very much for your help. ann
February 5, 2012

algebra
please could you check my answers and fix them if needed? label each statement true or false . if false correct the underlined portion A. if 3 < x then this underlined 3 + y<x+y i put true B. if this underlined |w-7|< -3 then w - 7 > -3 or w - 7 < 3 I put true ...
February 5, 2012

macroeconomics
Suppose that France and Denmark both produce oil and olives. Frances’s opportunity cost of producing a crate of olives is 4 barrels of oil, while Denmark’s opportunity cost of producing a crate of olives is 7 barrels of oil. By comparing the opportunity cost of ...
February 5, 2012

algebra
thank you very much for your help anonymous ann
February 5, 2012

algebra
i did not get a response so i am rewording question . please help if you can. thanks ann store A charges 9.75% tax store B charges 7.25% tax If a shopper's pre tax receipt is between $11.57 and $81.43, write a compound inequality that describes the difference in taxes paid...
February 5, 2012

Physics help
A skier approaches the base of an icy hill with a speed of 11.6 m/s. The hill slopes upward at 24° above the horizontal. Ignoring all friction forces, find the acceleration of this skier (a) when she is going up the hill, (b) when she has reached her highest point, and (c...
February 4, 2012

law
it is ADVANCED FUNERAL ARRANGEMENTS,the advance directives is really the individual having made medical decisions prior to an event happening which rendered the person from being able to make a decision at the immediate moment.funeral arrangements are not the doctors concern.
February 3, 2012

algebra
please help me with this question. gives line graph with 0 to 2 1/2 marked. problem: store A charges 9.75% tax and store B charges 7.25%. if shoppers's pre-tax receipt is between $11.57 and $81.43, write and graph a compound inequality that describes the difference in ...
February 2, 2012

algebra
thank you so much for your help reiny. i really appreciate it.ann
January 30, 2012

algebra
could you please help me? john needs to earn $693 to pay for trip. he finds job that pays $7 per hour and he mows lawns for $9. an hour a. write an inequality describing his goal in terms of hours at his job, x, and hours mowing lawns, y . i wrote 7x + 9y = 693., is this ...
January 30, 2012

algebra
thank you very much Jai for taking the time to help me ann
January 28, 2012

algebra
could you please check my answer and show me correct way . thanks for your help solve the equation if pssible -3|6n-2| +5 = 8 note:: 6n-2 is abolute value 6n-2 is positive -3|6n-2| + 5 = 8 |6n-2| = 6 6n - 2 = 6 6n - 2 +2 = 6 + 2 divide by 6 n = 8/6 6n-2 negative -3|6n-2|+ 5...
January 28, 2012

Chemistyr
Why must the limiting reactant be used to determine the theoretical yield?
January 22, 2012

English
Yeah put kitchen staff
January 22, 2012

algebra
Reiny, thank you very much for your help. ann
January 20, 2012

algebra
could you please check this answer for me and correct. thanks given equation point slope form linear equation to use to do question. y-3 = 3(x+1) question rewrite this equation in standard form y- 3 + 3 = 3x - 3x +3 + 3 -3x+ y = 6 collect all variables on one side and ...
January 20, 2012

algebra
factor 80x5th power -360x3rd power + 405x
January 20, 2012

physics
PLEASE HELP ME SOLVE !!!! InMay 1998, forest fires in southernMexico and Guatemala spread smoke all the way to Austin. Those fires consumed forest land at a rate of 26900 acres/week. On the average, how many square meters of forest are burned down every minute? An acre is an ...
January 20, 2012

algebra
Steve thank you so much. ann
January 16, 2012

algebra
please help me here with a and b and do i have c and d correct?, i do not know how to start. john put his spare change in jar every night. If he has $11.09, at end of Jan. . 22.27 at the end of feb, 44.35 in April, 75.82 in july, 89.00 in aug. and 114.76. a. at the end of oct...
January 16, 2012

College Chem
Thanks DrBob222 :)
January 16, 2012

College Chem
A 2.446-g sample thought to contain only one volatile substance, MgCO3, was heated in a nitrogen atmosphere for 30 min. After cooling, the residue weighed 2.216 g. Calculate the percentage of magnesium carbonate in the sample.
January 16, 2012

algebra
thanks for your help very much steve.
January 16, 2012

algebra
given point slope form linear equation to use in answers y-3=3(x+ 1) a.What is equation in standard form of a parallel line that passes through (0, -2)? y = 3x -2 -3x + y = -2 b. on parallel line find the ordered pair where x = -2? would it be -2.0 if not what about? -2, -8 -3...
January 16, 2012

algebra
could you see if my answers are correct?? if not could you please help me get them right? thanks very much A train leaves a station at noon. train is 180 miles from its destination at 12:45 pm and 90 miles from its destination at 2:15. how far is station from destination?225 ...
January 13, 2012

English
so it would be this way: Everyone has a need to feel accepted and cared about, and it is family and friends that play a vital role in an individual’s lifestyle choices
January 13, 2012

English
would that be better: Everyone has a need to feel being accepted and cared about, and it is family and friends that play a vital role in individual’s lifestyle choices
January 13, 2012

English
Is this sentence grammatically correct? ''Everyone has a need to feel accepted and being cared about and it is family and friends that play a vital role in individual’s lifestyle choices.''
January 13, 2012

algebra
thank you so much for your help Henry, I really appreciate it. Ann I understand now where I went wrong. first mistake i made was using positive 1/3 and then it was downhill from there.
January 12, 2012

algebra
Could you please help me?? point-slope form linear equation y-3 = 3(x+1) what is the equation in standard form of a perpendicular line that passes through (5,1). i think you take 1/3 as slope, reciprocal, I am confused about how to proceed. I know you put variables on one side...
January 12, 2012

algebra
thanks for your help. i really appreciate it. ann
January 11, 2012

algebra
could you please see if i have correct answers thanks very much use the point-slope form linear equation y-3=3(x+1) a. slope is 3 b. point this line passes thru that is basis of this equatio y = 3 x = -1 c. rewrite this equation in slope-intercept form y = mx+b y-3=3(x+1) y-3+...
January 11, 2012

physics
A child and sled with a combined mass of 59.0 kg slide down a frictionless slope. If the sled starts from rest and has a speed of 3.40 m/s at the bottom, what is the height of the hill?
January 9, 2012

algebra
please help me find error: f(1) = 1/3 -4/3(1) =1/3 - 4/3 = - 3/3 = -1 should -1 be +1 or is there no error thanks note i reduced question from posting about 10 am this morning.
January 6, 2012

algebra
thank you very much,
January 6, 2012

algebra
please help me find error: f(1) = 1/3 -4/3(1) =1/3 - 4/3 = - 3/3 = -1 should -1 be +1 or is there no error thanks note i reduced question from posting about 10 am this morning.
January 6, 2012

algebra 1 function question
given functions f(x) = 3x-5 and g(x) = 1/3 - 4/3x correct the error g(-3) = 1/3 - 4/3(3) = 1/3-4 = - 3 2/3 error i believe is 3 should be -3 so g(-3) = 1/3 - 4/3(-3) 1/3- (4/3 times -3/1) = 1/3 -( -12/3)= 1/3 +12/3 = 13/4 = 4 1/3 other one: f(1) = 1/3 - 4/3(1) = 1/3 - 4/3 = -3...
January 6, 2012

Math
The sides of a rectangle are in the ratio 2:5. The perimeter of the rectangle is 70cm. What is the Width of the the rectangle.
January 4, 2012

calculus
The derivative of f(x) = x^4/3 - x^5/5 attains its maximum value at x=
December 28, 2011

math
The derivative of f(x) = x^4/3 - x^5/5 attains its maximum value at x =
December 27, 2011

physics
A girl throws a slingshot pellet directly at a target that is far enough away to take 0.9 s to reach. How far below the target does the pellet hit? m How high above the target should she aim? m
December 21, 2011

physics
i need help w part b and c A proton is released from rest in a uniform electric field of magnitude 388 N/C. (a) Find the electric force on the proton. magnitude N direction (b) Find the acceleration of the proton. magnitude m/s2 direction (c) Find the distance it travels in 2....
December 20, 2011

physics
Two 4.0-g spheres are suspended by 9.0-cm-long light strings (see the figure). A uniform electric field is applied in the x-direction. If the spheres have charges of −3. 10-8 C and +3. 10-8 C, determine the electric field intensity that enables the spheres to be in ...
December 20, 2011

algebra
Thank you very much for explaining it to me. I am taking my first algebra course and I am having a difficult time in undestanding my text. You made this so clear. I really appreciate it. thanks Ann
December 16, 2011

algebra
please is this correct? write a direct variation equation that relates atoms of O oxygen to atoms of hydogen H Mary combined 8 atoms of hydrogen and 4 atoms of oxygen to get 4 molecules of water is this equation correct? O + 2H = WM
December 16, 2011

algebra
thank you drwls and damon, i really appreciate you help. ann
December 16, 2011

algebra
I posted this question earlier but I think I asked for too much so I am trying again and giving the answer I have, If you could tell me if it is correct, I would appreciate it. A sub is 7500 meters below sea level surfaces at rate of 80 meters per min. the depth of sub after m...
December 16, 2011

algebra
submarine is 7500 meters below, surfaces at rate of 80 meters per min. depth of sub after m minutes is given by d(m) = -7500 + 80m a. please give range for this function i thought -7500, is this correct? thanks b. make a table for graphing this function/ do not know how c. ...
December 15, 2011

geometry
For triangle ABC, if A is 52 degrees, B is 88 degrees, and C is 40 degrees, is AB the longest side
December 12, 2011

physics
A dockworker loading crates on a ship finds that a 20 kg crate, initially at rest on a horizontal surface, requires a 73 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 50 N is required to keep it moving with a constant ...
December 7, 2011

physics
The distance between two telephone poles is 59.0 m. When a 1.00 kg bird lands on the telephone wire midway between the poles, the wire sags 0.200 m. draw a free-body diagram of the bird. (do this on paper. your instructor may ask you to turn in this work.) how much tension ...
December 7, 2011

biology
thanks thats what i thought since he looked at where they lived water for fish and whale. thanks a lot ann
December 6, 2011

biology
Aristotle's system of classification, which 2 animals would be grouped together? A, seagulls and lizards B.seals and bats c. snails and butterflies d. whales and fish thanks
December 6, 2011

biology
thank you cam for your help.
December 6, 2011

biology
mammals are most closely related t : A, amphibians B. birds C. arthropods tks.
December 6, 2011

NEED HELP drawing a visual for this question
red-blue-purple = 4-3-2. red =160; blue = 120; purple -= 80. New total 560. Red has increased from 160 to (add 75% = 120) 280. Extra blue is 200 - 120 = 80. Total blue = 120 + 80 = 200. Blue as percentage of red = (200/280)x100 = 71.4%
December 6, 2011

calculus
what is the derivative of log3(x+X^2) log with base 3 i cant figure it out
December 5, 2011

algebra
thank you so much Henry, i really appreciate your help.
December 4, 2011

algebra
I made a typing error on last post so I thought I would try again . thanks for your help. Use the percent equation to answer the following. solve the percent equation for b. percent equation is a= p% . b i saw in text it set up as cross products a/b = p/100. I thought about ...
December 4, 2011

algebra
thanks, my typing let me down it should be solve for b
December 3, 2011

algebra
use the percent equation to answer the following. solve the percent equation for h percent equation is a/b=p/100 thanks
December 3, 2011

algebra
thank you ms Sue , i put that percent equation back on from yesterday, that was all the info given.
December 3, 2011

algebra
solve the formula for the indicated variable solve the volume of a rectangular prism v=lwh, for h
December 3, 2011

algebra
please help solve the percent equation for b. thanks
December 2, 2011

algebra
please write algebraic equation and solve thanks length of movie projected at 24 frames per second ; length(L)=24 f. solve for f
December 2, 2011

algebra
thank you
December 2, 2011

algebra
Please rewrite the following equation so that y is a function of x. 3x+18y=36 thanks for your help.
December 2, 2011

algebra
please help me write a complete algebraic solution thanks problem 18. mike, alex, olivia ran for the office of president of their senior class . of the 400 votes cast, olivia received 38% of the votes and michael received 116 votes. A. What % of the votes did michael receive? ...
December 2, 2011

algebra
please help me put this in algebra equation? baseball regular season =162 games after playing 54 of them team a has 28 wins . A. how many wins will team have at end of season, 54/162 = 1/3 so I know answer is 28 x 3 = 84 wins B. what is % of games won by team so far this ...
November 23, 2011

algebra
tks Reiny, i am having problems with these equation set-ups.
November 23, 2011

algebra
please help me write algebraic equation/ solution if membership for local zoo is $135, members do not pay admission but they are charged $3. to park . non-members admission is $25. for the zoo and $5. for parking. After how many visits have members and non-members paid the ...
November 23, 2011

psychology
choose three or four of the recommendations for happiness that you have practiced in your life.
November 21, 2011

psychology
Im doing a powerpoint on the pursuing happiness need so help on how to go about working on it
November 21, 2011

Physics
A 64.1-kg athlete leaps straight up into the air from a trampoline with an initial speed of 7.4 m/s. The goal of this problem is to find the maximum height she attains and her speed at half maximum height. Write the general equation for energy conservation and solve for the ...
November 21, 2011

physics
Help. Can someone provide a formula. ty The electric motor of a model train accelerates the train from rest to 0.540 m/s in 35.0 ms. The total mass of the train is 685 g. Find the average power delivered to the train during its acceleration.
November 21, 2011

physics2ndquestion
the consumption of natural gas by a company satisfies the empirical equation V= 1.5t + 0.008t^2 where V is in volume in millions of cubic feet and t is the time in months. rewrite the equation in unit of cubic meter nd seconds. put the proper units on the coefficients. assume ...
November 21, 2011

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