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November 23, 2014

Posts by SARA


Total # Posts: 3,784

precalculus
sorry about that squre root (10e^x) +3
January 11, 2012

precalculus
solve the exponential equation express in exact form only show all work. 2e^x= squareroot 10e^x +3
January 11, 2012

precalculus
solve the logarithm equation show work. log_7(x-8)- log_7(x-2)=1
January 11, 2012

precalculus
write the expression below as a single logarithm show work. ln(x-7/x^2+12x+36)-ln(x^2-49/x+6)
January 11, 2012

precalculus
use properties of logarithm to find the exact value of the expression. squareroot log_2/9(2/9)
January 11, 2012

pre-calculus
solve equation show work. log_2(x^2+47)=7
January 11, 2012

calculus
graph this function and determine the domain,range and vertical asymptote. f(x)=In(4-x) no need to graph just assist with points
January 11, 2012

math
graph the function below. Determine the domain, range, and horizontal asymptote. show work f(x)=(7/5)^(x-3)
January 11, 2012

math
verify that the function f and g are inverse of each other by showing f(g(x)) and g(f(x)) =x f(x)= 6-2/5x g(x)=15-5/2x
January 11, 2012

math
find the components f and g so that f og=H H(x) = (1/x+1)^15
January 11, 2012

math
Reiny, that is correct, but I cannot type the squareroot sign with my computer - how do I find the domain, of this function?
January 11, 2012

math
for the given functions f and g find f o g and state the domain show all work f(x)=sqrt x-3 g(x)=x^2-7x+9
January 11, 2012

Math
Suppose you have 100ft of fence to make a play area for your dog. Does a square or circle provide more area? What other factors might you take into consideration in designing your play area?
January 10, 2012

Math
A rectangular room measures 15ft by 21ft. How much will it cost to carpet this room if carpeting costs $17.95 per square yard?
January 10, 2012

precalculus
solve the following exponential equation. show all work. 4^(4x+2)= 1/64
January 9, 2012

precalculus
write the expression as a sum or difference of logarithms. express powers as factors show all work log4 sqrt pq/7
January 9, 2012

precalculus
solve the following equation show all work log4(x-4)= -1.
January 9, 2012

precalculus
given the function y=2-log(x) find domain, determine vertical asymptote and show work.
January 9, 2012

precalculus
the following function is one-to-one find its inverse. find domain and range of f and f^-1 show work f(x)=^3sqrt(x-3)
January 9, 2012

precalculus
use transformation to graph the following function - state domain, range and horizontal asymptote f(x)= e^5x.
January 9, 2012

precalculus
find the exact value of the following logarithm. Use the properties of logarithms show all work. log2 34-log2 17 (Those are little two's)
January 9, 2012

precalculus
log5 (x+3)= 1- log5 (X-1) where do I start?
January 9, 2012

algebra
your problem with the oil slick is very helpful but all I need is A of the oil slick as a function of the time t. the radius in feet of the spread after t hours is r(t)= 200sqrt t.
January 9, 2012

History
The Federal government has a lot of programs in place to hire the Natives and this is often run by the Bureau, however, if this is in place, why aren't these Indians getting the benefits. Who is swindling the money?
January 2, 2012

Cultural diversity
Sorry I have auto correct on my phone and I thought I changed it back but it was supposed to say.. swindling not swinging. Here is what is was supposed to say- The Federal government has a lot of programs in place to hire the Natives and this is often run by the Bureau, ...
January 2, 2012

Cultural diversity
The federal government has a lot of programs in place to hire the Natives and this is often run by the Bureau,however, if this is in place, why army the Indians getting the benefits? Who is swinging the money?
January 2, 2012

statistics
marbles come in 10 different varieties and there are 15 marbles in a pack.how many packs must a person buy in order to be sure of having at least 10 of one kind?
January 1, 2012

Biology - Evolution
Ms. Sue, i already searched on wikipedia but i couldn't able to find any information.
December 28, 2011

Biology - Evolution
In one sentence each, describe a) one positive effect of direct artificial selection b) one negative effect of direct artificial selection c) one negative effect of indirect artificial selection
December 28, 2011

Calculus
Calculate the height of a cylinder of maximum volume that can be cut from a cone of height 20 cm and base radius 80 cm , please help me
December 25, 2011

College Algebra
what is the domain of each of the following functions,their intercepts and thier range? f(x)=x+3 and f(x)=-2x-3 if x<-2 and x>=-2
December 20, 2011

math
Thank you : )
December 18, 2011

math
Michel wants to buy his mother handmade chocolates for Mothers Day. He has $15.oo to spend. The price of each chocolate is given below. Fudge $0.60 NutClusters $0.75 Truffles $0.80 a)create and solve an equation for each type of chocolate to determine how many Michel can buy ...
December 18, 2011

Math-Data Mangment
6(n+1P2)=3nP2
December 11, 2011

math/ algebra
how can i find the numbers Quadratic equation the sum of 2 whole numbers is 23. their product is 120. find the numbers
December 7, 2011

sri bhagwan mahavir jain college
22 grms of carbondioxide is produced in the reaction
December 6, 2011

Career planning
When considering a post-secondary option, you should consult which of the following sources?
December 6, 2011

statistics
A life insurance salesman sells on the average 3 life insurance policies per week. What type of this distribution is? (2 marks) Let in a given week, calculate probability of the salesman will sell, i. at least one policy. (2 marks) ii. from two to four policies. (3 marks) iii...
December 6, 2011

biology
its B
December 5, 2011

chemistry
How many moles of NH3 are produced from 48.5 g of H2?
December 5, 2011

chemistry
How many grams of N2 are needed to react with 125g of H2?
December 5, 2011

chemistry
How many grams of NH3 can be made from 375g of N2?
December 5, 2011

statistics
A study was made of 413 children who were hospitalized as a result of motor vehicle crashes. Among 290 children who were not using seat belts, 50 were injured severely. Among children using seat belts, 16 were injured severely (based on data from “Morbidity Among ...
December 3, 2011

physics
A stone tumbles into a mineshaft and strikes bottom after falling for 4.2 seconds. How deep is the mineshaft?
November 29, 2011

physics
A water balloon was dropped from a high window and struck its target 1.1 seconds later. If the balloon left the person’s hand at –5 meters/sec, what was its velocity on impact?
November 29, 2011

chemistry
what must be done with the radioactive waste materials that result from splitting atoms and how is this a problem?
November 14, 2011

Astronomy
The distance between the Earth and Mars when the two panets are at opposition varies greatly because of the large eccentricity of Mar's orbit. The perihelion distance of a planet is given by rmin=a(1-e)and the aphelion distance by rmax=a(1+e) where a is the semimajor axis ...
November 14, 2011

biology
another way to afect the enzyme is lowering the pH of the solution. However, lactase is supposed to be able to work in the stomack. Would lowering the pH of the enzyme solution affect the enzyme? Why or why not?
November 11, 2011

Western Civ
Help! Describe the evolutionary account of the emergence of Israelite religion paying particular attention to the ideas of covenant, law, prophets, morality, relations with Canaanite culture, and other themes you deem significant. Also explain how Jewish scripture was put ...
November 9, 2011

6th grade ELA
nnnnnnnoooooooooooooo
November 8, 2011

writing
Mother sewed fur jackets for Father and me
November 8, 2011

writing
how do you do that? that's what I dont get?
November 8, 2011

writing
is this a correct way to write this sentence Mother sewn fur jackets for Father and I, just in case the weather gets bad. thank you!
November 8, 2011

writing
its an exploration narrative journal im writing about seeing the grand canyon for the first time
November 8, 2011

writing
is there another way to rephrase this sentence in a good way. --- All I ever heard about this Grand Canyon thing was that it is piled up with humongous rocks and composed of fossils. thank you!
November 8, 2011

Calculus
Thanks Steve.
November 7, 2011

Calculus
Please help me with the following 2 questions. 1. Find the area of the curved surface of a right-circular cone of radius 6 and height 4 by rotating the straight line segment from (0,0) to (6,4) about the y-axis. 2. Use the Maclaurin polynomial of degree 4 to approximate sin(0....
November 7, 2011

math- precalculus
Help please! I can't seem to get x as the answer to prove that they are inverses of each other! Show what f and g are inverse functions algebraically f(x)= x-1/x+5 g(x)= -5x+1/x-1
November 4, 2011

Algebra 1
What is the answer to 10-3x is less than or equal to 7x? I tried the problem, but I keep getting x is less than or equal to 1. Is that right?
November 3, 2011

Math
8,9,11,14 , , ,
November 2, 2011

Statistics
Suppose that a sample of 50 scores has a mean of Y=90 and the standard deviation is 15. Between what two values of Y will at least 90% of the scores fall? What is the maximun number of scores that can lie out of the interval?
October 30, 2011

chem
Complete the table below: Note: Make simplifying assumptions, do not use the quadratic formula. What is the pH of the solution created by combining 11.80 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? Complete the table ...
October 28, 2011

chemistry
Complete the table below: Note: Make simplifying assumptions, do not use the quadratic formula. What is the pH of the solution created by combining 2.00 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? Complete the table ...
October 28, 2011

Math algebra
how do you do this by using the FOIL method? 1. 3x^2 + 22x + 7= 2. 2x^2 + 5x - 12= 3. x^2 - 11x + 28= thank you!
October 26, 2011

world history
3 contributions of fancois rabelais
October 23, 2011

geometry
line rs intersects line lm at p, angle rpl=x+y, lps=3x+2y, mps=3x-2y. solve for x and y find angle RPL, LPS, and MPS
October 23, 2011

geometry
line MN is perpendicular to op If the coordinates of M,N and O are (2,4), (-5,-8) , (-6,2) respectively, find the equation for line OP
October 23, 2011

geometry
what is the perimeter of triangleABC if the coordinattes of A,B and C are (3,7), (7,3) and (-2,5) respectively
October 23, 2011

Physics
A projectile is fired with an initial speed of 28.0 m/s at an angle of 65 degrees above the horizontal. The object hits the ground 9.5 seconds later. a) How much higher or lower is the launch point relative to the point where the projectile hits the ground? b) To what maximum ...
October 19, 2011

CALCULUS ONE!
The graph of sinx and cosx intersect once between 0 and pi/2. What is the angle between the two curves at the point where they intersect? (You need to think about how the angle between two curves should be defined).
October 18, 2011

Chemistry
You have 250 mL of a 0.80 M solution of silver nitrate AgNO3 (169.87 g/mol) dissolved in water. How many grams of AgNO3 does the solution contain?
October 17, 2011

philosophy
how did existentialism fail?
October 13, 2011

Chemistry
completely dissolved-KNO3, NaNO3, Pb(NO3)2 partially dissolved-KCl, KClO3, K2Cr2O3
October 11, 2011

Physics
Let vector A = 4i^ + 4j^, vector B = -2i^ - 5j^, and vector F = vector A - 5(vector B). a) Write vector F in component form. vector F = ? b) What is the magnitude of vector F? F = ? c) What is the direction of vector F? theta = ? Thank you!
October 10, 2011

Physics
Let vector A = 4i^ + 4j^, vector B = -2i^ - 5j^, and vector F = vector A - 5(vector B). a) Write vector F in component form. vector F = ? b) What is the magnitude of vector F? F = ? c) What is the direction of vector F? theta = ? Thank you!
October 8, 2011

H.W in Partial economy
Bundle** Oranges/Week ** Total Utility A 0 50 B 1 80 C 2 100 D 3 115 E 4 125 F 5 133 G 6 139 H 7 144 I 8 146 J 9 147 K 10 147 L 11 147 M 12 147 N 20 147 From the above table draw TU curve and MU curve find MU when using the fourth oranges, then derive the demand line
October 7, 2011

big lake
Two cyclists, 36 miles apart, start riding toward each other at the same time. One cycles 2 times as fast as the other. If they meet 2 hours later, what is the speed (in mi/h) of the faster cyclist?
October 6, 2011

Physics
Tim and Rick both can run at speed Vr and walk at speed , Vw with Vr > vw. They set off together on a journey of distance . Rick walks half of the distance and runs the other half. Tim walks half of the time and runs the other half. How long does it take Tim to cover the ...
October 5, 2011

grammar
need to know some examples for the nominative comparative and superlative of irregular words apart from good better best , bad worse worst and little less least
October 5, 2011

science
what is a machine?
October 4, 2011

us history
thanks!
October 3, 2011

us history
Im doing a crossword and im stuck on the last one. the topic is immigration and urbanization. 1. neighborhoods on the outskirts of a city..?
October 3, 2011

government
hey i need help in this question Is there ever a time where american citizens disagreed with the way the government is handling things in the past?
October 3, 2011

math
Allyson and Adrian have decided to connect their ankles with a bungee cord; one end is tied to each person's ankle. The cord is 30 feet long, but can stretch up to 90 feet. They both start from the same location. Allyson moves 10 ft/sec and Adrian moves 8 ft/sec in the ...
October 1, 2011

math
Hi
September 30, 2011

Math
Yes, it is the inverse hyperbolic sin.
September 29, 2011

Math
Let f(x)=sinh^−1(6x). Then f(x) can be written in the simplified form (Ax+B)/(sqrt(Cx^2+D). What are the values of A,B,C and D? Again, please show me how to do this. Thanks
September 29, 2011

Math
Let f(x)= (sqrt(25−x^2))+5 arccos (x/5). Then f(x) can be written in the simplified form − [(x+c)/mx+n)]^p. What are the values of c,m,n and p? Please tell me how to do this question. Thanks
September 29, 2011

help plesse :)
the answer is B
September 29, 2011

math
What is 6% sales tax on $2.59
September 29, 2011

math
A class of 25 students has 10 boys. Three boys have braces and 4 girls have braces. a) What is the ratio of boys with braces to boys in class? b) What is the ratio of girls with braces to girls in class? c) Which group has the largest ratio of students with braces to students ...
September 29, 2011

Calculus 2
The question is: Evaluate the improper integral for a>0. The integral is: the integral from 0 to infinity, of e^(-y/a)dy Can anyone help me solve this? When I try I get 'a', which apparently is incorrect. Thank you!
September 25, 2011

Chemistry
Thank you Doctor Bob this helped a lot i got the answer so i must have done something right :)
September 25, 2011

Chemistry
NO2 + NO = N2O3 Inital concentration 2.0, 2.0, 0 Change concentration , ,2.5 Equilibrium concent. , ,2.5
September 25, 2011

Chemistry
For the reaction NO2(g) + NO(g) = N2O3(g) If at particular temperature, K was 575 and equilibrium concentration of N2O3(g) was 2.5 M, calculate the equilibrium concentrations of NO2(g) and NO(g) if they both had the same initial concentrations. i have my table layed out like...
September 25, 2011

algebra
how do you substitute these system of equations 1.y=-3x-3 y=3x-3 2.y=4x-6 y=x thank you!
September 23, 2011

Language
b) Sketch d) crutch f) stretch That all i could get
September 22, 2011

Chemistry
I don't understand one of my homework questions i'm really stuck. please help! How will the equilibrium: Heat + CH4(g) + 2H3S(g)= CS2 (g) + 4H2 (g) be affected by the following: a) A decrease in temperature. b) The addition of H2. c) The removal of some CH4 (g) d) An ...
September 22, 2011

Chemistry
I don't understand one of my homework questions i'm really stuck. please help! How will the equilibrium: Heat + CH4(g) + 2H3S(g)= CS2 (g) + 4H2 (g) be affected by the following: a) A decrease in temperature. b) The addition of H2. c) The removal of some CH4 (g) d) An ...
September 22, 2011

algebra!
how do you solve this by substitution: step by step 1. 5x-y=16 5x+2y=13 2. 3x-3y=9 2x-4y=-16 3. x=-6y y=2/3x+5 thank you!
September 20, 2011

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