Friday
July 25, 2014

Posts by SARA


Total # Posts: 3,596

precalculus
analyze the graph of f(x)=(x+3)x-1)^2 x and y itercepts; end behavior; and maximum number of turning points

precalculus
have to graph the following piecewise function stating values for f(0) and f(-2) {-x-2 if x<=-1 f(x)={3 if -1<x<=1 {2x+5 if x>=2

precalculus
drwls, I should have told you that I do the work myself and with your answers, I confirm what I've done or prove I know nothing--Thanks for your time.

precalculus
another one where I need points to graph please. f(x)=(7/5)^(3-x).

precalculus
I have the problem 2e^x = squareroot(10e^x) +3. the solution must be in exact form only.

precalculus
I'm sorry, started a new job and have put in a lot of hours for training - must have forgotten that you replied.

precalculus
how would I find points to plot a graph for the function f(x)=ln(4-x)?

precalculus
sorry about that squre root (10e^x) +3

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

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

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

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

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

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

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

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

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

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

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

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?

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?

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

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

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

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

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)

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

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)

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

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.

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?

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, howeve...

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?

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?

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

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

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

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

math
Thank you : )

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 w...

Math-Data Mangment
6(n+1P2)=3nP2

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

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

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....

biology
its B

chemistry
How many moles of NH3 are produced from 48.5 g of H2?

chemistry
How many grams of N2 are needed to react with 125g of H2?

chemistry
How many grams of NH3 can be made from 375g of N2?

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 Pediatri...

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

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?

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

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 ...

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?

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 toge...

6th grade ELA
nnnnnnnoooooooooooooo

6th grade ELA
nnnnnnnoooooooooooooo

writing
Mother sewed fur jackets for Father and me

writing
how do you do that? that's what I dont get?

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!

writing
its an exploration narrative journal im writing about seeing the grand canyon for the first time

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!

Calculus
Thanks Steve.

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....

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

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?

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?

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 b...

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 bel...

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!

world history
3 contributions of fancois rabelais

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

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

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

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 ...

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).

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?

philosophy
how did existentialism fail?

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

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!

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!

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

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?

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 di...

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

science
what is a machine?

us history
thanks!

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..?

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?

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 dir...

math
Hi this is gay

math
Hi

Math
Yes, it is the inverse hyperbolic sin.

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

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

help plesse :)
the answer is B

math
What is 6% sales tax on $2.59

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 ...

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!

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

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