Saturday
April 30, 2016

# Posts by samantha

Total # Posts: 1,571

1. Evaluate: lim x->infinity(x^4-7x+9)/(4+5x+x^3) 0 1/4 1 4 ***The limit does not exist. 2. Evaluate: lim x->infinity (2^x+x^3)/(x^2+3^x) 0 1 3/2 ***2/3 The limit does not exist. 3. lim x->0 (x^3-7x+9)/(4^x+x^3) 0 1/4 1 ***9 The limit does not exist. 4.For the ...
October 7, 2013

math
The sales, in millions of dollars, of a laser disc recording of a hit movie t years from the date of release is given by: S(t) = (5t)/(t^2 + 1) a) Find the rate at which the sales are changing at time t. b) How fast are the sales changing at the time the laser discs are released?
October 6, 2013

1. Evaluate: lim x->infinity(x^4-7x+9)/(4+5x+x^3) 0 1/4 1 4 The limit does not exist. 2. Evaluate: lim x->infinity (2^x+x^3)/(x^2+3^x) 0 1 3/2 2/3 The limit does not exist. 3. lim x->0 (x^3-7x+9)/(4^x+x^3) 0 1/4 1 9 The limit does not exist. 4.For the function g(f)=4f...
October 6, 2013

4. lim (tanx)= x->pi/3 -(sqrt3) 1 (sqrt3) ***-1 The limit does not exist. 5. lim |x|= x->-2 -2 ***2 0 -1 The limit does not exist. 6. lim [[x]]= x->9/2 (Remember that [[x]] represents the greatest integer function of x.) 4 5 ***4.5 -4 The limit does not exist. 7. lim...
October 6, 2013

Suppose that h(x)={x^2-x+5 if x<2 {5 if x=2 {x^3-1 if x>2 Which of the following is equal to 7? I. lim h(x) x->2- II. lim h(x) x->2+ III. lim h(x) x->2 I only II only ***III only I and II only I, II, and III
October 6, 2013

Yes, I understand that, but the question I have does not specify which limit. Right, or left. - or +. So I will assume I that -5 will be counted as correct. Thank you though for verifying that.
October 6, 2013

Oh, there are 6 x values, but I forgot one. After 2.999 is 3.001. Sorry! Would -5 still be correct though?
October 6, 2013

I think it's -5
October 6, 2013

Consider the table of data for the function g(x),below: x: 2.9, 2.99, 2.999, 3.01, 3.1 g(x):4.41, 4.9401, 4.994, -5.006, -5.0601, -5.61 From the data given, it would appear that the lim g(x) x->3 is likely to be:
October 6, 2013

physics
On a spacecraft two engines fire for a time of 748 s. One gives the craft an acceleration in the x direction of ax = 5.21 m/s2, while the other produces an acceleration in the y direction of ay = 3.45 m/s2. At the end of the firing period, the craft has velocity components of ...
October 5, 2013

physics
After leaving the end of a ski ramp, a ski jumper lands downhill at a point that is displaced 62.3 m horizontally from the end of the ramp. His velocity, just before landing, is 22.0 m/s and points in a direction 40.3 ° below the horizontal. Neglecting air resistance and ...
October 5, 2013

Physics
A quarterback claims that he can throw the football a horizontal distance of 187 m. Furthermore, he claims that he can do this by launching the ball at the relatively low angle of 32.4 ° above the horizontal. To evaluate this claim, determine the speed with which this ...
October 5, 2013

politics
what is a us government shutdown?
October 5, 2013

Thank you!! Unfortunately I couldn't wait for your response, but I went over my answers before checking to see if they were right, and I got them all right! Thank you so much for your help! It means the world to me, and will count on you if I need help on more topics in ...
October 5, 2013

The domain of f(x)=(1)/(sqrt(x^2-6x-7)) is (1, 7) [-1, 7] x > -1 or x < 7 ***{x < -1}U{x > 7} (-∞, -1]U[7, ∞) 2. In which of the following is y a function of x? I. y^2=9-x^2 II. |y|=x III. y=(sqrt(x^2))^3 I only II only III only ***I and III only I, II ...
October 5, 2013

Oh, for 11 I chose A (first option)
October 2, 2013

Okay, so I think these are right, but I would appreciate if someone could check them and tell me if something is wrong and what the right answer is. I'd also appreciate an explanation if possible. :)Thank you! 7. Given that f(x)={x^3 if x ≥ 0 {x if x < 0 which of ...
October 2, 2013

Could someone tell me if I'm right, and if not what the correct answer is? Thank you! I'd appreciate an explanation, too, if you could. :) 1. Suppose you're given the following table of values for the function f(x),and you're told that the function is even: x f...
October 2, 2013

Hmm... Okay! I see how that works now! :) Thank you so much! I'll be posting a few more problems and would appreciate if you could help with those, too!
October 2, 2013

Did I get these practice questions right? 1. Suppose that f is an even function whose domain is the set of all real numbers. Then which of the following can we claim to be true? ***The function f has an inverse f –1 that is even. The function f has an inverse f –1, ...
October 2, 2013

Consider the following functions: f(x)=sin(x^4-x^2) h(x)=(|x|-3)^3 g(x)=1n(|x|)+3 s(x)=sin^3(x) Which of the following is true? h and g are even, f and s are odd. f is even, h and s are odd. h and s are even, f is odd. ***f and h are even, s is odd. f, h, and s are odd.
October 2, 2013

Did I get this practice question right? 1. Consider the following functions: f(x)=cos(x^3-x) h(x)=|x-3|^3 g(x)=1n(|x|+3) s(x)=sin^3(x) Which of the following is true? (Points : 1) f is even, h and s are odd. ***f and g are even, s is odd. h and s are odd, g is even. s is odd, ...
October 2, 2013

chemistry
What mass of silver chloride can be produced from 1.36L of a 0.130M solution of silver nitrate?
September 30, 2013

science
What is then volume in mL of then solution 3.04g of sodium chloride from a 0.110 M solution?
September 29, 2013

Research
Is it possible for someone to become deaf and mute at the age of ten while they were perfect before? If so, then what could be a reason that would lead them to lose both hearing adn talking? Thank you in advance! All help is greatly appreciated :)
September 15, 2013

General
thank you! :)
September 3, 2013

General
What kind of questions would a detective ask a witness of a murder? how often would the detective come to the witness if he or she was closely related to the victims? ie daughter/son? this is for a writing assignment i have. all help is greatly appreciated.
September 3, 2013

Social?
Thank you!!!
September 3, 2013

Social?
Hello! alright so this is basically a general knowledge kind of question but it's for my writing assignment. i'm not really sure what a preacher may say at a funeral and i've tried searchring on google and havent found any luck. so based on your experience can you ...
September 3, 2013

math
7n-7=70 7n=63 63/7=9 n=9 Am I Right?
July 7, 2013

math
uncle tom's age is 7 years less than 6 times his nephews age. the sum of their ages is 70 .
July 7, 2013

Math
thank you now i understand , i got the answer but i made a mistake on the equation
July 7, 2013

Math
The sum of 3 numbers is 45. The first number is 4 times the second, while the third is 9 more than the second. Create an equation and solve.
July 7, 2013

fill in the blank the ______________ of logarithms state that log (xy)= logx + log
June 11, 2013

Math
The price of a technology stock was \$9.83 yesterday. Today, the price fell to \$9.70 . Find the percentage decrease. Round your answer to the nearest tenth of a percent.
June 10, 2013

2 QUICK QUESTIONS PLEASE HELP ME I NEED THEM FOR THE MORNING! the ______________ (fill in blank) of logarithms state that log (xy)= logx + logy solve the equation 6^3x+1= 2^2x-3, Leave in extact form THANKS
June 10, 2013

Java Programming
I'm new to Java and I'm not sure how to write the source code for this problem I got in class... Write a java program using the while and if statement that will accept ten student grades and that will display the sum of the grades, the student average, and the ...
June 10, 2013

Fran Mallory is married, claims five withholding allowances, and earns \$3,500 (gross) per month. In addition to Federal income tax (FIT), social security, and Medicare withholding, Fran pays 2.1% state income tax, and ½% for state disability insurance (both based on her...
June 9, 2013

english
Combine the sentences by changing the italicized word group to an infinitive or infinitive phrase. Then write the complete sentence in the paragraph box. The journalist took a job in the hotel. This way he would get facts for an article. I got it wrong. I put: The journalist ...
June 3, 2013

Vectors
A 10-kg mass is suspended by two strings of length 5m and 7m attached to two points in the ceiling 10 m apart. Determine the tension on each string. Round your result to one decimal place (include a vector and position diagrams)
May 31, 2013

Vectors
The person who helped me before was not very helpful. ABC has vertices A(3,2,-5), B(4,-1,7) and C(-8,3,-6). a) Determine the area of ABC. b) Determine the coordinates of point D such that ABCD is a parallelogram. c) Is the parallelogram a rectangle? Justify ...
May 30, 2013

Chemistry
I am doing a lab on Creating An Effective Airbag. We need to find out how much of the base is needed, which is NaHCO3,if we have 2.25 M of HCl, which is the acid. How much of the sample do we need? and how do we find out how much we need?
May 29, 2013

calculus 12
7. ABC has vertices A(3,2,-5), B(4,-1,7) and C(-8,3,-6). a) Determine the area of ABC. b) Determine the coordinates of point D such that ABCD is a parallelogram. c) Is the parallelogram a rectangle? Justify your answer.
May 28, 2013

algebra
The class average on a math test was 75.5 and the standard deviation was 4.2. Find the z-score for a test score of 81
May 20, 2013

math
What is 7,000 decreased by 62%
May 18, 2013

math
Sunshine Honda sold 112 cars this month. If that is 40% greater than last month, how many cars were sold last month? which ratio do I do this under? For example Portion=Rate x Base
May 18, 2013

Science
When heated solid iron3 hydroxide decomposes to produce iron 3 oxide and water vapor if 0.75L of water vapor is produced at 227 degrees celsius and 1.0 aTm. how many grams of FE(OH)3 were used?
May 17, 2013

CALC
the productivity of a person at work (on a scale of 0-10) is modeled by a cosine function: 5cos (pie/2t) +5, where t is in hours. If the person starts work at t=0, being 8:00 am, at what times is the worker the least productive? a) 12pm B) 10 am and 2pm C) 11 am and 3 pm D) 10...
May 11, 2013

geometry
Jorge put colored cards into a bag. Two of the cards were green, three were red, one was orange, two were blue, and two were purple. Jorge wants to find the probability that he will pull an orange card from the bag. What step does Jorge take to determine the number of possible...
May 2, 2013

chem
Write the orbital notation for chromium. Type your answer using the noble gas abbreviation of the configuration and only the symbols in the table below. Enter the major energy levels with their sublevels in the order in which they are filled. Enter filled orbitals in a ...
May 2, 2013

calculus
ƒ(x) = x³ - 4x + 2 ƒ'(x) = 3x² - 4
April 29, 2013

science
Al(s) + HCl(aq) AlCl3(aq) + H2(g) Zn(s) + HCl(aq) ZnCl2(aq) + H2(g) Consider the unbalanced equations above. A 0.250 g sample of a mixture of aluminum and zinc metal is reacted with an excess of hydrochloric acid. Both metals react with hydrochloric acid. The sample produces ...
April 29, 2013

Life Orientation
In 10-15 lines critically discuss 5 ways in which hiv & aids impacts on the community. Provide relevant sources to support your claim..
April 27, 2013

Life orientation
Looking for the same answer.. Lol
April 27, 2013

Chemistry
A mass of a copper oxide weighed 10.00grams. The reaction was run and the amount of just copper obtained was 8.88grams. What is the empirical formula of the compound?
April 25, 2013

Math
A rose garden is designed by joining a rectangle and a semicircle, as shown below. The rectangle is 29ft long and 17ft wide. If the gardener wants to build a fence around the garden, how many feet of fence are required? (Use the value 3.14 for pi, and do not round your answer...
April 18, 2013

Determine the absolute extrema of each function on the given interval. Illustrate your results by sketching the graph of each function. a) f(x) = x^2 − 4x + 3 , 0 ≤ x ≤ 3 b) f(x) = (x − 1)^2&#...
April 16, 2013

Algebra
Find the vertex, maximum or minimum,and if the concave is up or down. Y= 3x-54x+241
April 15, 2013

math
thanks
April 3, 2013

math
hey ms sue is this like a class site because ill get off if i have to
April 3, 2013

math
The circumference of a basketball is 26 inches. What is the approximate diameter of a basketball? (Use 3.14 for .)
April 3, 2013

math
i don't know what the missing piece of the equation because i just copied and pasted the question
April 3, 2013

math
thanks for answering my question before i start critisizing
April 3, 2013

math
that waz wrong not one of the answer choices that i have here
April 3, 2013

math
Helen determined she walks about 1,800 steps per of a mile. How many steps did she take if she walked 5 miles?
April 3, 2013

Thanks Billy!
April 3, 2013

Please help I have a test tomorrow! Is there a mistake with the comparative adverb? 1. Thomas jumped highly than he ever had before. a. Change highly to higher . b . Change highly to highlier . c. Change highly to more higher . d. Make no change. 2. Andre felt gooder after he...
April 3, 2013

algebra
do you think you could help me with this quiz?
April 2, 2013

THANK YOU SOOOOO MUCH!!!!!!!!!! You just saved me from failing my essay :)!!
March 29, 2013

Can someone please proofread this for me? Thank you. Mi viaje al cine y el restaurante. En la tarde del sabado, mi amiga, Amelia, y yo vamos en el centro a las dos y media de la tarde. Mi amiga lleve los jeans negro y la blusa amarilla, y yo llevo el vestido verde y la bufanda...
March 29, 2013

calculus
determine the point of intersection of the tangents at the points of inflection to the curve f(x)= x^4 – 24x^2 – 2
March 28, 2013

Applied Behavioral Science
Recognizing Culture Gaps As a leader, how might a leader recognize a culture gap? What are some techniques leaders might use to influence and change cultural values when necessary?
March 24, 2013

Chemistry
How many grams of C6H12O6 must be added to 0.750 kg of water to make a 1.25 m solution?
March 20, 2013

Chemistry
How many grams of H2SO4 are needed to make a 4.50 m solution in 300 g H2O?
March 20, 2013

math
The strongest recorded earthquake in the world took place in Chile on May 22 1960. It had a magnitude of 9.5 on the Richter scale. The strongest quake actually recorded in Canada was magnitude 8.1 on August 22 1949 and occurred off the Queen Charlotte Islands. (The strongest ...
March 19, 2013

The strongest recorded earthquake in the world took place in Chile on May 22 1960. It had a magnitude of 9.5 on the Richter scale. The strongest quake actually recorded in Canada was magnitude 8.1 on August 22 1949 and occurred off the Queen Charlotte Islands. (The strongest ...
March 18, 2013

math
how to solve this need to change to equivalent divisio with a whole number 0.4/9.16
March 15, 2013

physics
calculate the uncertainty of the coefficient of friction. avg. ì=.574
March 13, 2013

physics
a car traveling 41.6 m/s is 190 m behind a truck traveling 19.4 m/s. how long will it take the car to reach the truck?
March 11, 2013

physics
at highway speeds, a particular automobile is capable of an acceleration of about 2.6 m/s^2. at this rate, how long does it take to accelerate from 60 km/h to 110 km/h?
March 11, 2013

geography
do you think that the island of Santorini was in fact the legendary Atlantis Plato depicted? Support your view with evidence
March 2, 2013

chemistry
its -3.02
March 1, 2013

A coffee cup calorimeter contains 100ml of .200M H2SO4 at 22.3 degrees Celsius. When 2.16g Mg is added, the temperature rises to 36.3 degrees Celsius. What is the heat of the reaction per mole Mg? Please help and show steps. Much appreciated :)
February 27, 2013

Math
Teresa had a family photo with the dimensions of 12 inches by 16 1/2 inches. What is the area of the photo in square inches? Please help!!! :(
February 25, 2013

physics homework
two tugboats pulled a disabled supertanker. each tug exerts a constant force of 1.80 x 10 degree N, one 14 degree west of north and the other 14 degree east of north, as they pull the tanker 0.75 km toward the north. what is the total work they do on the supertanker?
February 23, 2013

physics homework
You throw a 20 N rock into the air from ground level and observe that when it is 1 5.0 M high, it is traveling upward at 25.0 m/s. Use the work energy principle to find (a) the rock’s speed just as it left the ground and (b) the maximum height the rock will reach.
February 23, 2013

physics
A stone is thrown horizontally at 30.0 m/s from the top of a very tall cliff. (a) Calculate its horizontal position and vertical position at 2-s intervals for the first 10.0s. (b) Plot your positions from part (a) to scale. Then connect your points with a smooth curve to show ...
February 17, 2013

english/history
Explain how The Federalist Papers would have been more or less successful if newspapers had been printed monthly (rather than daily or weekly).
February 15, 2013

Math
Number Sense Fabio said that there are 3 times as many people on a basketball team as on a tennis team. Is he correct? Explain why or why not. Tennis--2 players Basketball--5 players Softball--10 players
February 11, 2013

Finance
You (or your parents) plan to pay \$1,275.00/month for a mortgage. How much is the minimum realized income per month to the nearest penny
February 11, 2013

chemistry
If you were asked to convert 25 cg to the unit hg, which of the following would be the first fraction used in the conversion?
February 10, 2013

chemistry
Which statement is the best example of pseudoscience? Mike joined a group that studies phrenology. C.J. joined a group that studies endangered species. Katarina joined a group that studies herbal remedies. Lee joined a group that studies stars and planets
February 10, 2013

math
find the unit rate of \$122 in 8 days
February 5, 2013

math
the unit of \$112 in 8 days
February 5, 2013

Algebra II
Simplify the expression in exponential notation. a*a*a I thought it was a^3 but that was wrong.
February 4, 2013

Math
Select all that justify the following statement. 2 * 1/2 = 1
February 4, 2013

math,probability
I just don't understand how to start it, I need structure , I can figure out the rest, don't know how to get into a strategy.
February 2, 2013

math,probability
Hi, I don't understand a homework question, can anyone please help me? I'm bad at probability. what is the probability that when you pick two cards, you will select at least one king out of two in a deck of six standard cards? (assuming there are no jokers)
February 2, 2013