Tuesday

January 27, 2015

January 27, 2015

Total # Posts: 1,364

**math**

A mobile shop sold one phone set everyday in the month of February and March of 2013. If each set costs $102, which of the following is closest to the money the shop earned in these two months? pick an answer that is right :/ (counfuesd) $5,000 $6,000 $7,000 $8,000
*October 16, 2013*

**math**

answer the qustion plz
*October 16, 2013*

**math**

A road is 53 km 500 m long. Out of this, 15 km 800 m is closed for repairing. How much of the road is open to traffic?
*October 16, 2013*

**language**

dosent make sense
*October 16, 2013*

**Calculus - help please! :)**

No calculators are allowed for this question.
*October 9, 2013*

**Calculus - help please! :)**

1. Given that f(x) = x^2 − 2x and that g(x) = sqrt(x-15): A. State (g • f)(x) and (g + f)(x). B. Find all vertical asymptotes of (g/f)(x). C. Determine the domain of (g ○ f)(x). D. Determine the range of (g ○ f)(x).
*October 9, 2013*

**Check my CALCULUS answers please!**

I just did some more practice problems, and got them right! Thank you so much! You made my day. :)
*October 7, 2013*

**Check my CALCULUS answers please!**

Wow... That, just made so much more sense to me with the examples you provided. I'm going to do some more practice questions knowing what you told me. My lesson didn't teach it like you just did!
*October 7, 2013*

**Check my CALCULUS answers please! **

Any short explanation for things I got wrong would be great, too, if possible! Thanks in advanced! :) 8. Which of the following functions grows the fastest? ***b(t)=t^4-3t+9 f(t)=2^t-t^3 h(t)=5^t+t^5 c(t)=sqrt(t^2-5t) d(t)=(1.1)^t 9. Which of the following functions grows the ...
*October 7, 2013*

**Calculus, please check my answers!**

Thank you so much for not only verifying my answers, but also for your great explanations! I really appreciate it! :)
*October 7, 2013*

**Calculus, please check my answers!**

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*

**Calculus help, please! **

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*

**Calculus. Limits. Check my answers, please! :)**

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*

**Calculus - Limits. Check my answer, please! :)**

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*

**Calculus help, please! :)**

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*

**Calculus help, please! :)**

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*

**Calculus help, please! :)**

I think it's -5
*October 6, 2013*

**Calculus help, please! :)**

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*

**CALCULUS. Check my answers, please! :)**

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*

**CALCULUS. Check my answers, please! :)**

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*

**Calculus, check my answers, please? :)**

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

**Calculus, check my answers, please? :)**

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*

**Calculus, check my answers, please! **

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*

**Calculus, check my answers, please! 3**

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*

**Calculus, check my answers, please! 3**

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*

**Calculus, check my answer, please! 2**

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*

**Calculus, check my answer, please! 1**

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*

**math 5th grade**

430
*September 12, 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*

**advance functions gr 12**

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*

**advance functions gr 12**

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*

**business math**

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*

**Grade 12 Calculus **

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*

**6th grade grammar**

Thanks Billy!
*April 3, 2013*

**6th grade grammar **

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*

**Spanish - Proofreading**

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

**Spanish - Proofreading**

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*

**adv functions**

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*

**Chemistry calorimeter.. please help!**

thank you!
*February 27, 2013*

**Chemistry calorimeter.. please help!**

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*

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