Tuesday

September 30, 2014

September 30, 2014

Total # Posts: 115

**mathematics**

thabo is x years old and lizzie is y years old write down algebraic expression for a) thabo's age in 6 years time
*August 14, 2014*

**calculus**

The answer in my textbook says 1 for the value of c. I don't understand how it arrived there.
*July 22, 2014*

**calculus**

Find the value or values of c that satisfy the equation f(b)-f(a)/b-a = f'(c) in the conclusion of the mean value theorem for the given function and interval f(x)= x^(2/3) , [0,1]
*July 22, 2014*

**pre cal**

cosA (-7/25) pi < A < 3pi/2 sin B= -3/5 3pi/2 <B<2pi
*January 21, 2014*

**Math**

The Pioneer 10 spacecraft passed the planet Jupiter on December 12, 1973, and exited the solar system on June 14, 1983. The craft traveled from Mars to Jupiter, a distance of approximately 1 billion kilometers, in one year and nine months. a.Calculate the approximate speed of ...
*November 17, 2013*

**Taylor**

To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 12.6 g, and its initial temperature is -10.4 °C. The water resulting from the melted ice reaches the temperature of your skin, 28.1 °C. How much heat is ...
*November 15, 2013*

**mathematics (urgent)**

I eventually figured out the last one, so I'll only need some help with this: The cafeteria has 144 bananas, 36 pears, and 72 apples. Each student gets the same number of pieces of fruit. What is the greatest number of students who can receive fruit? I figured out that the...
*October 15, 2013*

**mathematics**

The cafeteria has 144 bananas, 36 pears, and 72 apples. Each student gets the same number of pieces of fruit. What is the greatest number of students who can receive fruit? The 48 members of a chorus will sit in rows in front of the 300 members of the audience. All the rows ...
*October 15, 2013*

**Math**

The tens digit is a multiple of 5 The hundreds digit is 1 less than the tens digit The ones digit is less than the hundreds digit The sum of the digits is a multiple of 6 What is the mystery number??
*October 3, 2013*

**algebra 1**

A local citizen wants to fence a rectangular community garden. The lengthof the garden should be at least 110ft., and the distance around should be no more than 380 ft. Write a system of inequalities that models the possible demensiopns of the garden. Graph the system to show ...
*May 21, 2013*

**Physics**

A police car's siren has a frequency of 567-Hz while traveling at 24.8-m/s. If the car is coming toward you, and you are stationary, what frequency would you hear?
*February 28, 2013*

**Math: Algebra 1**

Good work. You're correct.
*November 27, 2012*

**Math: algebra 1**

Yes, you are correct.
*November 27, 2012*

**Biology**

Bacteroides and Escherichia are both gram-negative rods found in the large intestine. Why are they in different phyla?
*November 7, 2012*

**trig**

a voltmeter's pointer is 3 cm in length. find the degrees through which is rotates when it moves 1.1 cm on the scale?
*May 23, 2012*

**Algebra**

how do i find the fractional notation of 11.443 and equal it to ?/1000
*May 13, 2012*

**Algebra**

55/18=17/16+1/2x
*May 6, 2012*

**Spanish**

Thank you
*April 25, 2012*

**Spanish-Please check answers**

I would really appreciate someone just checking answers. I couldn't number them because it wouldn't take it with numbers-kept saying didn't accept URL The first sentence in each is the sentence and right after I put it is long adjective form. Thank you
*April 25, 2012*

**Spanish**

Please check-I had to write each sentence in long adjective form Su casa es moderna. La casa suya es moderna. Mis amigos son españoles. Los amigos míos son españoles. Nuestras clases son interesantes. Las clases nuestras son interesantes.
*April 25, 2012*

**Alegebra 2**

Two numbers have a ratio of 7:5. The sum of teh two numbers is 960. What are the two numbers?
*December 18, 2011*

**chemistry**

A 2.97 g sample of a molecular compound is dissolved in 103 g of tetrachloromethane (carbon tetrachloride). The normal boiling point of the solution is 61.51C, the normal boiling point of CCl4 is 61.2C. The boiling point constant for CCl4 is 4.95 K · kg/mol. ...
*December 6, 2011*

**chemistry**

Which of the following does NOT have an angular shape? 1. NH2 - 2. ClO2 - 3. HOCl 4. S3 -2 5. N3 -
*November 17, 2011*

**Algebra-Please check work**

I've reworked this and added on is any of it correct?Totally confused-learned this today and I don't get it-Please help Write the standard form of 9x^2 + 4y^2-72x+16y+124=0 I think the first step is to take the constant to right side so I have: 9x^2 + 4y^2-72x+19(x^2-...
*October 31, 2011*

**Algebra**

Totally confused-learned this today and I don't get it-Please help Write the standard form of 9x^2 + 4y^2-72x+16y+124=0 I think the first step is to take the constant to right side so I have: 9x^2 + 4y^2-72x+16y=124 But then I'm lost!
*October 31, 2011*

**chemistry**

If you burn 0.200 g of C(graphite) in an excess of O2 to give CO2, the temperature of the calorimeter, which contains 775 g water, increases from 25.00 degrees C to 27.38 degrees C. The heat capacity of the bomb is 893 J/K. What quantity of heat is evolved per mole of C? C (...
*October 30, 2011*

**chemistry**

3.6 g of a hydrocarbon fuel is burned in a calorimeter that contains a 244 grams of water initally at 25.00 degrees C. After the combustion the temperature is 26.55 degrees C. How much heat is evolved per gram of fuel burned? The heat capacity of the calorimeter (hardware only...
*October 26, 2011*

**Anatomy/Biology-Please check**

I'm posting this again today hoping someone can clarify this for me-I've posted it prior but no one answered yesterday so I'll try again. Thank you in advance I have two question 1.In a dehydration synthesis reaction which of the following occur- a. hydrogen and ...
*September 13, 2011*

**Anatomy**

I'm posting this again today hoping someone can clarify this for me- I have two question 1.In a dehydration synthesis reaction which of the following occur- a. hydrogen and oxygen are removed from the reactant b. water is added to the reactants c. water is broken down into...
*September 13, 2011*

**Anatomy**

I have two question 1.In a dehydration synthesis reaction which of the following occurs a. hydrogen and oxygen are removed from the reactant b. water is added to the reactants c. water is broken down into hydrogen and oxygen d. both a and c I think it would definitely be a ...
*September 12, 2011*

**Anatomy**

I have a question In a dehydration synthsis reaction which of the following occurs a. hydrogen and oxygen are removed from the reactant b. water is added to the reactants c. water is broken down into hydrgen and oxygen d. both a and c I think it would definitely be a and I ...
*September 12, 2011*

**Chemistry**

1.162
*May 6, 2011*

**geometry**

can i have different types of quadrilaterals and their properties
*April 27, 2011*

**maths**

name properties of quadrilaterals through transformation
*April 27, 2011*

**Spanish7th grade-Please check**

I'm not sure about the last one-it is referring to 7-12th-that's why I wasn't sure whether it would be true or false
*April 19, 2011*

**Spanish7th grade-Please check**

Could you please check these two answers: 1.Fill in the blank with what would logically follow: primero,_______ I think it is segundo, correct? 2.Fill in blank with what would logically follow: tercero_________ I think it is cuarto, correct? 3. In a Mexican school, the school ...
*April 19, 2011*

**Chemistry**

A quantity of gas under a pressure of 302 kPa has a volume of 600. cm3. The pressure is increased to 545 kPa, while the temperature is kept constant. What is the new volume?
*March 31, 2011*

**Chemistry**

A quantity of gas under a pressure of 302 kPa has a volume of 600. cm3. The pressure is increased to 545 kPa, while the temperature is kept constant. What is the new volume?
*March 31, 2011*

**Physics**

The reason I only asked the first part was I first wanted to understand how to construct it before I figured out the rest because I have three more sets of circuits to do so now I understand that part. I wasn't trying to mislead you-I really appreciate the help alot and ...
*March 26, 2011*

**Physics-oops!**

In my calculations I think I should have said V=IR V= 20V Battery I used so 20V = I * 20 Ohm= 1A 20V = I * 30 Ohm = .67A
*March 26, 2011*

**Physics-Please recheck**

I drew my circuit but now I'm still confused-if I have a 20 V battery, how do I calculate the current through two of the resistors(say the two parallel ones of 20 and 30 Would I use the formula V=IR 20V =I*12Ohm(which I just figured out) 20/12 = 1.67A But now I'm stuck...
*March 26, 2011*

**Physics**

I'm totally confused and this is due Monday- We're dealing with electrical circuits and I have to construct a circuit with resistors of 10 Ohms, 20 Ohms, 30 Ohms and 20 Ohms. The total resistance has to be 42 Ohms-Can someone direct me how to even begin to draw this-I ...
*March 26, 2011*

**Algebra I**

Write a system of equations to solve- Kay sells athletic shoes aat a store. She can either earn $500 per month plus 4% commission on her tial sales, or $400 per month plus a 5% commission on total sales. then B. What is the total price of the athletic shoes she needs to sell ...
*March 2, 2011*

**Algebra I**

Write a system of equations to solve- Kay sells athletic shoes aat a store. She can either earn $500 per month plus 4% commission on her tial sales, or $400 per month plus a 5% commission on total sales. then B. What is the total price of the athletic shoes she needs to sell ...
*March 2, 2011*

**Algebra 1**

The perimeter of a triangle is 20 inches. The longest side is 4 inches longer than the shortest side, and the shortest side is three -fourths the length of the middle side. Find the length of each side of the triangle
*March 2, 2011*

**algebra**

i give up no ones answering me ugh:(
*October 6, 2010*

**algebra**

does anyone know??????????
*October 6, 2010*

**algebra**

2/3+3k/4=71/12 and y=12/8 is this right?????
*October 6, 2010*

**algebra**

is this right? 2/3+3k/4=71/12 y=12/8
*October 6, 2010*

**algebra**

14 is wrong the answer is 16 because you multiply 6*3 then 5*6 then 6*6 then 6*2 and you get 96 then you do 96/6 and you get 16
*October 6, 2010*

**algebra**

14 is wrong the answer is 16 because you multiply 6*3 then 5*6 then 6*6 then 6*2 and you get 96 then you do 96/6 and you get 14.
*October 6, 2010*

**algebra**

um im not sure i dont really understand how to do this i got 32 but im not sure if its right though
*October 6, 2010*

**algebra**

If 8x+16=48 then what does x equal?
*October 6, 2010*

**algebra**

ok thank you
*October 6, 2010*

**algebra**

isnt it 13.4?? cause if you do 67/5 you get 13.4
*October 6, 2010*

**algebra**

what??? i dont get it:(
*October 6, 2010*

**algebra**

if 10+5y=77 then what is y?
*October 6, 2010*

**math**

what do x and y equal?
*October 6, 2010*

**algebra**

i re did it and got 16???? idk if its right though
*October 6, 2010*

**algebra**

i did the math on a caculater and got 26
*October 6, 2010*

**algebra**

N=14 cause 14*2=28
*October 6, 2010*

**Physics**

If I throw a tennis ball straight up in the air at the same time my friend throws one straight down at the same height-initial height 3 feet and initial speed 2 km, which ball lands on the ground first, has the greater acceleration, lands with a greater speed, travels the ...
*October 3, 2010*

**Food and Nutrition**

List and explain 10 deffiencies assiociated with poor nutrition
*September 27, 2010*

**Food and Nutrition**

List and explain any 10 differencies assiociated with poor nutrition
*September 27, 2010*

**Algebra**

Thank you
*September 22, 2010*

**Algebra**

Please help with this question or direct me Determine the discriminant of x^2 = 4 Answers: 17 16 -15 -10
*September 22, 2010*

**Chemistry**

Please help-I need to give at least three examples of how heat, solutions,equillibrium, nuclear and organic chemistry are interrelated. Any help would be greatly appreciated-I'm desperate Thank you
*June 2, 2010*

**Chemistry**

Please help-I need to give at least three examples of how heat, solutions,equillibrium, nuclear and organic chemistry are interrelated. Thank you
*June 1, 2010*

**Chemistry**

Please help-I need to give at least three examples of how heat, solutions,equillibrium, nuclear and organic chemistry are interrelated. Thank you
*May 31, 2010*

**Chemistry**

Thanks Dr. Bob
*May 20, 2010*

**Chemistry-Is this correct, please and thank you**

Positron Emissionfrpm silicon -26 would be: 26/14Si (arrow) Al + 0/+1 e Sodium-22 undergoes electron capture 22/11Na + 0/-1e (arrow) 22/10Ne
*May 20, 2010*

**Chemistry**

What are the equations for the following? Positron emission from silicon-26 and Sodium-22 undergoes electron capture I really don't get it Thank you
*May 20, 2010*

**poetry**

ok thanks!
*March 5, 2010*

**poetry**

Would you agree "Still I Rise" also has autobiographical undertones such as Angelou's rape? Could "Does my sassiness upset you?: (5) and "Does my sexiness upset you?" (25) express her finally finding confidence in her sexuality/ sensuality (because...
*March 5, 2010*

**poetry**

" I am the dream and the hope of the slave." Refers to the woman the speaker has become (powerful and confident) which African American slaves aimed to obtain after all the inequalities and discrimination they experienced. So theme = In a society that limits one'...
*March 5, 2010*

**poetry**

What is the tone and theme of Maya Angelou's poem "Still I Rise"?
*March 5, 2010*

**Literary Analysis and Composition**

Stfu mr. Peter Parker not everyone has time to read 10, 10 pg. long books.
*January 21, 2010*

**12th grade Economics**

Describe the automotive Industry- How does the company answer the basic economic questions?
*November 10, 2009*

**Economics**

How does the automobile industry answer thr basic economic questions?
*November 10, 2009*

**The secret of gumbo grove**

Need ASAPPPPPPP!
*October 20, 2009*

**English**

All of Jays answers are correct. Made 100% Thank you Jay
*May 7, 2009*

**English**

What would be a good topic paragraph idea for an essay about the shakespeare quote "Some are born great ,some achieve greatness and some have greatness thrustupon them"?
*March 9, 2009*

**Chemistry**

What happens when equal volumes of 0.2M Na2SO3 and 0.2M CaSO3 are mixed? A. Only Na2S precipitates. B. Only CaSO3 precipitates. C. Both CaSO3 and Na2S precipitate. D. No precipitate forms.
*January 24, 2009*

**Chemistry**

Using the change in oxidation number method, balance the redox reaction shown below. (NO2^2)+ (MnO4^-)---> (NO3^-)+ Mn^2+ Divide into half reactions. I will show you how to do MnO4^- and you do the other one. MnO4^- ==> Mn^+2 Step 2. Determine the oxidation state of the ...
*June 17, 2007*

**Chemistry**

A galvanic cell is made with aluminum and zinc electrodes. (For Ag^+(aq)+(e^-)--->Ag(s), E=0.80 V and for Cu^2+(aq)+(2e^-)--->Cu(aq), E=0.34 V) Write the standard cell notation for this cell. Wouldn't it be silly to use the potentials for copper and silver for an ...
*June 17, 2007*

**Chemistry**

Using the half- reaction method, balance the redox reaction shown below. (I-)+(Br2) ---> (IO3-)+(Br-) Step 1. Break the reaction into the two half reactions. Br2 ==> Br^- I^- ==> IO3^- Step 2. I will leave the first one for you to do. The second one is done as follows...
*June 13, 2007*

**Spanish- SraJMcGin**

Posted by Aubrey on Monday, June 4, 2007 at 2:49pm. download mp3 free instrumental remix I am having troubles translating these sentences. 1.) Were the princesses singing? 2.) Did the queen used to cry? 3.) Do they like to sing? 4.) Doesn't the duchess like to sing? 5.) ...
*June 4, 2007*

**Spanish**

I am having troubles translating these sentences. 1.) Were the princesses singing? 2.) Did the queen used to cry? 3.) Do they like to sing? 4.) Doesn't the duchess like to sing? 5.) Which duke likes to sing? Thank you for using the Jiskha Homework Help Forum, BUT, you are ...
*June 4, 2007*

**Spanish**

Answer the following questions about demonstrative adjectives. Answer whether the noun modified is singular or plural. Then fill in the blank with the correct demonstrative adjective in Spanish. 1. They prefer that restaurant. Prefieren -------restaurante. I think the noun is ...
*May 21, 2007*

**Algebra**

I need some help multiplying these two sets of binomials. 1. (x+5)(x+3) so I think the answer to this one is x^2+15 is this correct? 2. (x-5)(x+3) I think the answer to this one is x^2-15 but how do you know when to make it a + or a - in the solution? 1. WHat is 5 times x, ...
*April 11, 2007*

**Algebra**

What is the factorization of x^2+8x+15? 3*5=15, and 3+5=8.
*April 11, 2007*

**Spanish 1**

Match the verbs and the subjects- 1. Maria(estudiar) 2.Nosotros(comer) 3. Yo(ser): el(ser) 4. El y ella no (vivir) 5. Tu (estar) Are there any pictures or sentences that go along with the subjects? All of these subjects could go with any verb. This site will help you with that...
*March 23, 2007*

**Spanish 1**

Conjugate the following verbs in Spanish- 1. Estudiar- singular and plural 2. correr- singular and plural 3. vivir- singular and plural This site will help you with that: http://www.spaleon.com/conj.php Thank you for using the Jiskha Homework Help Forum. Please see the ...
*March 23, 2007*

**Algebra**

Convert the simplified parabolic equation y=3x^2-30x-7 to standard form. 3x^2-30x-7 3x^2 -30 x -7 +75 -75 3(x^2 -10x + 25) -82 3(x-5)^2 -82 or y = 3(x-5)^2 -82 check that.
*March 16, 2007*

**Algebra**

Consider the basic upward parabola y=x^2 In this parabola as the x increases toward positive infinity , does the y value also increase toward infinity? If so does it increase faster or slower than the x? yes, faster, it increases as the square of x.
*March 16, 2007*

**chemistry equation**

Write a net ionic equation for the reaction of iron(III)chloride and potassium thiocyanate. Fe+++ + CNS- ==> FeCNS++ This FeCNS++ complex ion is an intrnse red color.
*March 15, 2007*

**Chemistry**

Could someone explain Le Chatelier's principle to me? Thanks Reactions tend to go to the direction that reduces stress: stress from pressure, temperature. If a reaction gives off heat (exothermic), it will go faster if temperature is reduced, ie, it is easier to give off ...
*March 15, 2007*

**Spanish 1**

I have to match the verb with the subject. 1.Maria(estudiar) 2.Nosotros(comer) 3.Yo(ser) alta, pero el(ser) 4.El y ella no(vivir) 5.Tu (estar) Maria Estudia Nosotros Comemos Yo soy alta, pero el es el y ello no viven tu estas (accent on a) (present tense) Thank you for using ...
*February 25, 2007*

**Spanish**

I need help with the subject verb agreement for this assignment: 1. It eats 2.It hears 3.It attacks 4.It doesn't eat 5.It doesn't hear 6.It doesn't attack 7.They eat 8. They hear 9. They attack 10.They don't eat 11. They don't hear I'm using the ...
*February 20, 2007*

**Economics**

Pat and Kris are roommates. They spend most of their time studying, but they leave some time for their favorite activities: making pizza and brewing root beer. Pat takes 4 hours to brew a gallon of root beer and 2 hours to make a pizza. Kris takes 6 hours to brew a gallon of ...
*February 11, 2007*