Thursday

December 8, 2016
Total # Posts: 1,952

**math**

Bob finds that the cost of driving his truck is 92 cents per mile. Give a symbolic and graphical representation for a function f(x) that computes the cost in dollars of driving x miles. Assume 0<x<60

*March 25, 2012*

**CHEM, please help!**

What pH buffer solution is needed to give a Ni2+ concentration of 2.5 x 10-3M in equilibrium with solid nickel hydroxide Ni(OH)2? Ksp = 6.0 x 10-16.

*March 18, 2012*

**math**

I had a total of 129 marbles in 3 boxes at first. Then i away 2/3 of the marbles from box1, added 15 marbles to box 2 and added somes to box 3 until the number of marbles in box 3 tripled. As a result, the ratio of the number of marbles in box 1 to the number of marbles in box...

*March 13, 2012*

**Math**

100Ã—431Ã·8576-234+65454Ã—443321167899= [this might be hard]

*February 29, 2012*

**Science**

A student observed two different types of cells under a microscope. She noticed that one cell had many more mitochondria than the other. What can the student predict about the cell with more mitochondria? A. The cell produces more waste. B. The cell makes more proteins. C. The...

*February 27, 2012*

**Chemistry**

FIRST U should find whether there is reaction when they are mixed,and then what is the concentration of the mixture.next,find the concentration of H+ ion,finally,use this formular to solve your problem pH =-log[concentration of H+ ]

*February 26, 2012*

**Art**

These are all of the answers!! Gosh how hard could this possibly be. 1. Alexander Calder invented this type of art. (0 pts) fiber art (1 pt) mobiles (0 pts) stabiles (0 pts) public art 2. Today, decisions in planning, selecting, and/or creating an artwork for public display ...

*February 20, 2012*

**CHEM, please help!**

A 11 mL sample of a solution of AlBr3 was diluted with water to 23 mL. A 15 mL sample of the dilute solution was found to contain 0.045 moles of Br-. What was the concentration of AlBr3 in the original undiluted solution? answer is 2.09 but i cant get it.

*February 16, 2012*

**chemistry**

. A 13 mL sample of a solution of AlBr3 was diluted with water to 56 mL. A 25 mL sample of the dilute solution was found to contain 2.21 M Br-. What was the concentration of AlBr3 in the original undiluted solution?

*February 16, 2012*

**chemistry**

How many milliliters of a 155 mL solution of 1.7 M AlCl3 must be used to make 70 mL of a solution that has a concentration of 0.21 M Cl-?

*February 16, 2012*

**chemistry**

describe how to prepare a .50 m solution of lead nitrate using only 100.00 mls of water. aslo discribe how to prepare a .50m sloution of sodium iodide using only 100.00 mls of water. explain the differences that exist between these two solutions. OK i have answers for both 1....

*February 15, 2012*

**6th grade math**

A stray dog ate 12 of your muffins.That was 3/10 of all of them! with how many did you start???

*February 13, 2012*

**6th grade math**

can someone please explain to me what the Answer is and also can someone please explain to me how to slove this question step by step??? Please??!!

*February 13, 2012*

**6th grade math**

If the weight of a package is multiplied by 5/7 the result is 40.5 pounds.Find the weight of the package.

*February 13, 2012*

**6th grade math**

thank you

*February 13, 2012*

**6th grade math**

can someone please help me with this question?And can someone also teach me step by step how to solve this question???Please???

*February 13, 2012*

**6th grade math**

your mother gave you $13.32 with which to buy a present.This covered 3/5 of the cost.how much did the present cost? can someone please help me and also show me how to solve this?

*February 13, 2012*

**6th grade science**

thank you soooo much!!!!:)

*February 12, 2012*

**6th grade science**

please???I am in a big time rush!!! please!!!

*February 12, 2012*

**6th grade science**

can someone please help me with this!!! please...

*February 12, 2012*

**6th grade science**

why would a shredded carrot turn the softest when it is sitting on top of a table out in the open air compared to the carrot in water and the carrot in salty water?

*February 12, 2012*

**Calculus (Antiderivatives)**

ok im sorry :(

*February 11, 2012*

**Calculus (Antiderivatives)**

no idea

*February 11, 2012*

**cells**

please????

*February 11, 2012*

**cells**

can someone please help me??? I really have no idea what the answer is!!!

*February 11, 2012*

**cells**

suppose a cell is placed in a large container of water with a very low solute concentration.what do you think will happen?

*February 11, 2012*

**Chemistry**

IS this right?

*February 9, 2012*

**6th grade science**

please!!!

*February 9, 2012*

**6th grade science**

can someone please help me with this!!!

*February 9, 2012*

**6th grade science**

which particles cannot pass through the cell membrane?

*February 9, 2012*

**Math**

In a playground, there is a model of the old school building that is 6.6 feet long, 3.3 feet wide, and 4.6 feet high. If the real building was 80 feet long and 40 feet wide, how high was it?

*February 8, 2012*

**chemistry**

1.5x10^7 molecules of hydrogen sulfate. find the number of grams for the molecules listed

*February 8, 2012*

**6th grade science**

PLEASE!!!

*February 6, 2012*

**6th grade science**

can someone please help me!!!

*February 6, 2012*

**6th grade science**

at the end of cytokinesis, how many chromatids will be found in each daughter cell? explain.

*February 6, 2012*

**6th grade science**

is it the "S" phase???

*February 5, 2012*

**6th grade science**

during which phase is DNA duplicated?

*February 5, 2012*

**6th grade science**

thanks

*February 5, 2012*

**6th grade science**

can someone please help me!

*February 5, 2012*

**6th grade science**

what are the four phases of mitosis??? -------,-------,-------,-------

*February 5, 2012*

**6th grade math**

oh....I see,thanks!!!:)

*February 5, 2012*

**6th grade math**

HELP!!!!!

*February 5, 2012*

**6th grade math**

the expression 4 - p is equivalent to "four minus a number", but not to "a number minus four".explain why.

*February 5, 2012*

**Pre-Algebra**

Please let me know if I figured these out correctly. Directions: For the line with the given equation, find the slope of a parallel line and the slope of a perpendicular line. 1)y=6/5x + 144 slope of parallel: 6/5 slope of perpendicular: -5/6 2)4y-4x=16 slope of parallel: 1 ...

*January 30, 2012*

**Math**

Thank you!

*January 29, 2012*

**Math**

Please let me know if I figured this out correctly. Directions:Write an equation for the line that is perpendicular to the given line and that passes through the given point. 1) y=x-3; (4,6) Answer: y=-x-10 Thank you!

*January 29, 2012*

**Math**

Thank you!!!

*January 29, 2012*

**Math**

Please let me know if I figured this out correctly. Directions: Find the slope of a line perpendicular to the graph of each equation. 1) y= -x/5 - 7 Answer: Slope = 5 2) 2x + 3y=5 Answer: Slope = 3/2 Thank you!

*January 29, 2012*

**physics**

12120

*January 28, 2012*

**math**

Calculate the average rate of change over the given interval of the given function. f (x) = x3, from x = 8 to x = 9

*January 27, 2012*

**Right Triangle Trigometery**

If = 38° and z = 68 cm, what is the value of x to the nearest tenth of a centimeter?

*January 26, 2012*

**trig**

This is not trig. Anyway, C=2(pi)r. If the circumference is 12.31, then the radius is 12.31/[(pi)r] = 1.96. If the central angle is 1/4 of a revolution, then the central angle measure is 90 degrees. The area of a sector is a piece of the area of the entire circle: A=(pi)r^2 * ...

*January 25, 2012*

**Calculus**

Over what open interval does the formula F(x)= int from 0 to x of dt/t represent an anti derivative of f(x) =1/x? Find a point where the graph of F crosses the x axis.

*January 25, 2012*

**Calculus**

Let F(x)=int from 0 to x of (t-3)/(t^2+7) dt for -infinity <x< infinity. a. Find the value of x where F attains its minimum value. b. find the intervals over which F is only increasing or only decreasing. c. Find open intervals over which F is only concave up or only ...

*January 25, 2012*

**Calculus**

True or false: If f(x) is continuous on the interval [a,b] & if the definite integral of f(x) over this interval has value zero, then the equation f(x)=0 has at least one solution in the interval [a,b]. True or false: If f(x) is continuous everywhere and F(x)= int from 0 to x ...

*January 25, 2012*

**Calculus**

First, divide each term in the numerator by the denominator. x/x + sin(x)/x (x/x=1) 1+sin(x)/x The Sandwich (or Squeeze theorem) states that the limit as x->0 of sin(x)/x is 1. 1+1=2 You can ask me more questions on Facebook:Kate Calendrillo, Math Tutor.

*January 25, 2012*

**geometry**

If line segment A is parallel to line segment B and m<4=83, then m<2=?

*January 23, 2012*

**advanced math **

Can you please tell me if 14=-(p-8) is 6= -p .....

*January 23, 2012*

**sociology**

What are some changes that are occuring in families. Are these changes for the good or bad?

*January 20, 2012*

**chemistry(balance equation)**

How to balance HNO3 +Cu ------->Cu(NO3)2+NO+H2O ? please show me steps

*January 19, 2012*

**chemistry(balance equation)**

how about HNO3 +Cu ------->Cu(NO3)2+NO+H2O,PLEASE SHOW ME STEPS.

*January 19, 2012*

**chemistry(balance equation)**

so what side should i look for the LCM?

*January 19, 2012*

**chemistry(balance equation)**

hi!i am a f4 student in hk.i have know the basic concept of balance equation.but some too complex equation i cant balance.is there any general short cut for balancing any simple or complex chemical equation?

*January 19, 2012*

**English**

I am not sure. Maybe C

*January 18, 2012*

**English**

What conclusion can you draw about Samuel Pepys from his account of the Great Fire of London? A. He maintained relations with all social strata. B He became the spokesperson of the aristocracy. C he felt responsible for organizing rescue missions

*January 18, 2012*

**Math-Linear Equations**

Thank you so much - that clears it up for me!!! It's just been awhile since I've done this.

*January 16, 2012*

**Math-Linear Equations**

Please let me know if I understand this correctly. Find the slope and the y-intercept of each equation: 1)y-9x= 1/2 +9x= 1/2 + 9x y= 1/2 + 9x slope:9; y-intercept: 1/2 2)2y-6=3x +6 +6 2y=3x + 6 - - 2 2 so then: y=3x+3 3) -2y=6(5-3x) -2y= 30-18x - -- -2 -2 so then: y=-15-18x (...

*January 16, 2012*

**6th grade science**

peace out

*January 9, 2012*

**6th grade science**

thamk you izzy :)

*January 9, 2012*

**6th grade science**

which of the following lists all the levels of organization in a multicellular organism from the lowest level to the highest level? A)tissues and organ systems B)organ systems,tissues,organs,and cells C)tissues,cells,and organs D)cells,tissues,organs,and organ systems My ...

*January 9, 2012*

**6th grade science**

thank you Jahnay

*January 9, 2012*

**6th grade science**

organs are made up of two or more ____ that works together. my answer was tissues

*January 9, 2012*

**math**

what is 12 1/5 - 4 4/5?

*January 2, 2012*

**Math**

Makes sense now - thanks Reiny!!!

*December 19, 2011*

**Math**

Can you please help me set up this equation? Copies at the local library cost $.15 easch. A new copier costs $200 and it costs $.02 to make a copy. How many copies would have to be made for the cost of making your own copies equal to the cost of copying at the library? Thank ...

*December 19, 2011*

**ASTRONOMY**

Compare Einstein and Newton's pictures of gravity.

*December 19, 2011*

**6th grade science**

which of the following is made of many cells that work together? a. bacteria b. virus c. insect d. amoeba

*December 13, 2011*

**Physics**

A. Calculate the force on an alpha particle in an electric field E=Exm where E=3.6E4 N/C and x is a unit vector in the x direction. What is the direction of the force? B. Calculate the acceleration of the alpha particle in this electric field. What is the direction of the ...

*December 11, 2011*

**Accounting**

When Resisto Systems, Inc., was formed, the company was authorized to issue 5,000 shares of $100 par value, 8 percent cumulative preferred stock, and 100,000 shares of $2 stated value common stock. Half of the preferred stock was issued at a price of $103 per share, and 70,...

*December 9, 2011*

**Accounting**

The following information is necessary to compute the net assets (stockholders' equity) and book value per share of common stock for Rothchild Corporation: 8% cumulative preferred stock, $100 par $ 200,000 Common stock, $5 par, authorized 100,000 shares, issued 60,000 ...

*December 9, 2011*

**chemistry**

a sample of 0.002 mole of HCL is dissolved in water to make a 2000mL solution. What is the molarity?

*December 7, 2011*

**Chemistry**

Given the following equation: N2(g) + 3H2(g) = 2NH3(g). Determine to one decimal place the molar mass of each term, and WRITE EACH ONE AS A CONVERSION from moles to grams.

*December 5, 2011*

**6th grade math**

In general, the air temperature decreases 12F for every 4000 feet increase in altitude. If a hiker climbs 3000 feet, by how much can she expect the temperature to decrease?

*December 4, 2011*

**6th grade science**

thanks

*December 1, 2011*

**6th grade science**

describe the rate at which chemical weathering generally takes place.

*December 1, 2011*

**6th grade math**

write each rate as a unit rate. Q: 6 eggs for 3 people

*November 29, 2011*

**6th grade science**

I am pretty confused about mechanical weathering and chemical weathering. what is the easiest way to remember the differences of these 2 things

*November 28, 2011*

**reading **

the moon

*November 28, 2011*

**English**

Thank you for your answer!! Can I please ask why you chose that answer?

*November 28, 2011*

**English**

Do you think unskilled labor is just a commodity or input

*November 28, 2011*

**Business**

Do you think unskilled labor is just a commodity or input

*November 28, 2011*

**english**

I need help with finding information about the impact of hip-hop music or any music on general on teenagers

*November 27, 2011*

**Math**

Triangle NPQ has q= 95 miles, P = 76 degrees, and Q= 103degrees. Find n.

*November 27, 2011*

**Math**

The attendance at harmony school carnival has shown range of 200 people during the years from 2008 through 2011 which graph could show the carnival attendance correctly

*November 16, 2011*

**sentences**

thanks

*November 15, 2011*

**sentences**

Can you give me a sentence with the word difficulties?

*November 15, 2011*

**6th grade science**

I chose choice A

*November 11, 2011*

**6th grade science**

limestone is made of the remains of organisms.In what way have decaying plants changed Florida's limestone bedrock? 1) decaying plants acidify water,which desolves limestones 2)decaying plants absorb water,which keeps limestone from dissolving 3)decaying plants changed ...

*November 11, 2011*

**6th grade science**

so I believe the answer to this question would be crop rotation?

*November 11, 2011*

**6th grade science**

i chose D "no till-farming"

*November 11, 2011*