# Posts by Zack

Total # Posts: 308

**college physics**

i don't know

*November 21, 2011*

**Math**

X=-5

*November 17, 2011*

**Veterans Help!!!**

what are the reasons to help a veteran?

*November 13, 2011*

**4th grade math**

Please help solve this word problem Sara traced circle stencils for her project. She needs 7 rows of 9 circle stencils. She thought that 7 rows of 9 is the same as 3 rows of 9 and 2 rows of 9. Is this correct? Thanks

*November 10, 2011*

**4th grade Math**

thanks again Ms. Sue :-)

*November 3, 2011*

**4th grade Math**

hello, I'm helping my son with his assignment but unsure if the answer is correct. Please help advise. Milton needs to find the product of two numbers. One of the numbers is 9. The answer also needs to be 9. How will he solve this problem? Explain. 3 x 3 = 9 or 1 x 9 = 9 ...

*November 3, 2011*

**Science plz help**

Igneous rock is produced by volcanoes. What do you know about the activity on Earth during the time the oldest layer of rock was produced?

*October 27, 2011*

**SCIENCE**

Igneous rock is produced by volcanoes. What do you know about the activity on Earth during the time the oldest layer of rock was produced?

*October 27, 2011*

**SCIENCE**

What are they asking in the question?

*October 27, 2011*

**SCIENCE**

Igneous rock is produced by volcanoes. What do you know about the activity on Earth during the time the oldest layer of rock was produced?

*October 27, 2011*

**4th grade math**

Please help advise if my answer is correct Is the solution of 25 + n = 30 greater or less than 30? Explain how you know without solving it? By looking at the equation, I know that the value of the n = would be 5. It is not greater or less. It should be equal. Please let me ...

*October 25, 2011*

**4th grade math help**

Thanks much

*October 25, 2011*

**4th grade math help**

Explain how the variable B has two different values in the two equations 6 - B = 5 b = 1 B + 5 = 15. B = 10 Thanks!

*October 25, 2011*

**4thgrade homework help**

Write two addends with a Sumer of 258? Please help! Thanks

*October 24, 2011*

**Social Studies**

In 1979 who became the first woman to be honored on a circulating coin?

*October 13, 2011*

**trig**

Suppose that the point P(13,-30) is on the terminal side of the angle theta in standard position. What is sin(theta)? Give your answer to the nearest thousandth

*September 27, 2011*

**trig**

Suppose that the point P is the point on the unit circle that is associated by the wrapping function with the number 31. In which quadrant is the point P located?

*September 27, 2011*

**math**

Longest multiplication combination for 120?

*September 6, 2011*

**Biochem**

The pK of acetic acid is 4.76. Which statement is true at pH 5.0? [A^-] = [HA] [A^-] < [HA] [A^-] > [HA]

*August 28, 2011*

**Heat!!!**

no i will not make out with you!

*July 5, 2011*

**AP World History Please help**

Please help me. Under which ruler was religious tolerance and Hindu-Muslim intermarriage was allowed? Which social group is going to rise to prominence because of trade with the new world? How did exploration of the new world transition from conquest to settlement in the new ...

*June 24, 2011*

**MATH**

what is the range of f(x)= 3sin(bx+d)

*June 15, 2011*

**MATH**

what is the period of the graph f(x)=3secantx

*June 14, 2011*

**social studies**

what people in world history gained wisdom??

*June 4, 2011*

**Algebra 2**

I have to make a design on a graphing calculator using the first quadrant. I have to use linear, quadratics, circles, absolute value, and elipse. Please help.

*May 11, 2011*

**calculus**

the integral of (1+4x^2) is (x+(4/3)x^3)

*April 27, 2011*

**math**

(6t-2)(t-4)

*April 27, 2011*

**Physics**

Thank you

*April 27, 2011*

**Physics**

A disk with a rotational inertia of 7 kgm^2 rotates like a merry-go-round while undergoing a torque given by (5+2t)Nm. At time 1s, its angular momentum is 5kg m^2/s. what is its angular momentum at 3s? I can't figure out how to start this problem.

*April 27, 2011*

**algebra**

37 and 1/2 % You just divide top by bottom and move the decimal two places to the right.

*April 27, 2011*

**Chemistry**

at a pressure of 405kpa the volume of gas is 6.00cm3

*April 6, 2011*

**math**

In a storm, a plane flew against the wind and took 9 hours to cover 3,600 miles. The return trip, traveling with the wind, took 1 hour less. find the air speed of the plane, and the speed of the wind.

*April 4, 2011*

**physics**

A demonstration gyroscope consists of a uniform disk with a 37-cm radius, mounted at the midpoint of a light 61-cm axle. The axle is supported at one end while in a horizontal position. How fast is the gyroscope precessing, in units of rad/s, if the disk is spinning around the...

*March 26, 2011*

**Math**

There are 6 different shapes in a bag, each student will draw one shape, trace it, then return it to the bag. How many outcomes are possible?

*February 16, 2011*

**englsh**

need help in comparing Mercutio in romeo and juliet with riff in westside story

*December 8, 2010*

**math**

write a four sentence paragraph about how you do a algorithm problem

*December 6, 2010*

**Statistics**

True or False, In simple linear regression analysis, if the error terms exhibit a positive or negative autocorrelation over time, then the assumption of constant variance is violated.

*December 5, 2010*

**Physics**

A box slides down a 38.5° ramp with an acceleration of 1.47 m/s2. Determine the coefficient of kinetic friction between the box and the ramp.

*December 2, 2010*

**Calculus 1**

Find the most general antiderivative of the function. Use C for any needed constant. f(u) = (u^4 + 7 sqrt(u)) / u^2 F(u) =

*November 8, 2010*

**english**

Could someone please check for me? I have to list the adverb and then list the word the adverb modifies. 1. She is particularly interested in sports. 2. Have you ever climbed a mountain? 3. Which part of the assignment would you do next? 1.particularly-is interested 2.ever-...

*November 2, 2010*

**11th grade physics**

Rachel pulls her 177N suitcase at a constant speed by pulling on a handle that makes an angle (-) with the horizontal. Using frictional force on the suitcase as 27N and Rachels force on 43N on the handle to calculate the net force. 1. What angle does the handle make with the ...

*November 2, 2010*

**College Critical Reading**

when critical readers analyze a written selection for possible obstacles they need to expose irrelevant appeals attack the person discussed in the selection rely on improper exploitation of persuasive capabilities of language

*October 26, 2010*

**8th grade math**

simplify: 3 to fourth power minus square root of sixty-four divide (10-12 squared)

*September 19, 2010*

**media**

what is the significance of immediate news media delivery on culture?

*September 10, 2010*

**algebra**

what is -2=6/7p

*August 26, 2010*

**English**

Thanks, Writeacher! I really appreciate that!

*July 9, 2010*

**English**

Which of the following choices is not necessary information for a works cited list? A. the publisher's name B. The number of pages in the book C. date of publication Is B correct? Juct checking, Thanks!

*July 9, 2010*

**English**

Which of the following is the bst example of a citation reference for a work by one author? a. Marks 1999 B. (Marks, Bill.1999) c. (Marks-1999) d. Marks et.al. 1999 e. none of the above I know that C and D are wrong I think A is wrong as it has no punctuation. for B, I think ...

*July 9, 2010*

**English**

When doing a research, a current source is a useful one. T or F? I think it's T as a current one would give more accurate information. Thanks.

*July 8, 2010*

**English**

So is the answer C? Thanks

*July 8, 2010*

**English**

Why not? Doesn't meditate mean think or plan? If yes, I think B is correct as we have to think about what the thesis statement is and what we are going to write in the essay.

*July 8, 2010*

**English**

One possible method to begin an essay is A. to paraphrase B. to meditate C. to ask a question B, right? Thanks.

*July 8, 2010*

**Grammar**

Wait a second. But is "Take public transportation" an independent clause? i don't think it is.

*July 8, 2010*

**Grammar**

Oh, sorry about that.

*July 8, 2010*

**Grammar**

Oh, I see. Thanks!

*July 8, 2010*

**English**

I sat proudly on Joe, my pinto, as we marched around the ring in the pony competition at the fairgrounds. I had worked nights for two years to get the money to buy him, worked hard to train him, and here we were. Th conclusion above is an example of: A. editing with a ...

*July 8, 2010*

**English**

Which of the following choices is a strategy that can help speed up reading? A. external distractions B. Using a penor pencial as a pacer C. Use subvocalization I think both B and C are correct. But I could only choose one answer. What do you guys think the answer should be? ...

*July 8, 2010*

**HIstory**

How did the Industrial Revolution impacted American Society economically, socially, politically, and morally.

*May 4, 2010*

**Calculus- math**

thank you!!!

*May 3, 2010*

**Calculus- math**

integral of (2x) / [(x+2)(x+1)]

*May 3, 2010*

**math**

the area of a trapezoid is 45 square centimeters. the bases of the trapezoid are 10 centimeters and 8 centimeters what is the height of the trapezoid?

*April 22, 2010*

**chemistry**

All the following species are best described by writing at least two Lewis structures EXCEPT a. O3. b. SO2. c. NO2- d. SO3-2 e. SO3.

*April 14, 2010*

**Chemistry**

All the following species are best described by writing at least two Lewis structures EXCEPT a. O3. b. SO2. c. d. e. SO3. Explanation thanks

*April 13, 2010*

**algebra 1**

(1,3) and (-2,-4) is m= 1/2

*April 11, 2010*

**Algebra 1**

3+6x<9 -3 -3 6x<6 x<1 This is right or wrong

*April 11, 2010*

**Algebra 1**

-5 [54-(99-18)] -5[54 +99 +19] -5 [ 153+19] -5[172] -860 f(x)=2x²-5x How can I simplify -860 to fraction? I know something like - 860/100

*April 11, 2010*

**Algebra 1**

x+9y=8 (1) x=3-9y (2) x (3-9y)+9=8 3x -9y +9y=8 3x = 8 x= 2.6 Is this correct?

*April 11, 2010*

**Physics**

A projectile is shot straight up from the earth's surface at a speed of 1.20×104 km/hr. How high does it go?

*April 6, 2010*

**math**

what would be a good window for the graph of f(x) = -x^5 + 5x^3 - 3x + 15 I think that -10< x<10: -10<y<25 would be good. Does this seem right?

*March 19, 2010*

**5th grade**

the sum of eighty-nine and a number

*March 2, 2010*

**space/astronomy**

that doesnt apply at 10AU.

*November 30, 2009*

**space/astronomy**

Rank the objects based on the strength of the gravitational force that would be felt by a spacecraft traveling at a distance of 10 AU from the center of each of the objects, from weakest to strongest. 1)red giant mass: 1Msun radius: 100Rsun 2)sun 3)white dwarf mass: 1msun ...

*November 30, 2009*

**Chemistry**

nvm, i did some reworking heres what my final answer endo-by exo-none exo-by exo-on exo-on can someone confirm please?

*November 22, 2009*

**Chemistry**

Okay, so basically i think i got all the endo and exo figured out because of either state change (heat released or used) but how do i figure out the "on", "by" or 'none' part? 1) exo 2)exo 3)endo 4)exo 5)exo

*November 22, 2009*

**pre-algebra**

19

*November 19, 2009*

**physical science**

What is the change in thermal energy of water in a pond with a mass of 1,000kg and a specific heat of 4,184j(kgdegreesc) if the water cools by 1 degree c

*October 27, 2009*

**physical science**

Please help.How can the IMA of a screwdriver be increased?

*October 20, 2009*

**science**

What does in science the 'cross' mean in the warning sounds?

*September 19, 2009*

**Physics Problem**

A runner hopes to complete the 10,000m run in less than 30 minutes. After exactly 27 minutes, there are still 1100m to go. The runner must then accelerate at 0.20 m/s^2 for how many seconds in order to achieve the desired time? I get 80.9 but I know that the answer is 3.1 ...

*August 30, 2009*

**Math 117**

1.) A rectangular solid and a circular cylinder have the same volume and the same height. The base of the rectangular solid is a square. Which (if any) of the following statements are true? (i) The rectangular solid and the cylinder have the same base area. (ii) The ...

*August 20, 2009*

**Algebra**

Could someone work this out for me? Someone says the answer is 2.34 x 10^-6 but I think it's 2.34 x 10^-4. 2 x 10^-3 = 3 x 10^8 x 1/6 x pi x d Solving for d. Sorry it's kinda messy.

*August 12, 2009*

**Physics**

How would one determine the percent uncertainty in theta and in sin of theta for the following: 1) theta = 15.0 degrees +/- 0.5 degrees 2) theta = 75.0 degrees +/- 0.5 degrees I'm not sure whether I divide or use some kind of formula.

*August 11, 2009*

**Physics**

So, would that make it 8.76*10^-2? If so, what would the units be?

*August 10, 2009*

**Physics**

An average family of four uses roughly 1200 liters (300 gallons) of water per day. (One liter = 1000 cm^3.) How much depth would a lake lose per year if it uniformly covered an area of 50 square kilometers and supplied a local town with a population of 40,000 people? Consider ...

*August 10, 2009*

**Physics**

GPS can be used to determine positions with great accuracy. The system works by determining the distance between the observer and each of the several satellites orbiting Earth. If one of the satellites is at a distance of 20,000 km from you, what percent accuracy in the ...

*August 10, 2009*

**Spanish**

A donde vas a comer cuando tienes hambre

*April 6, 2009*

**8th grade**

What is the name of the large island that is part of New York?

*March 23, 2009*

**Chemistry**

What is the energy of an electron in the 2s orbital of a hydrogen atom?

*February 9, 2009*

**6th grade**

I need to come up with some math questions about the solar system.

*October 28, 2008*

**geometry**

Thank you very much. I could explain it (I thought) but couldn't express it in math terms. Thanks again

*October 8, 2008*

**geometry**

We are learning about proofs. We drew lines between noncollinear points. Our table showed 2 points >> 1 line segment, 3 point >> 3 line segments, 4 points >> 6 line segments, 5 points >> 10 line seg, 6 points >> 15 line seg. etc. Write an ...

*October 8, 2008*

**3rd grade**

3rd graders = x 4th graders = x 5th graders = x + 6 (this is because there are 6 MORE 5th graders than 3rd grade) Make an equation x + x + (x + 6)= 33 group like terms 3x + 6 = 33 subtract 6 from both sides to get x alone 3x = 27 divide both sides by 3 x = 9 PLUG IN 9 for x ...

*October 8, 2008*

**economics**

where do stocks go after being sold

*September 15, 2008*

**personal finance**

where do stocks go after being sold

*September 15, 2008*

**math**

coleen hid a coin equal rto fraction of a dollar behine her back. She said the freaction is smaller than 1/2 and greater than 1/20. What two possible coin could she have hidden. How do you know? Then said it was 5 time greater 1/20. what coin did she have.

*May 15, 2008*

**MATH**

THERE ARE 7 GIRLS ON A BUS EACH GIRL HAS 7 BACKPACKS IN EACH BACKPACK, THERE ARE 7 BIG CATS FOR EVERY BIG CAT THERE ARE 7 LITTLE CATS ? HOW MANY LEGS ARE THERE IN THE BUS?

*December 13, 2007*

**history**

in what direction do you travel to britan fom the us?

*November 30, 2007*

**spelling**

not a smile, but a

*October 29, 2007*