Saturday

February 28, 2015

February 28, 2015

Total # Posts: 454

**Math**

The perimeter of a rectangular deck is 175 feet. The length of the deck, L, is 6 feet longer than 2 times the width, W. Which system of equations can be solved to determine the length and width, in feet, of the deck? What is the correct formula and why? a) 2L+2W=175 L=2-6W b) ...
*September 20, 2012*

**6th grade science**

Thanks!
*September 16, 2012*

**6th grade science**

Is latitude the up and down lines on a map?Or the side to side lines? Thanks
*September 16, 2012*

**6th grade science**

thanks
*September 16, 2012*

**6th grade science**

What is porosity and permeability? Thanks
*September 16, 2012*

**6th grade science**

thanks
*September 16, 2012*

**6th grade science **

What is a A topographic map used for? thanks
*September 16, 2012*

**6th grade science**

never mind my big brother helped me but thanks anyway
*September 16, 2012*

**6th grade math**

THANKS!
*September 11, 2012*

**6th grade math**

f + (–15) = –32
*September 11, 2012*

**math**

thanks
*September 11, 2012*

**math**

Subtract. –84 – 55 the answer is -29 right?
*September 11, 2012*

**history**

Who was the Danish immigrant who photographed immigrant life to make people aware of the problems immigrants faced in the United States?
*September 10, 2012*

**HISTORY **

Which series of events is in the correct chronological order? Plessy v. Ferguson, ratification of the 14th Amendment, end of Reconstruction ratification of the 14th Amendment, end of Reconstruction, Plessy v. Ferguson ratification of the 14th Amendment, Plessy v. Ferguson, end...
*September 10, 2012*

**Science**

weather . com it's like this because you can't post internet addresses without a url
*September 10, 2012*

**history**

Lee Yick took his case to the Supreme Court and lost because, under the 14th Amendment, only U.S. citizens had the rights of due process and equal protection of the laws true or false
*September 10, 2012*

**History Christopher Columbus**

Well every body thinks it was Christopher Columbus,but actually it was people who walked over a huge land bridge during the ice age.Some people also think that they canoed over to America.
*September 10, 2012*

**math**

thanks
*September 10, 2012*

**math**

I'm in sixth grade What is the value of |–46| ?
*September 10, 2012*

**math**

What value of f makes the equation true? f – 18.4 = 11.8
*September 10, 2012*

**math**

Which equation could be used to find the perimeter of an isosceles triangle, with two sides 13 cm long, a base 10 cm long and a height of 12 cm? A. P = (10 × 12) ÷ 2 B. P = 2 × 13 + 10 C. P = 13 + 10 + 12 D. P = 2 × 10 + 13
*September 10, 2012*

**algebra**

How do you Simplify
*September 6, 2012*

**3rd math**

okay Math genius! Help me out here. I am a number greater than 99 and less than 1,000. Two of my digits that aren't next to each other are the same. My tens digit could not be greater and it is 1 more than my hundreds digit. What number am I?
*September 6, 2012*

**math**

the distance between new york city and boston is 189.9 miles as the bird flies.how far is it in kilometers?
*September 5, 2012*

**math**

joe drank 4 liters of water on monday and 4 deciliters of water on tuesday.how much more water did he drank on monday than on tuesday
*September 5, 2012*

**Math**

Write a 7 digit numeral with 6 in the ones place, 3 in the thousandths place, 1 in the thousands place, 2 in the tenths place, and 0's in a ll the other places?
*September 5, 2012*

**social studies**

whatevent led the United States protest German actions in 1915
*July 26, 2012*

**math**

v(t)= Ce^(k(square root(t)) Suppose that the dealer, who is 25 years old, decides to sell the card at time , sometime in the next 40 years: 0< or equal to t < or equal to 40. At that time , he’ll invest the money he gets for the sale of the card in a bank account ...
*May 23, 2012*

**chemistry**

Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure. Its formula can be written as Na2CO3·x H2O, where x is the number of moles of H2O per mole of...
*May 15, 2012*

**chemistry**

Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure. Its formula can be written as Na2CO3·x H2O, where x is the number of moles of H2O per mole of...
*May 15, 2012*

**Chemistry**

What is the oxidation state of: O2 HSO4- Na2HPO4 CrCl3
*May 3, 2012*

**English**

And you might want to fix the spelling error "They key" to "The key" (:
*May 1, 2012*

**English**

That sounds pretty good. It seems as though you might have copied some of that off Wiki... I'm not accusing you of anything so dont get offended. but that sounds good!
*May 1, 2012*

**Chemistry**

Write the IUPAC name for straight-chain hydrocarbon with this formula: CH3CH2CH2CH2CH2CH2CH3 Write the IUPAC name for any branched-chain hydrocarbon with this formula:C9h20
*April 29, 2012*

**chemistry **

how much 10M HNO3 must be added to 1L of a buffer that is .010M acetic acid and .10M sodium acetate to reduce the pH to 5. pKa=4.75
*April 18, 2012*

**chemistry**

To what volume must 481 mL of 12 M Ca(OH)2 solution be diluted to make a 2 M Ca(OH)2 solution? a)1.352L b)2.886L c)2.10833L d)none of the above
*April 4, 2012*

**Crime scene chemistry**

What would happen to the denisty of a plastic sample if an excessive number of air bubbles were allowed to accumulate on the plastic surface when placed into the solution?
*March 28, 2012*

**Spelling**

The homework question that I just posted at 7:03pm is for a kindengarden.
*March 21, 2012*

**Spelling**

The teacher didn't define, this is for a kindengarden class.
*March 21, 2012*

**Spelling**

The homework assignment is first the child has four spelling words to write five times and memorize and then the homework assignmen says make three clusters of words using fl for example fly.
*March 21, 2012*

**Spelling**

I'm sorry I typed the question wrong. The question is: Make three cluster words using f l
*March 21, 2012*

**Spelling**

What does it mean when the homework says: Make three F L cluster words example fly?
*March 21, 2012*

**Algebra **

composit function 2 f(x)-4g(x) if f(x)= x2+4x-1 and g(x)= 2x-4
*March 2, 2012*

**physics**

a car is traveling 20.0 m/s when the driver sees a child standing in the road. he takes 0.80 seconds to react, then steps on the brakes and slows at -7.0 m/s squared. how far does the car go before it stops?
*February 27, 2012*

**Bus Finance**

You want to purchase a home. cost $165,000. you have $40,000 downpayment. you want to finance rest at 3.5% for 15 years. how much will monthly mortgage be? How much in total will you pay over the 15 years even counting the downpayment? I came up with payment of $893.6 for ...
*February 6, 2012*

**Bus Finance**

so I was supposed to divide not multiply for my initial amount and then if I had used those correctly with the NOM% and EFF I should have come up with it correctly? I will try it again. I could swear in my notes he said we had to multiply. Thanks Again
*February 3, 2012*

**Bus Finance**

I have inherited $40,000. I want to save it for 5 years to make down payment on new home. I get info from two diff banks. Bank A - 5.78% APR with semi annual compounding. Bank B - 5.75% APR with daily compounding. Which bank would you use to maximize your return? For Bank A - ...
*February 3, 2012*

**Bus Finance**

to continue. it asks how much in total you will pay over the 15 years based on mortgage and down payment. I used the (893.60*12)(15)+40,000=200848.00. It then asks what portion of that is interest. I used the 200848.00FV 125000PV 180N with the I/YR=3.17%.
*February 3, 2012*

**Bus Finance**

You want to purchase a home. cost $165,000. you have $40,000 downpayment. you want to finance rest at 3.5% for 15 years. how much will monthly mortgage be? How much in total will you pay over the 15 years even counting the downpayment? I came up with payment of $893.6 for ...
*February 3, 2012*

**Business Finance**

you are saving for your child's college.. there are 15 years before they will be in college. you have saved 0 so far. Your goal is $98,000. assume annual in rate is 8%. how much must you save at the end of each year in equal amounts to reach your goal? I know that with the...
*February 3, 2012*

**Chemistry**

A B & C are correct D.Should say: 2F---Fsub2. Exothermic. One bond is formed F-F 0-155= -155kJ/mol.
*January 22, 2012*

**Physics (my last problem)**

A 3.4 kg ogject to the right at 3.5 m/s hits a stationary object of mass 2.7 kg. After the collision the 2.7 kg object moves to the right at 1.8 m/s. A) What is the final verlocity of the 3.4 kg object? B) What is the total kinetic energy og the objects before the collision? C...
*December 19, 2011*

**Physics -.-**

thank you soooooo much(:
*December 19, 2011*

**Physics -.-**

A projectile is shot horizontally at 220 m/s from the top of a 620 m high cliff. A) How long till the projectile hits the ground? B) How far from the base of the cliff does the projectile land? I am gonna be honest. I have no idea how to do any of my Physics homework. ): I ...
*December 19, 2011*

**AP US History**

How did the McKinley Tariff Act hurt the farmers?
*December 16, 2011*

**more physics ):**

A tennis player places a 51 kg ball machine on a frictionless surface, as shown below. The machine fires a 0.067 kg tennis ball horizontally with a velocity of 33.4 m/s toward the north. What is the final velocity of the machine? Can you please EXPLAIN how to get the answer?!
*December 15, 2011*

**physics )':**

A 66.5 kg ice skater moving to the right with a velocity of 2.80 m/s throws a 0.16 kg snowball to the right with a velocity of 20.4 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
*December 15, 2011*

**trig (pre-cal class)**

Suppose è is an acute angle of a right triangle. For this function, find the values of the remaining five trigonometric functions of è. Round to four decimal places. sin è = 0.1 cos è = tan è = cot è = csc è = sec è =
*December 15, 2011*

**Geometry**

If m<DBC=10x and m<ACb=4x^2, find m<ACB. The quadrilateral ABCD is a rectangle. B ------------- C | | | | | | | | A -------------|D There are diagonal bisectors inside the rectangle but I could not draw them in. The diagonals are DB and CA and the point in the middle ...
*December 11, 2011*

**8th grade math**

Okay, so you have two variables, let's call them x and y. x will be the weight of the water when the tank is full, and y will be the weight of the tank. So you can get two equations from the question: .4x+y=80 (1) x+y=140 (2) and now you can do elimination by subtracting (...
*December 7, 2011*

**chemistry**

8.38% thank you very much
*December 4, 2011*

**chemistry**

What is the mass pecent of an aqueous sodium hydroxide in which the mole fraction of NaOH is 0.162? The density of the solution is 1.3311 g/ mL
*December 4, 2011*

**statistics**

what is the sample mean for extrinsic value by gender
*November 22, 2011*

**Geometry**

the measure of each exterior angle is 45. how many sides does the polygon have?
*November 20, 2011*

**math**

What is the principle of powers? Describe in your own words. When solving a radical equation, how do we use the principle of powers to eliminate radicals? Demonstrate with an example.
*November 17, 2011*

**Math**

solve: 4x^2 + 14x = 0 help me solve
*November 17, 2011*

**Math**

Can you show us how to find the discriminant of the quadratic x^2 + 2x -2 =0
*November 17, 2011*

**math **

create the equation: x=2 and x=5
*November 15, 2011*

**Math**

Make an equation that has solutions x= 9 and x = -2/3
*November 14, 2011*

**math**

Multiply ã7(ã10-ã6)
*November 13, 2011*

**Math**

Add simplify by collecting like radical terms if possible 3ã45+4ã180
*November 13, 2011*

**math**

so I would have abd answer of 4root symbol625^3
*November 13, 2011*

**math**

write an equivalent expression using radical notation 625 3/4 Help
*November 13, 2011*

**math**

add simplify by collecting like radical terms if possible assuming that all expressions under radicals represent nonnegative numbers ã2a+5ã8a^3 i have the answer as (1+10a)squareroot symbol 2a is this correct?
*November 12, 2011*

**math**

Subtract simplify by collecting like terms if possible 9 3ã4-3 3ã4 Would the answer be 6 3ã4
*November 12, 2011*

**math**

Find the following. Assume a and b can represent any real number 440ã(a+b)440 Is the answer a[b]
*November 12, 2011*

**math**

write an equivalent expression using radical notation 625 3/4 would this be 1/5^4 Otherwise I am lost
*November 12, 2011*

**math**

they are squre root symbols
*November 12, 2011*

**math**

Multiply (4ã6-12ã5)(2ã6+6ã5) Would the answer be 8ã64-72ã25 I donft think I am supposed to multiply the 4 and 6 or the 2 and 6
*November 12, 2011*

**math**

multiply ã7(ã10-ã6) so would this be ã70-ã42
*November 12, 2011*

**math**

rewrite with rational exponents (9ã5x^4y)^3 would this be (15x^64y^3)1/9 help
*November 12, 2011*

**math**

So would it be 10^11 right
*November 12, 2011*

**math**

Multiply and simplify by factoring ∜10,000*∜10,000,000 I get ∜100^9 I hope this is correct
*November 12, 2011*

**Math**

so the answer is 27 Square root symbol 2x^4
*November 11, 2011*

**Math**

Simplify by factoring Assume that all expressions under radicals represents non negative numbers 3square root symbol 162x8 I end up with 3x 3squareroot symbol 2x^5 I dont think this is correct help
*November 11, 2011*

**Math**

thank you
*November 9, 2011*

**Math**

Find the length of side a in the right triangle if b=12 and c=15 I have the length as 6 but I dont think this is correct Please help
*November 9, 2011*

**Math **

So was I correcdt
*November 9, 2011*

**Math **

What does it mean to refer to a 20 inch TV or a 25 inch tv set? Such ubits are refer to the diagonal of the screen. A 25 inch TV set also has a width of 20 inch what is its height? would I multiply 20 by the height to get the diagonal? I think the answer is 15 inches Please ...
*November 9, 2011*

**english**

Do you know what this matches and why? Primate:Primeval as Coelenterate:Medieval Deliberate:Archival Ingrate:Credible Migrate:Primal Thank you!
*October 25, 2011*

**math**

When you convert 1/4, you would divide 1 by 4 and get 0.25. So when dividing .39 by 250 you get... 0.00156
*October 25, 2011*

**Physics Honors**

An egg is thrown horizontally off the roof of SI, which is 60 meters high, with an initial velocity of 6.5 m/s. How long does it take to hit the ground? How far does it go in the x direction?
*October 23, 2011*

**Physics Honors**

Jason Kendall throws a baseball with a horizontal component of velocity 25 m/s. It takes 3.0 s to come back to its original height. Calculate its horizontal range, its initial vertical component of velocity and its initial angle of projection.
*October 23, 2011*

**Physics Honors**

How long will it take a shell fired from a cliff at an initial velocity of 800 m/s at an angle 30 degrees above the horizontal to reach the ground 150 meters below?
*October 23, 2011*

**Physics Honors**

A ball is kicked horizontally at 8.0 m/s from a cliff 80 meters high. How far from the base of the cliff will the stone strike the ground?
*October 23, 2011*

**Physics Honors**

A football is kicked with an initial velocity of 25 m/s at an angle of 45 degrees with the horizontal . Determine the time of flight, the horizontal distance, and the peak height of the long jumper.
*October 23, 2011*

**Physics Honors**

A soccer ball is kicked horizontally off a 22.0 meter high hill and lands a distance of 35 meters from the edge of the hill. Determine the initial horizontal velocity of the soccer ball.
*October 23, 2011*

**Physics Honors**

A pool ball leaves a 0.60 meter high table with an initial velocity of 2.4 m/s. Predict the time required for the pool ball to fall to the ground and the horizontal distance between the table's edge and the ball's landing location.
*October 23, 2011*

**Physics Honors**

A basketball is thrown horizontally from a window that is 22 meters high. If the initial velocity of the ball 18 m/s, find how long the ball takes to reach the ground and how far the ball lands from the building?
*October 23, 2011*

**Physics Honors**

The same rock is thrown upwards at an angle of 45 degrees. It travels 10 meters up to its maximum height. How far will it travel before it lands?
*October 23, 2011*

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