Thursday

May 26, 2016
Total # Posts: 3,432

**physics**

a 2.0kg block is pushed against a spring that has a force constant of 10 n/m. the spring is compressed 10 cm. when the block is released, it slides across a rough surface for 25 cm before it stops. find the coefficient of friction between the block and the surface.
*February 6, 2011*

**Algebra**

Flying against the wind, Lisa made the flight from Reno in 3 h with a steady airspeed of 400km/h. Returning later with a tail wind that had doubled in magnitude, she landed 225 km beyond the starting point in 3 h. What was the original wind speed? How far from Reno did she ...
*February 6, 2011*

**math**

I thought your answer was funny, anon. Brianna, do you know what bisect means? You need to look up that word if you don't.
*February 2, 2011*

**Algebra- is my answer right**

Simplify. (2b^-4 c^6)^5 I get b^20/32c^30 Is that right? Write your answer using only positive exponents.
*February 1, 2011*

**Algebra- is my answer right**

Thanks, I see what I did, I squared when adding to the right side
*February 1, 2011*

**Algebra- is my answer right**

Graph the Circle x^2+y^2+4x-2y-20=0 I get: (x^2+4x)+(y^2-2y)=20 (x^2+4x+4)+(y^2-2y+1)=20+16+4 (x+2)^+(y-1)^2=(40/2)^2 But I don't think its right can you help me with what I did wrong? Thanks
*February 1, 2011*

**Algebra- is my answer right**

I see what I did, Thanks
*February 1, 2011*

**Algebra- is my answer right**

Use the rational zeros theorem to list all possible rational zeros of the following. -2x^3-x^2-4x-5 I got +-1,+-5+-,5/2,+-1/2 Be sure that no value in your list appears more than once.
*February 1, 2011*

**Algebra**

logx1/64=-3 Solve for x
*February 1, 2011*

**Algebra**

The midpoint of (AB) is M = (1,3). One endpoint is A =(8,-2). Find the coordinates of the other endpoint B.
*January 28, 2011*

**Algebra**

Add: (2/3x^2-4x-1)+(1/3x^2-19x+28) Simplify as much as possible.
*January 28, 2011*

**Algebra**

I figured it out.
*January 28, 2011*

**Algebra**

Suppose that the functions q and r are defined as follows: q(x)=2x+1 r(x)=-2x^2+1 Find the following: (qOr)(4)= (rOq)(4)=
*January 28, 2011*

**5th grade math**

ok just subtract.first subtract the denominator the the numetator.ooo and ifyour teacher is picky like mine the reduce it
*January 27, 2011*

**algebra2**

48x3z5y - 36x3z3y4 + 48x2z5y The GCF of 48, 36, and 48 is 6; " x^3, x^3, x^2 is x^2; " z^5, z^3, z^5 is z^3; " y, y^4, and y is y (you figure it out because its the most they all have in common) 6x^2z^3y( ) Now take that out and see what's left. Post it if ...
*January 26, 2011*

**math**

No, Raluca, it's 3:2.
*January 26, 2011*

**math**

There are 15 boys. Out of 25 students, that means there are 10 girls. Reduce 15/10 for your answer.
*January 26, 2011*

**math**

What are the directions...?
*January 26, 2011*

**math**

Mick, take 14 objects (maybe pencils or paper clips) and try to split them in 2 equal groups. See if you're able to.
*January 26, 2011*

**analogies**

scripted? no idea..
*January 26, 2011*

**Algebra**

The polynomial function f is defined by f(x)x^4-3x^3-2x^2+4x+5. Use a graphing calculator to find all the points (x,f(x)) where there is a local maximum. Round to the nearest hundredth
*January 25, 2011*

**Math**

A loan of $37,000 is made at 3%interest, compounded annually. After how many years will the amount due reach $49,000 or more? (Use the calculator provided if necessary.) Write the answer as a whole number. ****I get 1.03^10 = 49,724.91 So is the answer 10 years at 49,725.00?
*January 24, 2011*

**Algebra**

I get 1.03^10 = 49,724.91 So is the answer 10 years at 49,725.00?
*January 24, 2011*

**Algebra**

A loan of $37,000 is made at 3%interest, compounded annually. After how many years will the amount due reach $49,000 or more? (Use the calculator provided if necessary.) Write the answer as a whole number.
*January 24, 2011*

**Math**

Multiply. (-1/5) X(-7)X(4/7) Write your answer as a fraction in simplest
*January 24, 2011*

**Math Please Help**

Thank You so much!
*January 24, 2011*

**Math Please Help**

I still can't get it, I will just hit the I don't know button because I'm stressing over it to much.
*January 24, 2011*

**Math Please Help**

The answer cannot be in a radical form
*January 24, 2011*

**Math Please Help**

Solve for v. v+6/5=3/5v-7/3 Simplify your answer as much as possible.
*January 24, 2011*

**Algebra**

f(x)=4x^-5x f(0) f(-1) f(2) All you have to do is put the number given in for x. I will do the first one for you. 4(0)^-5(0) 0^0=1
*January 23, 2011*

**College Algebra**

Ok I will try to figure it out and ask if I need anymore questions. thanks for your help
*January 22, 2011*

**College Algebra**

Please help me Divide. (9x^3-10+19+6x^4)/(-2x^2+3x-3) Write your answer in the form Q(x)+ R(x)/ -2x^2+3x-3, where Q(x) is the quotient and R(x) is the remainder.
*January 22, 2011*

**pre algebra**

3w+2+3w=-4+9 6w+2=5 6w=3 w=1/2 Now put 1/2 back into the original problem. 3(1/2)+2+3(1/2)=-4+9
*January 22, 2011*

**math**

10 * 3 = ? Count by 10's three times.
*January 21, 2011*

**math**

I would round by doing 20 * 30, since 25 is exactly halfway between. 2 * 3 = 6, put 2 0's on the end..600
*January 21, 2011*

**5th grade **

Which of those numbers do you see the most often? That is your mode. Example: 1, 3, 6, 1, 2, 3, 6, 3..your mode is 3 because it occurs most often.
*January 20, 2011*

**physics**

You're at a Red Rocks concert on a cold January evening. The temperature is -8 degrees Celsius and you've got amazing front row tickets, the players are only 5.5 m away. How long does it take for sound to arrive to you from the stage? Calculate your answer in seconds,
*January 20, 2011*

**English**

1. Good. summer house? cottage? 2. Any 3. Any 4. bobsledding, not I was involved in
*January 20, 2011*

**Math - Calculus**

Integration of (sinx + cosx)^2 from 0 to pi/2. I get pi/2 + 1 as my final answer... wondering if that's correct?
*January 19, 2011*

**physics**

a 2kg mallet is dropped from a height of .6m onto a nail, driving it 3.5 cm into the wood. What is the average force exerted by the mallet on the nail? thanks
*January 19, 2011*

**Chemistry**

A 10.8g sample of a gas has a volume of 5.25L at 25 degrees Celsius and 766mmHg. If 2.3g of the same gas is added to this constant 5.25L volume and the temperature raised to 68 degrees Celsius, what is the new gas pressure?
*January 18, 2011*

**Math**

12:15
*January 17, 2011*

**alegebra 2**

What are the directions...
*January 17, 2011*

**Math**

In a mathematics olympiad there are 20 finalists. In how many ways can three equal prizes be awarded, assuming that two prizes cannot be given to one finalist? In how many ways can a first, second and a third place be awarded? (I understand that Permutations and Combinations ...
*January 17, 2011*

**physics**

A model rocket leaves the ground, heading straight up at 47 m/s. (a) What is its maximum altitude? m What are its speed and altitude at each of the following times? (b) 1 s m/s m (c) 4 s m/s m (d) 8 s m/s m
*January 16, 2011*

**chem**

the gap between two brain cells is 0.0020 nm. how many meters is this
*January 15, 2011*

**math**

13c+7d=99.8 12c+7d=84.11 Multiply the 2nd equation by -1 13c+7d=99.8 -12c-7d=-84.11 c= Plug that back into either original equation to solve for d.
*January 15, 2011*

**English**

1 is kind of awkward. I would change come to take.
*January 14, 2011*

**pre algebra**

the midpoints of each side of triangle NOT are connected to make a smaller triangle inside triangle NOT. If the area of triangle NOT is 16 in squared, what is the area of the smaller triangle?
*January 13, 2011*

**algebra**

what is the height of a solid with a volume of 120m3 and a base area of 30 m2
*January 12, 2011*

**English**

How do I write an outline for a paper?
*January 12, 2011*

**Spanish**

You have to post it first.
*January 12, 2011*

**math**

300 * 3 = 900
*January 11, 2011*

**Math**

They were different size pizzas..
*January 10, 2011*

**math geometry ITT**

All of the angles in a triangle total 180, so 180-40=140, 140/2=70
*January 10, 2011*

**Math**

2,300-2,500=?
*January 9, 2011*

**7th Grade**

Z+5/7=3 z=3-5/7 z=?
*January 9, 2011*

**com170**

Also: definitely, not defiantly lose, not loose
*January 9, 2011*

**spanish**

If you are struggling, maybe write it in English first, and then work on translating it to Spanish. You don't need "examples" of me telling you what I did last week. Just be sure that you understand when you need to use the preterite. If not, re-read that section...
*January 8, 2011*

**english**

Grammar mistakes: insure should be ensure (2 x), 4. I have learned that (not this) in life...at a quick glance the verb tenses appear to be correct, but they were not thorougly checked.
*January 8, 2011*

**algebra**

P + q for p = 32 and q = 18 5 P + q= ? 5 Should this say 5p+q? Not sure what the random 5 is there for. Either way, just plug in the numbers. If it is 5p+q, it's 5(32)+18. Find domain of the function g (x) = 10 4-7x, 4-7(10)
*January 7, 2011*

**errors**

-0.7x<-35 Divide both sides by -0.7. When you do this the sign flips. x>50
*January 7, 2011*

**accounting**

You have been asked to speak at a career fair for high school students in your home town. Specifically, you are making a presentation about your role as an accountant. Describe for the students the primary objectives of accounting. Explain the basic terminology of the ...
*January 7, 2011*

**algebra**

The slope is -3 and the y intercept is -5.
*January 7, 2011*

**Algebra**

Donna, almost all of your posts contain an equation or something similiar without a question. You have to tell us what the directions are. We aren't mind readers.
*January 7, 2011*

**math**

You're going to need to use a ruler. We can't help you online with this..
*January 6, 2011*

**Math**

8x+2y+11=0 2y=-8x-11 y=-8/2x-11/2
*January 6, 2011*

**Math 208**

x+3y=2 -x+y=1 so y=x+1, substitute that into the 1st x+3(x+1)=2 x+3x+3=2 4x+3=2 4x=-1 x=-1/4 Substitute that into either of the original equations to solve for y.
*January 6, 2011*

**precal**

Why is there no corresponding point on tan^-1(x) for the (135,-1) on the graph tan(x). Thanks!
*January 6, 2011*

**7th grade math**

6+x=2x-14 Letters on one side, numbers on the other. Subtract x from both sides. 6=x-14 Add 14 to both sides. 20=x
*January 6, 2011*

**math**

The lines mean absolute value. It means to make whatever is inside positive. |2|=2 |-2|=2 -|2|-2 -|-2|=-2 Get it? Always do the absolute value part first.
*January 6, 2011*

**math**

Jess is right, it's add. 5 * 3 = 15. 5 * 2 = 10 and 5 * 1 = 5, 10 + 5 = 15.
*January 6, 2011*

**math**

(3.5x10^-3)(4.2x10^7)
*January 5, 2011*

**math**

6(n+2)-(4-n)
*January 5, 2011*

**english**

It's a personification, because it gives the lake a human quality (being wrinkled).
*January 4, 2011*

**math **

No solution.
*January 4, 2011*

**pre algebra**

All of the whole numbers between -4 and 6, not including them since it's not <=. -3, -2, -1, 0, 1, 2, 3, 4, 5.
*January 4, 2011*

**math **

I'll do the first one. x+8>15 You want to get the letters on one side and numbers on the other. Subtract 8 from both sides. x>7
*January 4, 2011*

**algebra 2**

2x+5y=10 x-3y=-6 Multiply the 2nd equation by -2 so that the x's cancel. 2x+5y=10 -2x+6y=12 Add the lines together. 11y=22 Solve for y, replace that in either original equation to solve for x.
*January 4, 2011*

**MATH PRE-ALGEBRA**

It should be an open dot because it's an inequality. It would be a closed dot if it was an equality, such as x=3.
*January 3, 2011*

**Algebra 1**

It's not a solution. It would have to say x>=-4 for that to be true. -4 is not more than -4.
*January 3, 2011*

**algebra**

half
*January 3, 2011*

**math **

Perimeter means to add the sides. Pool A: 10+2+10+2 Pool B: 7+7+7+7 Which is more?
*January 3, 2011*

**algebra**

2x+7+14=2x+21
*January 2, 2011*

**algebra**

9(2)-4.5=?
*January 2, 2011*

**Algebra**

.5x+7<=1.3x-8 7<=.8x-8 15<=.8x 18.75<=x or x>=18.75
*January 2, 2011*

**Math**

Should that say x^2+8x+15? I think it should..
*January 2, 2011*

**math**

what is the inverse function of f(x)=3/x-4
*January 2, 2011*

**integrated algebra**

8y-11<5 or 13<4y-7 8y<16 or 20<4y y<2 or 5<y, y>5 so y<2 or y>5
*January 2, 2011*

**algebra**

never
*January 2, 2011*

**geometry**

All I can suggest to do is draw it. I got (-3,-2)..im sure it's something like that.
*January 2, 2011*

**eng 20 F**

Try searching No Fear, Shakespeare online. It's very helpful.
*January 2, 2011*

**Social Studies **

Louisiana
*January 2, 2011*

**algebra 2**

(-3)^2-6(-3)+3
*January 1, 2011*

**math**

Just reduce each..15/30=1/2 and so on
*December 31, 2010*

**Geometry**

Since it's an equilateral triangle, AB=BC. 3x=2x+12, solve for x.
*December 29, 2010*

**Math**

You just divide it. 19/3=6 remainder 1, and the denominator stays 3.
*December 29, 2010*

**pharmacy tech**

To find out if a drug causes nausea, you would look in this section of the drug monograph
*December 29, 2010*

**math**

i/o 1 5 +4 2 8 +6 4 14 +10 8 ? +16 8+16=? (Input is doubling.)
*December 28, 2010*

**algebra**

3/4=60/x, cross multiply and solve
*December 27, 2010*