Monday

February 20, 2017
Total # Posts: 1,814

**probability**

We can recognize, that our mean squared error = var(Θ), so our final answer will be: 1/(1+t1^2+t2^2)

*April 2, 2014*

**Hiram Elementary School**

I don't believe this is a complete question

*February 25, 2014*

**Spanish 2 Help**

lee no leas

*February 12, 2014*

**Spanish 2**

Lee el libro! Leelo! (accent on first e) No leas el libro No lo leas limpia la casa limpiala (accent on first I)

*February 11, 2014*

**Global Studies (check please)**

yes Riley is right

*February 3, 2014*

**physics**

13.1 kg * m/s

*January 23, 2014*

**statistic**

3.80127(1.03605)^x

*December 15, 2013*

**Science help,please...**

Thanks Mr.? ! 100%

*December 9, 2013*

**Science help (just 4 questions)**

Avery is 100% correct. :)

*December 4, 2013*

**2 more History Questions**

Unknown, the correct answer is 1. D and 2. A

*October 3, 2013*

**assistent teacher**

I would say Powerpoint, Openoffices, and some other softwares just type in " Keynote " and download if you have a Mac. Also try Google Docs Presentation. And Sliderocket ( you can also add pics with it! ) Try 280 Slides or Prezi!

*May 26, 2013*

**Writing skills 1**

5. C. Of course this is the right answer!!

*May 9, 2013*

**Writing skills 1**

1. D. In formal English, we use words to say precisely what we mean. 3. D. Lawson crept silently up the stairs, but couldn't still his heartbeat. 4. D. Dear Sir 6. C. adjective 7. B. Finally 8. B. Psychological Effects of Nuclear Weapons 10. D. I am in receipt of your ...

*May 9, 2013*

**Soc. Studies**

ITS C

*April 8, 2013*

**Quantum Physics**

for 4 some one already gave you so you have: 4a: 1/sqrt(5) 4b 2/5 4c 1/2 4d 0

*April 6, 2013*

**7th Grade Social Studies**

10 is wrong... it is C

*March 30, 2013*

**7th Grade Social Studies**

The primary problem with urban sprawl in the west is the depletion of water resources. If this problem isn't solved, aquifers will dry up, farms will experience drought, water won't be available for irrigation. Another problem with urban sprawl is air pollution mixed ...

*March 29, 2013*

**Quantum Physics**

1/sqrt(2) -1/sqrt(2) 1/sqrt(2) 1/sqrt(2)

*March 15, 2013*

**Physics**

0.5, 0, 0, 0.5, 0, 0.5, 0.5, 0

*March 10, 2013*

**physics**

0.5, 0, 0, 0.5, 0, 0.5, 0.5, 0

*March 6, 2013*

**PHYSICS!!!**

0.0887 is the answer....correct on and say thanks.....

*February 27, 2013*

**Quantum Physics**

I X

*February 24, 2013*

**Quantum Physics**

7/9

*February 24, 2013*

**Physics**

Impulse is equal to Force*Time, so this is just 60*2=120 N*s

*February 16, 2013*

**Languege arts**

A B B C B A C A FALSE

*February 7, 2013*

**math**

a. early- .1 on time- .6 late- .18 cancelled- .12 b. mutually exclusive c. .7

*January 15, 2013*

**chemistryy**

5.043661*10^15

*January 12, 2013*

**chemistry**

4.7E-15

*January 11, 2013*

**Chemistry**

could you explain me this one A photon interacts with a ground state electron in a hydrogen atom and is absorbed... And I will explain you the formula

*January 11, 2013*

**math**

Well.. People have so stop arguing for one, because this girl needs help with the problem right? Please guys..

*December 3, 2012*

**7th grade math Ms. Sue please**

Somebody is right renina is wrong I got a 50%

*November 28, 2012*

**PreCalculus - Find Inverse**

replace f(x) with x and x^3 with y^3 in the equation and then solve for y ... Hope that helps !!

*November 27, 2012*

**physics help needed very urgent !!!**

The block in the figure below lies on a horizontal frictionless surface and is attached to the free end of the spring, with a spring constant of 55 N/m. Initially, the spring is at its relaxed length and the block is stationary at position x = 0. Then an applied force with a ...

*October 26, 2012*

**Science**

You have a stock solution of 3.5M glucose. You need a working solution of 0.5M glucose in a volume of 400ml. Explain how you make the solution. Also what is the concentration of the dilution solution?

*October 15, 2012*

**S.S**

Thanks Shawn Mendes is bae! lol

*October 10, 2012*

**English**

Lacey was right!(:

*May 13, 2012*

**child development**

3 is A 5 is C 9 is A 10 is B 11 is C Those are right because I did this test already. :) The ones I didn't mention already have the right answer.

*April 24, 2012*

**physics**

the output will decrease

*April 11, 2012*

**math**

I dunno, but maybe u can help me!

*March 1, 2012*

**Science**

You are correct,the answer is B. Good job :)

*February 1, 2012*

**trig**

58!! I'm workin on it too! LOL! See you in class!

*December 13, 2011*

**Proof read please**

You have to get involved!ï¿½ From the first day of school, freshman year of high school, those were the words that constantly fell from my momï¿½s mouth. I would not go a week without hearing those five words. At that time I did not ...

*October 15, 2011*

**Physics**

it is based off the equation: displacement = (initial velocity)*(change in time) + 1/2(acceleration)*(change in time squared) since that equation is linear, the equation recommended for this problem is: "angle" = 0 + 1/2(acceleration)*(change in time squared) that is...

*October 7, 2011*

**algebra**

Say, cost per day = D Say, cost per km = k 3D + 150k = 180 2D + 400k = 180 Multiply the first equation by 2 and the second by 3: 6D + 300k = 360 6D + 1200k = 540 Subtract the first equation from the second: 900k = 180 Divide both sides by 900: k = 0.2 2D + 400k = 180 2D + 400(...

*September 29, 2011*

**Algebra**

There are no like terms. It cannot be simplified.

*September 29, 2011*

**algebra**

Say Aarons age = 2A years Therefore, Half of Aarons age = A years Therefore, Tanya's age = A+10 2A + A+10 = 55 3A + 10 = 55 3A + 10 -10 = 55 - 10 3A = 45 A = 15. Therefore, Tanya is 15 + 10 = 25 years old. (Aaron is 2 x 15 = 30 years old)

*September 29, 2011*

**arithmetic**

ANSWER: 65 Substitute 30 into n: 7 + (30 - 1) x 2 7 + (29) x 2 7 + 58 = 65

*June 29, 2011*

**Maths C**

To solution is in the idea that Simpson's rule requires an even number of intervals and uses parabola capped trapezoids created by three points. Weddle's rule works accurately for more than 7 and odd numbers of intervals. Good luck in indentifying the derivation of the...

*June 23, 2011*

**english**

He had planned to take the last flight out to Chicago. However, the flight was cancelled due to bad weather.

*June 2, 2011*

**american history**

There are no statements listed :)

*June 2, 2011*

**life orientation**

Can you please post lines 10-15 or the passage you are implying to :)

*June 2, 2011*

**Title for essay**

I agree with Ms.Sue second title!

*May 19, 2011*

**math**

there are 3 ft in 1yd. 555ft/3ft=X yd/1yd 555ft=3xft divide =185 yards

*May 8, 2011*

**geometry**

Surface area of what? Cylinder, cone, sphere or ?

*April 23, 2011*

**Cultural Diversity**

YOU are not a nice person. Ms. Sue is very helpful and one of the nicest tutors here. I hope that the administrator of this site blocks you from ever posting here again.

*April 22, 2011*

**Social Studies**

See link. http://en.wikipedia.org/wiki/Albany_Plan

*April 21, 2011*

**geometry**

Your question, I assume, is to find the length and width of the rectangle? The diagonal creates 2 right triangles. L = length L - 4 = width By the Pythagorean theorem, d^2 = L^2 + (L - 4)^2 20^2 = L^2 + (L - 4)^2 Solve for L, the length width = L - 4

*March 15, 2011*

**algebra 1**

Try this link. http://www.algebra-class.com/dividing-monomials.html

*March 15, 2011*

**Logarithms**

Now, I feel stupid. I guess I should not work so late at night. I tried all these rules when all I needed to do was simplify log2√2 using the basic definition/relationship !! Thanks again. I don't remember learning logs some 40 years ago in HS and teaching myself. ...

*March 9, 2011*

**Logarithms**

Thanks so much Reiny.

*March 9, 2011*

**Logarithms**

I'm working on logarithmic equations and I'm stuck on how my book arrives at the next step. First, they use the change of base formula on, log(sqrt(2))(x^3 - 2) (sqrt(2)) is the base,changing to base 2 log(sqrt(2))(x^3 - 2)= log2(x^3 - 2)/(log2(sqrt(2)) I understand ...

*March 9, 2011*

**Math 126**

Arithmetic, the common difference is 11. 15 - 4 = 11 26 - 15 = 11 37 - 26 = 11 48 - 37 = 11 59 - 48 = 11

*March 7, 2011*

**algebra**

How can we answer without looking at the four choices of graphs? See the following in regards to graphing quadratic functions. http://www.purplemath.com/modules/grphquad2.htm

*March 4, 2011*

**word problem**

If this is your equation, M = −0.001t^3 + 0.1t^2 t = 14 min Substitute 14 for t and solve M = −0.001t^3 + 0.1t^2 M = −0.001(14)^3 + 0.1(14)^2 Now solve for M = number of words in 14 min

*March 4, 2011*

**Math**

This assumes that sides PQ and ST are corresponding sides. You do not state the relation of the sides in your problem. Create a proportion matching the corresponding sides and perimeters. PQ/ST = Perimeter PQR/Perimeter STU 18/6 = 78/x 18x = 468 x = 26 = Perimeter STU

*March 4, 2011*

**math**

Multiply the area of the rectangle by the square of the scale factor to get the area of reduced rectangle. Reduced area = 720 * (1/6)^2 Reduced area = 720 * (1/36) Reduced area = 720/6 Reduced area = ? sq in.

*March 4, 2011*

**math**

Master is incorrect f(x) = 7 ln x f' = 7/x f'(4) = 7/4

*March 3, 2011*

**coordinate geometry**

y - 18x + 18 = 4 Slope-intercept form of the equation is, y = mx + b m is the slope b is the y-intercept You need to put tour equation in the slope-intercept form by solving for y. Move everything to the right side of the equal sign. y - 18x + 18 = 4 y = 4 + 18x - 18 y = 18x...

*March 3, 2011*

**geometry**

Not sure I understand your question but I'll give it a try. AB = 4, 2 AB = 2 * 4 = 8 CD = 7 EF = 1 2AB - 1CD = EF 8 - 7 = 1

*March 3, 2011*

**Algebra 2 word problem**

Correct :)

*March 2, 2011*

**math**

You're welcome :), we all make mistakes.

*March 2, 2011*

**math**

Miss Sue, I think you missed the "0" before 45 (0.045 not 0.45) 0.045 = 45/1000 = 9/200 = 0.045 So, the fraction is, 45/1000 = 9/200 (reduced to lowest terms) 0.045 * 100 = 4.5% So, the percent is, 4.5%

*March 2, 2011*

**Measurment**

Are 22, 16, and 28 the sides of this triangle? What is "a nine in the middle" mean? What does this "9" represent? Your question cannot be answered as worded. What exactly does your problem say or state to do?

*March 1, 2011*

**denominators**

You need to use parenthesis. If this is your problem v/(v+5)+v/3 = -4/(v+5) Multiply both sides by 3(v+5) 3v + v(v + 5) = -12 3v + v^2 + 5v = 12 v^2 + 8v + 12 = 0 (v + 2)(v + 6) v = -6 or v = -2 Make sure you check the solutions in the original equation. I have NOT checked the...

*March 1, 2011*

**Math**

W = width W + 42 = length P = 2W + 2L 228 = 2(W) + 2(W + 42) Solve for W W + 42 = Length

*March 1, 2011*

**Math**

x = hrs farming y = hrs babysitting 10x + 5y >= 150 x + y <= 25 Solve the system

*March 1, 2011*

**algebra**

Parallel lines have equal slopes. Equations in the form y = mx + b m = slope, b = y-intercept Your equation, y = 1/2 x + 2.3 Do you know the slope now?

*March 1, 2011*

**math**

Circumference, C = 2 pi r or, C = pi d C = 2 pi r C = 2(3.24)(100) C = 628 feet for one lap 5280 * 2 miles = 10,560 feet 10560/628 = ? = laps in 2 mile

*March 1, 2011*

**Math**

tan -120 = (sqrt(3)) = 1.73205 coterminal with 240 deg in QIII so positive reference angle is 60 Where did you get - 0.71312301 Are you using a cal. set to the wrong setting, rads vs degrees?

*March 1, 2011*

**Geometry-Please check my answers**

Both your answers are correct.

*March 1, 2011*

**Algebra 2**

3x^2 + 1 + (-3x)/(x^2 - 3) Yes, your answer is correct, but I was taught that the remainder is expressed as, (-3x)/(x^2 - 3)

*March 1, 2011*

**Geometry-Please check**

http://www.jiskha.com/display.cgi?id=1299028007

*March 1, 2011*

**calculus**

Ignore my response. I completely misunderstood the question.(:

*March 1, 2011*

**calculus**

I think I read the question wrong. I thought the question wanted the slope of the tangent of f(x) at (1,-5) and the two equations at this point.

*March 1, 2011*

**calculus**

y = x^2 - 2 f' = 2x P(1,-5) f' = slope m = 2(1) = 2 Equation of the line tangent at P(1,-5) m = 2 y = mx + b -5 = 2(1) + b -5 = 2 + b b = -7 Equation of the tangent line is, y = 2x - 7 2x - y = 7 Equation of the normal line at P(1,-5) (The normal line is the line that ...

*March 1, 2011*

**accounting**

Post your question, but I've noticed that there are not many experts here for accounting questions (depending on the specific question). Depending, I might be able to help, depending on how involved and the specific area involved. Someone might be able to point you in the ...

*March 1, 2011*

**Algebra 2**

You have to do polynomial long division. I can't layout the problem here because of the alignment of columns and such. See this website. It explains in detail how to do this. I'll check your answer if you post it. Good luck :) http://www.purplemath.com/modules/polydiv2...

*March 1, 2011*

**geometry**

See this post. Only the side length is different. Same method is used. http://www.jiskha.com/display.cgi?id=1298927532

*March 1, 2011*

**Algebra 2**

You need parenthesis. I'll assume your problem is, x/(x+1) + 5/x = 1/(x^2 + x) x/(x+1) + 5/x = 1/(x(x + 1)) Multiply both sides by x(x + 1) x^2 + 5(x + 1) = 1 x^2 + 5x + 5 = 1 x^2 + 5x + 4 = 0 (x + 1)(x + 4) = 0 x = -1 or x = -4 Make sure you check both answers in the ...

*February 28, 2011*

**calculus**

| = integration symbol | u dv = uv - | v du | arctan(4t) dt u = arctan(4t) du = 4/(16t^2 + 1) dt dv = dt v = t It should look like this, = t arctan(4t) - | 4t/(16t^2 + 1) dt After you set that up, substitute w = 16t^2 + 1 dw = 32t dt 1/32 dw = t dt Then, the integration should...

*February 28, 2011*

**math algebra1**

x = Janet's distance to office 2x - 1 = Lynn's distance to office x + 2x - 1 = 8 3x = 9 x = 3 x = 3 mi from Janet's house to office 2x - 1 = 5 miles Lynn's house to office

*February 28, 2011*

**Algebra 1**

You're welcome :)

*February 28, 2011*

**Algebra 1**

y = height = -16t^2 + 63t + 4 The vertex of this parabola is called the maximum point. Vertex = -b/2a Vertex = -63/(2(-16)) Vertex = t value = 1.96875 So, the maximum value for t seconds is 1.96875 y = height = -16t^2 + 63t + 4 t = 1.96875 y = -16(1.96875)^2 + 63(1.96875) + 4 ...

*February 28, 2011*

**math**

Assuming he spent all his money, x = Money he started with 1/3 x = spent on hat 1/6 x = spent on socks 12 = spent on a tie Total spent = 1/3 x + 1/6 x + 12 Total spent = 2/6 x + 1/6 x + 12 Total spent = 3/6 x + 12 Money he started with - Total spent = 0 x - (3/6 x + 12) = 0 6/...

*February 28, 2011*

**Math 10+**

Or, do you mean 2^(-3) = 1/(2)^3 = 1/8

*February 28, 2011*

**Math 10+**

1/8 = 0.125 x^(0.125)

*February 28, 2011*

**math**

The diagonal of a square forms two 45-45-90 triangles. The sides of a 45-45-90 triangle are in the ratio, a : b : hypotenuse x : x : x(sqrt(2)) The diagonal is the hypotenuse of this 45-45-90 triangle. Side = 7 7 * (sqrt(2)) = ?

*February 28, 2011*