# Posts by Helper

Total # Posts: 1,825

Science
its d.

Language
It's Falling Action

math
The answer is 1/48, I just finished this question on my test and got it right :)

History
number 2 is B. :)

English! - Help!
i just got 13/15! 8 and 9 should've been c.

Math
1. histogram with intervals of 5 2. histogram with intervals of 3 3. line plot 4. line graph these are the multiple choice answers

Math
Which display is best to determine the relationship between the number of hours worked and the amount of money paid?

Science
No you tard.. The answer is c. it uses a renewable energy source. just look up biomass duuhhh

number 12 is c.

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

Hiram Elementary School
I don't believe this is a complete question

Spanish 2 Help
lee no leas

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)

yes Riley is right

physics
13.1 kg * m/s

statistic
3.80127(1.03605)^x

Thanks Mr.? ! 100%

Science help (just 4 questions)
Avery is 100% correct. :)

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

S.S. help plz
For the quiz in unit 4 the correct answers are b a d b a d c c a a 100%

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!

Writing skills 1
5. C. Of course this is the right answer!!

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 ...

Soc. Studies
ITS C

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

10 is wrong... it is C

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 ...

Quantum Physics
1/sqrt(2) -1/sqrt(2) 1/sqrt(2) 1/sqrt(2)

Physics
0.5, 0, 0, 0.5, 0, 0.5, 0.5, 0

physics
0.5, 0, 0, 0.5, 0, 0.5, 0.5, 0

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

Physics
I X

Physics
7/9

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

Languege arts
A B B C B A C A FALSE

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

chemistryy
5.043661*10^15

chemistry
4.7E-15

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

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

Somebody is right renina is wrong I got a 50%

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 !!

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 ...

math
704-12,132= -11,428

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?

S.S
Thanks Shawn Mendes is bae! lol

English
Lacey was right!(:

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.

physics
the output will decrease

math
I dunno, but maybe u can help me!

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

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

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 ...

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...

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(...

Algebra
There are no like terms. It cannot be simplified.

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)

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

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...

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

american history
There are no statements listed :)

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

Title for essay
I agree with Ms.Sue second title!

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

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

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.

Social Studies

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

algebra 1

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. ...

Logarithms
Thanks so much Reiny.

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 ...

Math 126
Arithmetic, the common difference is 11. 15 - 4 = 11 26 - 15 = 11 37 - 26 = 11 48 - 37 = 11 59 - 48 = 11

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

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

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

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.

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

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...

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

Algebra 2 word problem
Correct :)

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

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%

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?

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...

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

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

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?

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

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?

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)

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

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

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.

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 ...

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 ...

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