Saturday
April 19, 2014

Posts by Marco


Total # Posts: 227

proabilities
LOL..not very realistic example by the textbook. Would you mind helping understand how you came up with that? which one of the probability formulas was used..I understand the answer just not sure how you came about it. Thanks

proabilities
Suppose the NBA has decided to add two more teams to the league. If 18 cities have applied for franchises, what is the probability that in a random drawing, the league selects the two westernmost cities? Having trouble with this one.

Math
Thank you!

Math
Confused on permutation or combination on this question: A VISA credit card has a first digit of 4 followed by 15 other digits. How many different VISA accounts does this allow? I know the formulas but I am having a hard time determining which one to use. Help!!!

Trigonometric Ratios
Right traingle ABC is graphed pm the coordinate plane and has vertices at A(-1,3), B(0,5), and C(4,3). What is the measure of angle C to the nearest degree? F:27 G:29 H:32 J:43

Geometry
The hypotenuse if a right triangle measures 9 inches and one of the acute angles measures 36 degress. What is the area if the triangle? Round to the nearest square inch.

Geometry
A right triangle has an angle that measures 55 degress. The leg adjacent to this angle has a length of 43 cm. What is the length of the triangle? Round to the nearest tenth

Math
thank you!

Math
-6≤x/2-4<-3

Math
just as it is written: -6 is <or= x/2-4 < -3

Math
le is less than or equal and lt is less than..was not sure how to less than equal on the computer

Math
I'm stuck on solving this one. If I could get some help please. -6 le x/2 - 4 lt -3

math
Stuck on solving this inequality, help please. 3X le 15 and 2x gt -6

3 states of matter
hi can you please help me by giving some facts on the 3 states of matter solid liquid gas

physics problem
how did u calculate "time to fall". and what is H and g in the equation: sqrt(2 H/g) = 2.86 s?

physics problem
A cannon is fired horizontally from atop a 40.0 m tower. The cannonball travels 175 m horizontally before it strikes the ground. With what velocity did the ball leave the muzzle?

PHYSICS
is g 9.8 or -9.8?

PHYSICS
A cannon is fired horizontally from atop a 40.0 m tower. The cannonball travels 175 m horizontally before it strikes the ground. With what velocity did the ball leave the muzzle?

physics
i dont understand your work. please try to explain it more thoroughly.

science
hey, check out wiki by yourself. I found a lot of examples

math
B--------------C--------A |------6-------|----4----| A = 8

math
B--------L--------A |---3----|----3----| 7-4= 3 4-3 = 1 so, B = 1

math
B can be -7 or 3

math
???What is the question?

math
do you mean (√2y)(√3)(√8y) =[(2y)^0.5][(3)^0.5][(8y)^0.5] ??????? If so,it is (√48)y=(4√3)y

algebra
....this question have trivial solution m=-3/4 n=-67/8

algebra
hey , they are same on both sides. CAN'T solve!

Probability
total no. of the combination of two dice = 21 3/21=1/7

College physics-oscillations
hey, anyone help???? This is the most difficult question in my assignment and i need to hand in on monday!!!!!!!!!

College physics-oscillations
A ball is attached by two spring as shown [vvvOvvv]. If the mass is displaced a distance â–³x BELOW the equilibrium position h (see figure A). Determine whether vertical SHM is possible for the system shown.If so, find the natural frequency. [Assume that the ve...

Physics
oh, i know why i am wrong.it is because i take friction a wrong direction. thanks very much!(Damon is correct!)

Physics
(force exerted by father)+(friction)-weight along the slope = 0 F+(0.2)(35x9.81xcos11)-(35x9.81xsin11)= 0 F= -1.89N (hey, why it is negative? It is wrong. I need more information) work done = F.S

Physics
lol, both method can find the answer

Physics
At equilibrium position, K.E.=max,P.E. = 0 At the two extreme points, K.E.=0,P.E.=max Total energy is constant at ANY POINT. We find E at extreme point. E = 1/2*k*(0.8)^2 = 0.24J

physics
lol, you are welcome

physics
K.E. = P.E. 1/2mv^2 = mgh v^2 = 2gh v = (2gh)^(1/2) v = (2x9.81x155)^(1/2) v = 55.146m/s

AP Physics
I am a Hong Kong student. But i think i may help you. The only force on the ladder from the wall is the horizontal force.The system here is in static equilibrium. Net torque is zero.Let the total length of the ladder be 1m. then, (1)[(29+9.9+7.1)(g)(0.68)]sin⊙...

College physics-oscillations
A ball is attached by two spring as shown [vvvOvvv]. If the mass is displaced a distance â–³x BELOW the equilibrium position h (see figure A). Determine whether vertical SHM is possible for the system shown.If so, find the natural frequency. [Assume that the ve...

Physics
I am a student.But i think i may help you.....the formula for the period of a simple pendulum is T = 2pi(L/g)^0.5.........as you can see..the mass do not affect the period.

physical science
what does Q=m times t times c. mean and wat are the meaning of each letter

math
thanks!

math
having a little trouble following the steps to complete this problem. Rewrite each expression with a positive ration exponent. Simplify if possible: 16^-3/4

physical
This is related to physics since it is talking about relativity. The answer is c. Imagine looking out your car window at a bus stop. If you are moving right, the bus stop seems to be moving towards your left. It moves to the left at the same speed as you move to the right. Eve...

english-poetry
thank you

english-poetry
I need some help in finding some good one stanza (4 lines) poems. Tried googling but my googling skills are not very good. Maybe one of you have a good list? Thanks

physiology
Need help with this one, can't really locate the answer. Consider the bifurcation of a vessel at 20 degrees from the line of blood flow (region a) and a vessel that gives off two vessels at 90 degrees from the main stream of the vessel (region b). Which region is more susc...

biology
What happens to the cells of the body when large quantities of sodium ion were introduced to the blood stream?

Science
What happens to the cells of the body when large quantities of sodium ion were introduced to the blood stream? Having trouble with this question, any help please! ;-)

math
thanks

math
a) 6(2x-3)-5(3x-2) i have -3x-8 b) 8-2[3-5(3x-1)] not sure Thanks

math
Not sure of this one. Factor completley 1-81z^2 and this on 16p^2q^2-8pq^2+q^2

Math-Factoring
Factor completely. 10x^2yz^2 + 15xy^3z I came up with 5xyz(2xz+3y^2) Correct?

Chemistry
Which of the following substances has the greatest solubility in water? A. Ca(OH)2, Ksp = 6.5 × 10-6 B. Ag2SO4, Ksp = 1.5 × 10-5 C. PbI2, Ksp = 7.9 × 10-9 D. Zn(IO3)2, Ksp = 3.9 × 10-6 E. BaF2, Ksp = 1.5 × 10-6

Math-Factoring 2
AAAAAAAAAAAAAAAHHHHHHH...thanks..it's in the details.

Math-Factoring 2
The last one shold be (x ) (x )

Math-Factoring 2
Factor Completely 2x^3-40x^2-192x I have a common factor of x so I rewrote the problem as x(x^2-40x+192) then trying to use FOIL rewrote as (x ) (x ) And that is where i'm stuck.

Math - Factoring
Thank you. I am not feeling 100 percent confident in this topic, so you might see a few more, i do appreciate the help!

Math - Factoring
Factor Completely 6^8+12x^6-24x^4+30x^2 I got 6x^2(x^6+2x^4-4^2+5) Correct?

math
Thanks!

math
I am not totally understanding this process. Factor Completely: x^5y^2 - x^4y^2 - 2x^3y^2

Algrera
Write the equation of the line passing through the given two points? a) (3,7) and (4,7) Answer: m=7-7/4-3 b) (2,7) and (2,9) Answer: m=9-7/2-2 c) (5,-3) and (1,7) Answer: m=7-(-3)/1-5 Correct?

Algrebra
I see it thanks...

Algrebra
Write the equation of the line passing through the given point with the given slope. a) point (3,-2) with slope of m=5/3 Answer: y-(-2)=5/3x-3 b) point (3,9) with slope m=(-2/7) Answer: y-9=-2/7x-3 Correct?

Algebra
Great! Thanks

Algebra
1. Write the equation of the line with the given slope and y-intercept a) m=3/8 and b=6 Answer: y=3/8x +6 b) m=-2 and b=11 Answer: y=-2x+11 c) m=0 and b=6 Answer: y=x+6 Correct?

Algebra
thanks!

Algebra
Thank you bun, but how did you come up with that anser for B

Algebra
3. Find the slope of each line with equation as given. a) Y=4 b) X=2 Answers: a) zero b) undefined 4. Graph the following equations: a) 3x-2y=6 answer: (2,0) and (0,-3) b) 5x+3y=6 (need help with this one) Are they correct and would need help with b.

Algebra
Thanks you will, just looking for validation and help on the ones i don't unsderstand. Thanks again.

Algebra
1. Compute the slope of the line containing each pair of points. a) (3,7) and (4,7) b) (2,7) and (2,9) c) (5,-3) and (1,7) Here is what I got. a) 0 b) undefined c) -10/4 reduced to -5/2 Correct?

math
Thanks. I was translating the problem incorrectly. I got the right answer using the formula A=P*B A=15*102 A=15.30 15.30 + 102.00 = 117.30 Thanks.

math
Thanks. I was translating the problem incorrectly. I got the right answer using the formula A=P*B A=15*102 A=15.30 15.30 + 102.00 = 117.30 Thanks.

math
Never mind it's not right..just having a brain fart :-)

math
errrgg..i meant i figured out #2 i need help with #1. My formula is as instructed. B=a/p (Base=amount/percent) My answer is: B=102.00/0.15 B=6.80 so the regular prices is 102.00+6.80=108.80 Is that correcT?

math
I figured out #1 just need help with #1

math
I have two questions. I am trying to use the formulas our teacher used but I am still confused. I will discuss it with him tonight but I just wanted to get a different perspective. #1 Amy paid $102 for a pair New Balance 1122 running shoes during a 15%-off sale. What was the r...

math-percent
Thanks.

math-percent
Is anyone familiar with this formula for figuring out percent? How it would work? p/100 = of/is

Algebra
Help with this one: 2/3+4t=6t-2/15

Algebra help
thanks this helps quite a bit.

Algebra help
m having an extremely tough time with integers in algebra when simplifying algebraic expressions. No matter which method I use I still end up confused and end up with a completely different answer. Ex: 5t-{7t-[4r-3(t-7)]+6r}-4r

algebra
I am having an extremely tough time with integers in algebra when simplifying algebraic expressions. No matter which method I use I still end up confused and end up with a completely different answer. Ex: 5t-{7t-[4r-3(t-7)]+6r}-4r

Chemistry
C! zero degrees

English
Bump..any comments?

Egnlish
Writing an argument essay. If anyone can read and comment that would be great!. Helicopter Parents: Harmful To Our Youth Picture the following: A young woman twenty-two years of age walks into her apartment, she turns on the light switch and the light in the main lamp does not...

Physical Science
How many calories of heat are required to raise the temperature of 550g of water from 12.0 degrees celcius to 18.0 degrees celcuis

English
Yes that is where it's at, I will take your suggestion and move it down. Thank you Writeteacher.

English
Sorry, one more thing, can you identify the thesis fairly easy?

English
LOL.. Thanks. I did separate it in the paper but it did not separate when I cut and paste.

English
I have been asked to write a synthesis essay. I have never written this type of essay before. This is my first rough draft, I am just looking to see if I have the right approach etc. Thanks! Passion vs. Logic: Immigration Reform One of the most polarizing issues in our country...

English Essay
Thanks GuruBlue for the feedback. I will look for those clauses. Although it's not my forte.

English Essay
Doing a summary response essay, looking for comments, suggestions, corrections thanks!!!!!! I see them. We all see them. They are powerful, hypnotic and persuasive. Images. We cannot pry our eyes from them. We can shut the books and magazines if we do not like the writings. We...

English
Thank bobpursley and writeteacher. Great feedback.

English
Need some feedback if this works as a summary. Thank you. In “Power of Images: Creating the Myths of Our Time,” J. Francis Davis believes communication by images with its voluminous exposure and alluring advertisements, has overpowered what can be considered traditio...

College English
Thank you. I appreciate the feedback.

College English
I have been asked to present a gist statement and I am just looking to find out if I understood the concept. Below is what I've been asked to analyze: We see them everywhere: on billboards, in magazines, on bus placards. They come in the mail and in our Sunday newspapers: ...

College English
Thank you!

College English
Does anyone have any good, simply explained sources on how to use the MLA format?

9th grade biology
"saturated"

English
Thank you Ms. Sue. I was really thinking that was it but I wasn't 100% sure as it did not have quite the punch I'm used to seeing for thesis. Thank you again.

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