Wednesday
August 20, 2014

Posts by Sam


Total # Posts: 3,923

physics
A lighthouse that rises h1 = 47.0 ft above the surface of the water sits on a rocky cliff that extends d = 17.4 ft from its base, as shown in the figure below. A sailor on the deck of a ship sights the top of the lighthouse at an angle of theta = 29.3 degree above the ...
January 25, 2014

Damon
I know but which values do I plug in?
January 25, 2014

Damon
For part E which x and y do I plug in?
January 25, 2014

physics
Data: theta_1 = 44.9 theta_2 = 146.1 A = 4.8 cm B = 8.7 cm A)What is the x component of vector A? B)What is the y component of vector A? C)What is the x component of vector B? D)What is the y component of vector B? E)What is the magnitude of vector (A + B)?
January 25, 2014

Damon
yes in terms of vf. we are asked to combine different kinematic equations to drive xf. I believe the equation v=vo+at^2 can sub for vo. does this make sense?
January 25, 2014

Physics
A hot-air balloon is rising upward with a constant speed of 2.20 m/s. When the balloon is 2.50 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground?
January 24, 2014

math
16 times 4 which equals 64 so the length of the rope was 64 inches
January 23, 2014

math
1/3 is the probability that Tom will score 24 or more times in tonight's game.
January 23, 2014

math
I do not understand what the question is.
January 23, 2014

maths
No it is actually 2 hundredths or 2/100. Hope this helps!
January 23, 2014

physics
A model rocket is launched straight upward with an initial speed of 47.7 m/s. It accelerates with a constant upward acceleration of 2.02 m/s2 until its engines stop at an altitude of 157 m. What is the maximum height reached by the rocket?
January 23, 2014

math
24 of each or 4 chicken paddies packs and 3 bun packs
January 23, 2014

Math
The answer is $510
January 23, 2014

Social Studies
I'm not so sure about the answers to these questions. Could you check my answers please? Thanks. Who led the federal troops that forced the Cherokee west on the trail of tears? -Andrew Jackson -Winfield Scott -William Henry Harrison** -Oliver Hazard Perry To win the ...
January 19, 2014

Math
What is the value of the following expression? - 3| -3 + 6| - 3
January 15, 2014

math
Eduardo thinks of a number between 1 and 20 that has exactly 5 factors . what number is he thinking of ? explain
January 13, 2014

Physics
how much energy is required to change 40 g of ice at -10 C to steam at 110 C?
January 12, 2014

Physics
a ball is given a velocity of 3.89 m/s at an angle of 32 degrees. Calculate the maximum height and the range of the ball after 5.0s.
January 12, 2014

Physics
A car traveling with an initial velocity of 68 km/h accelerates uniformly at a rate of 1.35 m/s^2 for 4.7s. Find the final speed and displacement of the car during the specified time interval.
January 12, 2014

Physics
A bus slows down uniformly from 75 km/h to 15 km/h in 12.55 s. How far did the car travel before stopping?
January 12, 2014

Physics
Henry walks 20 km west forgot his coat, so he turns and heads 13 km east. He decided to go another path to make up for the lost time and travels 30 km south and then moves west for 27 km. Calculate Henry's displacement.
January 12, 2014

physics
A child and a sled have a combined mass of 87.5 kg slides down a friction-less hill that is 7.34 m high. If the sled starts from rest, what is the velocity of the sled at the bottom of the hill?
January 12, 2014

math
Use synthetic division to find the quotient and remainder. (r^2-2r+2), (r-1)
January 11, 2014

Science Please HELP!!!
Which of the following are structures that rely on capillaries for exchange or movement of small molecules? 1 teeth, aorta, ureter 2 cartilage, epidermis, larynx 3 nephron, villi, alveoli 4 leukocytes, atrium, bronchi answer #2
January 8, 2014

8th Grade Connections Academy
What connection academy at ripon?
January 8, 2014

Science Please HELP!!!
Ms.Sue?
January 8, 2014

Science Please HELP!!!
1 teeth, aorta, ureter 2 cartilage, epidermis, larynx 3 nephron, villi, alveoli 4 leukocytes, atrium, bronchi answer #2
January 8, 2014

Science Please HELP!!!
Please anyone!!!
January 8, 2014

Science Please HELP!!!
Which of the following are structures that rely on capillaries for exchange or movement of small molecules?
January 8, 2014

Physics
A car of mass 900.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 49.7 km/hr (13.8 m/s), the net power which the engine supplies is 4300.0 W (in addition to the extra power required to make up for air resistance and friction). Calculate ...
January 2, 2014

math
thank you starting to get it little by little
December 18, 2013

math
how would you do the following 12 divided by 2 7/8, 1 1/6 x 3 3/8 ,
December 18, 2013

math
How do you do the following 1 5/8 +2 7/24 and 1 3/8 divided by 2/4. NOT SURE OF THE FORMULA
December 17, 2013

math
Thank you. I thought so too
December 16, 2013

math
At the Pentagon there are921 feet along each outer side facade and 17.5 miles of corridorS inside it. All sides of the Pentagon are equal. What is the perimeter of the Pentagon
December 16, 2013

math
Is it 7.98 x2 x4.2 /1/2 =16.75?
December 15, 2013

math
The area of a triangle is 3.99cm2 . If the base is 4.2 cm, how do you find the height ?
December 15, 2013

science very urgent help?
Susan has heard that taking an over-the-counter ‘energy’ pill, which contains as much caffeine as a strong cup of coffee, makes people feel alert and ‘speedy’. She wonders if taking this pill will make a difference to the reaction times of people doing an ...
December 13, 2013

math
Tom has 58 cards
December 12, 2013

math
Tom and Max have 72 football cards.Tom has 2 more than 4 times as many cards as Max has. How many football cards does Tom have?
December 12, 2013

Geography
They sailed...(double post ;))
December 11, 2013

Social Studies (History)
Just google search it, @Nicole, it's not that hard honestly...
December 11, 2013

math
Yeah what Steve said
December 11, 2013

math
For the first one: if you have to, just list em all out Mugs: 6,12,18,24,30,36,42,48,54,60.... Shirts: 14,28,42,56,70.... See any numbers in common so far? Yep: the 42. So the 42nd guest will get both Second one: Can't figure it out, cuz not enough information, did you ...
December 11, 2013

Math - Precalculus - Parametric Equations/Geometry
Thanks, but I was wondering how you got the horizontal and vertical speeds, sorry I'm not that good at parametric equations yet :( Also how did you get that the angular velocity is 3*2pi / s? Thanks
December 11, 2013

Math - Precalculus - Parametric Equations/Geometry
A hockey puck of diameter 3 inches is spinning around its center at a speed of 3 counterclockwise rotations per second. The center of the puck is traveling at a speed of 24 inches per second at an angle of 45 degrees to the positive real axis. (a) At time t=0, the center of ...
December 11, 2013

math
If you buy one ticket you have a 1/2500 chance of winning. Thus, you're expected value is 5000/25$ = 2$ return for your 5$ ticket. So you get -$3.
December 11, 2013

College Algebra
C * x = C x = C/C C/C = 1 x = 1
December 11, 2013

College Algebra
slope = y2 - y1 / (x2-x1) = 7/5 perpendicular = -1/m so we have -5/7
December 11, 2013

College Algebra
Erm....? *I found them!* They're in the 3rd row before the = signs. Seriously though, I don't get what you're asking...
December 11, 2013

math
adult ticket = 3 * child ticket adult + child = 36 substitute in: 3 child ticket + child ticket = 36 4 child ticket = 36 child ticket = 9
December 11, 2013

algebra
ax^2 + bx + c = 1 plug in first value 4a -2b + c = 1 do the same for the others: 0 + 0 + c = 5 c = 5 16a + 4b + c = -59 so we plug in c into the equations with and b: 16a + 4b + 5 = -59 4a -2b + 5 = 1 4a = 2b -4 2a = b - 2 16a + 4b = -64 8(b-2) + 4b = -64 2(b-2) + b = -16 2b...
December 11, 2013

Math, HELP!
A concert venue sold 1425 tickets one evening. Tickets cost $40.00 for a covered pavilion seat and $30.00 for a lawn seat. Total receipts were $48,000.00. How many of each type of ticket were sold?
December 10, 2013

math
Thank you. I was going crazy trying to figure it out.Thank you for all your help in math
December 10, 2013

math
sorry i just dont get it.
December 10, 2013

math
Started with 125.87 -40 =85.87
December 10, 2013

math
IS IT 85.87 +40.00 =125.87 -22.25 =103.62 +22.25. so is it103.62?
December 10, 2013

math
This morning Tom deposited 22.25 in his bank account. At lunchtime he withdrew 40.00 and he found out that he had a balance of 85.87. What was his balance at the start of the day?
December 10, 2013

math
72 is what percent of 480? Write an equation.
December 10, 2013

math
15/23.25= x/100 then you cross multiply?
December 10, 2013

math
Estimate a 15% tip on a taxi ride that cost 23.25.
December 10, 2013

math
thank you!
December 10, 2013

math
36*108=3888 divided by 100=38.88?
December 10, 2013

math
108 is 36% of what number? Write and solve a proportion.
December 10, 2013

math
It is B.
December 10, 2013

math
What percent of 94 is 23? A.n/94=23/100 B.23/94=n/100 C.94/n=23/100 D.23/94=100/n
December 10, 2013

math
What number is 73% of 215? A.215=0.73n B.n=0.73*215 C.0.73=n*215 D.215=73n
December 10, 2013

Algebra2
srry :(
December 10, 2013

Algebra2
minus the first from the 3rd equation we get 3x-3x + 2y-2y + 3z -z = 7-1 2z = 6 z = 3 plug into the 2nd equation to get 5x+5y = 3-12 = -9 plug into the first equation to get 3x+2y = 4 Multiply the 2nd equation by 2 and the 1st by 5 10x+10y = -18 15x+10y = 20 minus first from ...
December 10, 2013

Parametric equations/Trigonometry - Lattice points
Thanks, but why is it a triangle and not a line I graphed it and it is a line do I have to connect the ends and stuff?
December 10, 2013

Parametric equations/Trigonometry - Lattice points
A lattice point is a point with integer coordinates. How many lattice points (x,y) with -100 less than or equal to x less than or equal to 100 and -100 less than or equal to y less than or equal to 100 are on the graph of the parametric equations x=30-40 cos t y=-50 + 30 cos t...
December 10, 2013

Geometry
volume = w * h * l surface area = 2wh + 2lh + 2wl So find something with dimensions that multiply up to the same number but the surface area is different, for example if w = 1 h = 2 l = 8 compared with w= 1 h = 4 l = 4 It would give different surface areas 4 + 32 + 16 8 + 8 + 32
December 10, 2013

Trigonometry
ww w . wolframalpha . c om
December 10, 2013

Calculus
:)
December 9, 2013

Chemistry
I have a similar question and I got 1.7x10^-8 but would we have to multiply this value by 2?
December 9, 2013

English
I suppose so, if she meant a journal entry, you should probably write it as a journal entry.
December 9, 2013

science
P = W(joules)/t(time in sec) 120J / 5 seconds = ?
December 9, 2013

Language Arts
? @ zamaya @ sandy, we were given no info, no story...
December 9, 2013

Astronomy
Erm...I don't think we're going to solve all these problems for you you need to at least make some effort
December 9, 2013

Algebra 1b!
what do yo think for each problem?
December 9, 2013

Geometry
2.5 * 4.6 * x = 172.5 x = 15 surface area = 2 * wh + 2*wl + 2*hl 2.5 * 4.6 * 2 + 2*2.5 * 15 + 2*4.6*15 =?
December 9, 2013

Math
Erm...no....it can't.
December 9, 2013

math
0.205 * 7700 = ?
December 9, 2013

Math-Precalculus-Parametric Equations - Ellipses
Thank you very much both of you sirs it is much appreciated!
December 9, 2013

Math-Precalculus-Parametric Equations - Ellipses
The graph of the equation (x-h)^2/(a^2) + (y-k)^2/b^2 = 1 is an ellipse with center (h,k), horizontal axis length 2a, and vertical axis length 2b. Find parametric equations whose graph is an ellipse with center (h,k), horizontal axis length 2a, and vertical axis length 2b, and...
December 9, 2013

science
And I'd say B not A cuz brown bats are like keystone species and they are vital to the environment, some other bats might not be in the area etc. Or they might be the most plentiful
December 9, 2013

science
B I'd say, cuz there's probably lotsa other different types of that type of animal, (for example different types of bat, not just brown bats) so those animals would "fill in the gap"
December 9, 2013

MATH
2X-3Y=5 -2X -2X -3Y=5-2X DIVIDE BOTH SIDES BY -3 Y=-5/3+2/3X NOW DO THE SAME FOR THE OTHER ONE PLUG THE -2 IN FOR X Y=-5/3+2/3(-2) PUT IN CALC WATCH SIGNS!! Y=-3
December 9, 2013

MATH
Y=2X+4 Y=2(3)+4 Y=6+4 Y=10
December 9, 2013

MATH
CORRRECTION!!!! -4/5!
December 9, 2013

MATH
5X-Y=3 -5X -5X -Y=3-5X DIVIDE BY -1 ON BOTH SIDES Y=-3+5X PLUG IT IN PLUG IT IN 7=3-5(X) SOLVE SUBTRACT BY 3 ON BOTH SIDES 4=5X AND DIVIDE BY -5 ON BOTH SIDES 4/5=5/5X 4/5=X
December 9, 2013

Trigonometry/Geometry - Inequalities
Actually I solved it, but thanks :P
December 7, 2013

Trigonometry/Geometry - Inequalities
Let a, b, and c be positive real numbers. Prove that sqrt(a^2 - ab + b^2) + sqrt(a^2 - ac + c^2) is greater or equal to sqrt(b^2 + bc + c^2). Under what conditions does equality occur? That is, for what values of a, b, and c are the two sides equal? This looks like a geometry...
December 7, 2013

algebra
lol caps much?
December 6, 2013

Trigonometry - Geometry - side lengths
ohhhhh that makes sense i should have thought of that thanks!
December 6, 2013

Trigonometry - Geometry - side lengths
In convex quadrilateral ABCD, angle A is congruent to angle C, AB=CD=180, and AD is not equal to BC. The perimeter of ABCD is 640. Find cos A. Hmm...I drew the diagram, and labeled some things, I drew an altitude from D to AB and did some other things, but no success was ...
December 6, 2013

science
Which of the following...?
December 6, 2013

language
? or....? Anyways, the grammar is correct, I suppose.
December 6, 2013

Algebra 2
multiply all sides by 2x^2 1 + 4x^3 + 6x^2 = 0 let y = x^2 1 + 4y^2 + 6y=0 4y^2 + 6y + 1 = 0 Apply the quadratic formula then sqrt the answer to get the answer
December 6, 2013

Classical Mechanics Physics
:/ What did you do so far? Also, we're not really going to solve all your problems for you you have to at least make an effort
December 6, 2013

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