Saturday

April 19, 2014

April 19, 2014

Total # Posts: 3,849

**algebra**

suppose a ball is thrown upward from a height of 4.5 feet with an initial velocity of 21 feet per second. write an equation relating the time t and height h of the ball

**English**

the answer is b

**English**

the answer is b

**English**

no b

**Steve**

How do I find the vertex?

**Damon**

Sorry you were right my unit was wrong, thanks!

**steve**

As my final answer do I use ft or m ?

**Damon **

yes

**Damon**

Okay this time my answer came to be 39.4 m but it still says incorrect. Did I not do my calculations correctly?

**Damon**

When I did that My answer came to be .501 but it was marked wrong. Was that the answer I was supposed to get?

**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 horizont...

**Damon **

I know but which values do I plug in?

**Damon**

For part E which x and y do I plug in?

**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)?

**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?

**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?

**math**

16 times 4 which equals 64 so the length of the rope was 64 inches

**math**

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

**math**

I do not understand what the question is.

**maths**

No it is actually 2 hundredths or 2/100. Hope this helps!

**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?

**math**

24 of each or 4 chicken paddies packs and 3 bun packs

**Math**

The answer is $510

**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 electi...

**Math**

What is the value of the following expression? - 3| -3 + 6| - 3

**math**

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

**Physics**

how much energy is required to change 40 g of ice at -10 C to steam at 110 C?

**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.

**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.

**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?

**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.

**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?

**math**

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

**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

**8th Grade Connections Academy**

What connection academy at ripon?

**Science Please HELP!!!**

Ms.Sue?

**Science Please HELP!!!**

1 teeth, aorta, ureter 2 cartilage, epidermis, larynx 3 nephron, villi, alveoli 4 leukocytes, atrium, bronchi answer #2

**Science Please HELP!!!**

Please anyone!!!

**Science Please HELP!!!**

Which of the following are structures that rely on capillaries for exchange or movement of small molecules?

**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 t...

**math**

thank you starting to get it little by little

**math **

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

**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

**math**

Thank you. I thought so too

**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

**math**

Is it 7.98 x2 x4.2 /1/2 =16.75?

**math**

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

**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 o...

**math**

Tom has 58 cards

**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?

**Geography**

They sailed...(double post ;))

**Social Studies (History)**

Just google search it, @Nicole, it's not that hard honestly...

**math**

Yeah what Steve said

**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 lea...

**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

**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 th...

**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.

**College Algebra**

C * x = C x = C/C C/C = 1 x = 1

**College Algebra**

slope = y2 - y1 / (x2-x1) = 7/5 perpendicular = -1/m so we have -5/7

**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...

**math**

adult ticket = 3 * child ticket adult + child = 36 substitute in: 3 child ticket + child ticket = 36 4 child ticket = 36 child ticket = 9

**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 -...

**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?

**math**

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

**math**

sorry i just dont get it.

**math**

Started with 125.87 -40 =85.87

**math**

IS IT 85.87 +40.00 =125.87 -22.25 =103.62 +22.25. so is it103.62?

**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?

**math**

72 is what percent of 480? Write an equation.

**math**

15/23.25= x/100 then you cross multiply?

**math**

Estimate a 15% tip on a taxi ride that cost 23.25.

**math**

thank you!

**math**

36*108=3888 divided by 100=38.88?

**math**

108 is 36% of what number? Write and solve a proportion.

**math**

It is B.

**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

**math**

What number is 73% of 215? A.215=0.73n B.n=0.73*215 C.0.73=n*215 D.215=73n

**Algebra2**

srry :(

**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 t...

**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?

**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...

**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

**Trigonometry**

ww w . wolframalpha . c om

**Calculus**

:)

**Chemistry**

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

**English**

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

**science**

P = W(joules)/t(time in sec) 120J / 5 seconds = ?

**Language Arts**

? @ zamaya @ sandy, we were given no info, no story...

**Astronomy**

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

**Algebra 1b!**

what do yo think for each problem?

**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 =?

**Math**

Erm...no....it can't.

**math**

0.205 * 7700 = ?

**Math-Precalculus-Parametric Equations - Ellipses**

Thank you very much both of you sirs it is much appreciated!

**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...

**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

**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"

**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

**MATH**

Y=2X+4 Y=2(3)+4 Y=6+4 Y=10

**MATH**

CORRRECTION!!!! -4/5!

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