All Answers 358509 Answers

28m/s 

Half of (9.3*8.1) 

first u do the answer witch is 75.33

then u half that witch eqauls 37.665

TOTAL ANSWER:37.665

Do you need/want a calculus answer?

galileo droped a small cannon ball of the top of the leaning tower of pisa. the tower was 40m high what was the speed of the cannon ball when it hit the g round

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We need to first find out how long it took to hit the ground. The position of an object  at any time t is given by

y = -4.9t² +v₀t + h

where y is the position of the object at any time, v₀ is the original velocity and h is the original height in meters

So, in our case, "y" = 0 when the object hits the ground, v₀ = 0 (since the object was dropped, and h = 40     So we have

0 = -4.9t² + 40            And solving this we have

$${\mathtt{0}} = {\mathtt{\,-\,}}{\mathtt{4.9}}{\mathtt{\,\times\,}}{{\mathtt{t}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{40}} = \left\{ \begin{array}{l}{\mathtt{t}} = {\mathtt{\,-\,}}{\frac{{\mathtt{20}}}{{\mathtt{7}}}}\\
{\mathtt{t}} = {\frac{{\mathtt{20}}}{{\mathtt{7}}}}\\
\end{array} \right\}$$ 

= (20/7) seconds

And the velocity at time t =

v = -9.8t

v= -9.8(20/7) = -28 m/s   

Note we have to have the negative because the object is moving downward !!!

50% is 1/2 of a number, so 0.4 would be have of the number that you are looking for. 0.4 time 2 halves is 0.8.

#+#(4)=56 what is the mumbers

Maybe they don't have to be the same number, in which case there a lots of answers

4*14=56

so it could be 

0+14(4)=56

or

52+1(4)=56

or

20+9(4)=56

etc 

In answer to all those people who want to know how to do fractions on this calculator:

Here are some of the replies from various answers; I hope they can help you out:

Re: How do you do fractions on this calculator?

"5 and a half - 8 and a quarter would be

$$\left({\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{2}}}}\right){\mathtt{\,-\,}}\left({\mathtt{8}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{4}}}}\right) = -{\mathtt{2.75}}$$ "(by Melody)

Re: where is the fraction button

"It is a box above a box" (by Anonymous)

"On many calculators out guest is correct. There is no fraction button on the Web2.0calc  You have to use the $$\div$$ button. To enter 3 and 1/2 - 6 and a quarter you would press

$$(3+1\div2)-(6+1\div 4)=$$" (by Melody)

Re: How do we use fractions on this calculator??

"with the $$\div$$ button. If you are doing calculations with mixed numerals it is best to put them in brackets like $$(3+1\div 2)$$" (by Melody)

"You can use forward slash / as we write in a fraction. 6/2 is a fraction. And if there are more numerals involved, use brackets as (6*2+8)/4

I hope it helps." (by novice)

"you simply make it a decmil if 4 were 1/4 i would put 4.25" (by Gman2598)

Thanks to everyone who answered!

by  (Apr 28, 2014 5:44:22 PM)

In answer to all those people who want to know how to do fractions on this calculator:

Here are some of the replies from various answers; I hope they can help you out:

Re: How do you do fractions on this calculator?

"5 and a half - 8 and a quarter would be

$$\left({\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{2}}}}\right){\mathtt{\,-\,}}\left({\mathtt{8}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{4}}}}\right) = -{\mathtt{2.75}}$$ "(by Melody)

Re: where is the fraction button

"It is a box above a box" (by Anonymous)

"On many calculators out guest is correct. There is no fraction button on the Web2.0calc  You have to use the $$\div$$ button. To enter 3 and 1/2 - 6 and a quarter you would press

$$(3+1\div2)-(6+1\div 4)=$$" (by Melody)

Re: How do we use fractions on this calculator??

"with the $$\div$$ button. If you are doing calculations with mixed numerals it is best to put them in brackets like $$(3+1\div 2)$$" (by Melody)

"You can use forward slash / as we write in a fraction. 6/2 is a fraction. And if there are more numerals involved, use brackets as (6*2+8)/4

I hope it helps." (by novice)

"you simply make it a decmil if 4 were 1/4 i would put 4.25" (by Gman2598)

Thanks to everyone who answered!

by  (Apr 28, 2014 5:44:22 PM)

Thank you Bertie,

We like people with good manners and people who make positive comments so thank you  BluePhoenix912, CPhill and anonymous as well!  

Anonymous, why don't you join up - we want lots of members who have good manners!

Hi bioschip,

It is easiest to explain with examples.

square root of 9 is written $$\sqrt9$$  and it equal $$3$$ because $$3\times 3=9$$

The opposite of squaring a number is taking the square root of the number.

For example    $$5^2=25$$    and   $$\sqrt{25}=5$$

$$\sqrt{64}=8$$  because $$8\times 8=64$$

Do you get it now?

An athletic department sold 454 tickets to a sporting event. Adults paid $3.50 per ticket, and students paid $1.00. The total tickets sales were $1,154. How many adults tickets and how many student tickets were sold to the event?

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Call the number of adult tickets sold "x" and the number of student tickets sold "y."

Then the number sold ....x + y = 454

And the revenue is equal to the cost of the adult ticket times the number of those sold plus the the cost of a student ticket times the number of those sold. In math terms, we have .....3.50x + 1.00y = 1154.....this gives the following system...

x + y = 454

3.5x + 1y = 1154    

Subtracting the first equation from the second, we have

2.5x = 700              

divide by 2.5 on each side   this gives

x = 280 = number of adult tickets sold

And the number of student tickets sold =  [454 - 280] = 174

Make sure you check these answers in both equations to see that they "work."

Circumference = 2*Pi*Radius

so

Radius = Circumference/(2*Pi)

Lighthouse B is 8 miles east of lighthouse A. A boat Leaves A and sails 6 miles. At this time it is sighted from B. If the bearing of the boat from lighthouse B is S71W, how far from lighthouse B is the boat?

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Using the law of sines, we need to first find the angle opposite the side of 8....we have

sin 19° / 6 = sin θ / 8

(8)/(6) * sin 19° = sin θ

.434 = sin θ    to find θ, use the inverse sine

sin^-1 (.434) ≈ 25.73°

Then the third angle (opposite the side the distance the boat is from lighthouse B) =

180 - 19 - 25.73 = 135.27°   .....Then calling the distance the boat is from lighthouse B, d, we have, using the law of sines, again

d / sin 135.27° = 6 / sin 19°

d = (6) sin 135.27° / sin 19° ≈ 12.97 miles

just convert the fraction into a decimal by doin 2/3

u got this dont worry

figure it put urself @#$%

Length*Width*Height

That is Vary Smart of you.  

Just divide the Numerator by the Demominator

Close to the amount of planck units in the observable universe.

Just divide the Numerator by the Deminator

Quite crafty, Bertie !!

#+#(4)=56 what is the mumbers

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I'm going to replace your "#" with "x"

So we have      x + x4 = 56 ....  or ... x + 4x = 56.... or..... 5x = 56

Divide both sides by 5      we have

x = 56/5 = "#"

And that's it !!