The 2-digit prime numbers are 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and 97. Thier sum is 1043.

ya it is correct Anonymou but question asked is just 5(r+9) - 2(1-r) there is no =0 if it is there we should solve 

ofcourse your answer is correct good

5(r+9) - 2(1-r)

5r+45-2-2r=0

3r+43=0

3r=-43

r=-43/3=-14 1/3

i think it may be the answer you have questened.the answer must be checked.......

Velocities are strange beasts. Relativity theory tells us rapidities (the sum of the accelerations experienced by an object) are more intuitive quantities. Rapidities are directly observable quantities (external observers relate these to blue/redshifts). And unlike velocities, rapidities do sum up. Velocities depend non-linearly on rapidities, and therefore velocities follow a more complex addition rule.

Imagine three observers A, B and C all moving along a railway track. Observer A measures B to have velocity vAB. From B's perspective C has a velocity vBC. And to close the circle, from C's perspective A has velocity vCA.

Common experience (encoded in so-called Galilean relativity) tells us these velocities simply add up to zero:

vAB+vBC+vCA=0

This is wrong. It ignores a non-linear term that becomes important at speeds approaching the speed of light c. Lorentzian relativity tells us the correct equation is:

vAB+vBC+vCA+vAB.vBC.vCA/c2=0

This is all the math you need. Give it a try. Enter vAB=0.9c and vBC=0.9c and see what value you get for vAC=−vCA.

5(r+9) - 2(1-r)

5r+45-2+2r

7r+43 is the answer

joey and john are playing with cards. if john gives joey one card, they will have an equal number of cards. when you square the number of cards joey has, the result is equal to four more than three times the number of cards john has. what is the total number of cards joey and john have?

John has 7 cards and Joey has 5 cards. So, the total is 12 cards, because:

5^2=7 x 3 +4=25

what is 35.7 rounded to the nearest dollar?

Well, if the fraction is .5 or greater, then you add 1 to 35

So your answer is 35 + 1=36

whats the remainder of 16021 divided by 25

16021/25=640 21/25

So, your answer is 640 and a remainder of 21

The diameter of DNA is about 20 Angstrom. Express the surface area of the molecule in m^2 and in^2. (A=pi d^2) 1A= 1x10^-10; 1m=39.37 in.

It seems to me that you have nothing else to do! The DNA has a highly convoluted structure & is NOT a perfect circle!!!. Even so, it can easily be calculated, given your assumptions. I would say that it would be an exercise in futility & a waste of time! Good luck.

hello kindly help me how to convert 0.55ml to microliter/sec? thanksss

Well, a ml=1000 microliter

So, .55ml x1000=550 microliters. The/sec? has nothing to do with it, because this is a measure of Volume. Seconds don't enter into it.

〖𝑃𝐶5〗^𝑀𝑒𝑎𝑠=∑_(𝑠=1)^16▒〖𝐶_(𝑃𝐶5,𝑠) (𝑑𝑅/𝑅)_𝑠 〗

Well Smart Aleck! YOU ARE A FIRST-RATE CLOWN!!!!!!!

1/12+1/18

=> 1/12=0.0833333333333333

=> 1/18=0.0555555555555556

=> 1/12+1/18=0.1388888888888889

how is 1/12+1/18=0.1388888888888889

Because 1/12=.083333333......

And 1/18      =.055555555.......

You add the two together and you get=.13888888888888889

3x^2 + 6X -5=0

How about: x = 1/3 (2 sqrt(6)-3)

24 and 12 how much?

answer: 24+12=36

-5a+6a 

=a

8.4 as a fraction

How about 8 4/10=84/10

what is 12^5 power?

How about =248,832

how to write 84,000 in scientific notation?

How about 8.4 x 10^4

Melody, the only reason why you support nature is cuz you're part of nature, in a PARROT NEST, REMEMBER?

and the only reason why Dragonlance supports nature is that he works (or even lives?) ON A FARM, REMEMBER?

and I've tried going with nature once, like camping and hiking, but what's so special about sleeping in a uncomfortable sleeping bag with little privacy space, and a risk of getting attacked when you're in a secure house, with lots of space, perfect as any HQ, gets an actual fancy bag, and most importantly, has a roof to where RAIN WONT FALL THROUGH THE ROOF!!!???

and what's so special about breaking bones, getting all sore, and tired, having to drive or walk home, when you could've DONE IT IN A TREADMILL AND HAVE A GATORADE TO FUEL YOU!!?

sorry guys, but Elements don't combine with Nature

0.55ml/min=1000ul/1ml*1min/sec=550ml/sec

=9.2ul/sec

"How do you pass physics if I'm not a science person"

You are asking me how can I pass physics when you are not a science person.

Well, I do not see that one has much to do with the other   

It is my abilities that would count ....  not yours         

to find a difference you must minus

20320 -  -280  = 20320+280 = you can finish it :)

1000g = 1 kg

so

1g = 1/1000 kg = 0.001 kg

1g/cm^3 = 0.001kg / cm^3

@@ End of Day Wrap   Thurs 27/8/15     Sydney, Australia Time   9:26pm       ♪ ♫   

Hi All,

There were lots of great questions, some are not answered  

BUT many are answered  and our illustrious answerers were CPhill, Radix, TitaniumRome, EthanPendence, Geno3141, asinus and BioSilverastine.  A big thank you goes to each of you :))