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is3535
 one year ago
help
is3535
 one year ago
help

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phi
 one year ago
Best ResponseYou've already chosen the best response.1your problem is like a*x + b*x factor out the x (a+b) * x in your case the "decimals" are like a and b, and x is like 10^10

phi
 one year ago
Best ResponseYou've already chosen the best response.1yes, I know. Do you know how to "factor out" 10^10 ?

phi
 one year ago
Best ResponseYou've already chosen the best response.1ok do you know how to distribute the 10 in this: 10* ( 2 + 3) ?

phi
 one year ago
Best ResponseYou've already chosen the best response.110*(2+3) can be written as 10*2 + 10*3 factoring out 10 "undoes" that we want to do that with your problem \[ 2.9\cdot10^{10} + 5.35\cdot10^{10}= (2.9+5.35) \cdot 10^{10} \]

phi
 one year ago
Best ResponseYou've already chosen the best response.1now use order of operations: do the operation inside the parens (i.e. add)

is3535
 one year ago
Best ResponseYou've already chosen the best response.0my answer is 82.5x10^11

phi
 one year ago
Best ResponseYou've already chosen the best response.1what do you get when you add 2.9 and 5.35

phi
 one year ago
Best ResponseYou've already chosen the best response.18.25 so 8.25 * 10^10 if you want this in scientific notation, then you want the number "out front" to be 1 or bigger , but less than 10 8.25 is bigger than 1 and smaller than 10 so it's ok \[ 8.25 \cdot 10^{10} \]

is3535
 one year ago
Best ResponseYou've already chosen the best response.0do you want me to time it

phi
 one year ago
Best ResponseYou've already chosen the best response.1you mean write it as 8.5x10^10 (with an "x" ?) I used a dot (or *) because in algebra we use x for variables. but anyway you write it , it means the same thing. 8.25 times 10^10 the answer is not 82.5 x 10^11 the answer is 8.25 x 10^10 which can be written as 82.5 x 10^9 (but this is *not* scientific notation because 82.5 is too big)

is3535
 one year ago
Best ResponseYou've already chosen the best response.0that my answer is 8.25 x 10^10
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