Ok people, how do you solve this problem and express it in correct scientific notation
(7.1*10-2) + (5*10-3) ?
2007-07-09 15:11:54 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Like the people above said, change the exponent, but use the second number:
5*10-3 becomes 0.5*10-2 (you're dividing 5 by 10 and multiplying 10-2 by 10, so overall it's still the same number)
Now add, and get 7.6*10-2.
Notice that this is already in the proper scientific notation (i.e. number between 1 and 10 times 10 to some power)
2007-07-17 03:13:53 · answer #1 · answered by anotherhumanmale 5 · 1⤊ 0⤋
the correct scientific notation is 7.1^(10-2) + 5^(10-3)
the 10 and 2 after the 7 were exponents, right?
2007-07-09 15:20:44 · answer #2 · answered by Mock Turtle 6 · 1⤊ 0⤋
Uniformity of exponent on 10 will do
Change 7.1*10-2 into 71*10-3.
Now you can add that to 5*10-3
And get 76*10-3 as your answer
2007-07-17 05:46:44 · answer #3 · answered by sureshcm m 4 · 1⤊ 0⤋
Its easy to do if the exponents are the same.
So let's change 7.1*10-2 into 71*10-3.
Now you can add that to 5*10-3 and get 76*10-3 as your answer
2007-07-09 15:18:16 · answer #4 · answered by reb1240 7 · 1⤊ 0⤋
7.1^(10-2) + 5^(10-3)
2007-07-17 03:32:02 · answer #5 · answered by mikey 2 · 1⤊ 0⤋
(7.1*10-2) + (5*10-3) = (7.1*10-2) +(0.5*10-2)=7.6*10-2
2007-07-17 05:13:43 · answer #6 · answered by egawwad 1 · 1⤊ 0⤋
7.6*10-2
0.071 + 0.005 = 0.076
2007-07-09 15:21:18 · answer #7 · answered by Steve T 2 · 1⤊ 0⤋