How do you wright twelve and a half trillion in scientific notation?
2 answers:
The <em>correct answer</em> is:
Explanation:
First we must determine where the trillions place is in place value. The first group of 3 digits is thousands; the second group of 3 is the millions; the third group of 3 is the billions; and the 4th group of 3 is the trillions. This means that 1 trillion would be a 1 with 12 zeros following it.
This means that 12 trillion would be 12 with 12 zeros following it. The "half" would be a 5 immediately after the 12, which would give us
12,500,000,000,000
Scientific notation requires 1 non-zero digit in front of the decimal. This means we would have 1.25. The exponent of 10 is the number of decimal places we must move the decimal; for this number, that is 13 places. This gives us
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Answer:
<-3,4>
<0,-5>
Step-by-step explanation:
|-3w| = 15
3|-w| = 3|w| = 15
|w| =
|w| = 5
- If vector w is represented by <1,-9>
Then |w| = .
Therefore this is not possible.
- If vector w is represented by <-3,4>
Then |w| = .
Therefore this is possible.
- If vector w is represented by <4,5>
Then |w| = .
Therefore this is not possible.
- If vector w is represented by <-5,-3>
Then |w| = .
Therefore this is not possible.
- If vector w is represented by <0,-5>
Then |w| = .
Therefore this is possible.
(NOTE : if z vector is represented by <x,y> then |z| = )