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How do you write 40000 in standard form?
4.0*104
How do you write 73 thousand in scientific notation?
7.3 × 104
How do you express 0.5 as a percent?
When you have decimals you times them buy 100 to get the percent so .5 equals 50% and .05 equals 5% and .005 equals .5%
Write 10 to the negative 4 power?
10-4 = 1/104 = 0.0001 = 1/10000
How do you solve equations approximately?
You have to isolate your variable to one side of the equation. Add, subtract, multiply, and divide when necessary. Sometimes you will get an approximate answer. This means you cant show all of the decimals. For exmaple lets say your variables equals 1/3. Well you cant possibly write 3 infinite because 1/3=0.333 (with infinite 3s). So you write approximately equal to 0.333 Also when you have a variable that is equal to pi (3.14159... etc) you cant possibly write the infinite amount of decimals for this so you write 3 or 4 decimals and then make sure you indicate it is approximate and not equal.
