book Maths Puzzle Numerical Ability

What is 8,000,000,000,000 and also 104,300,000,000 written in scientific notation? My teacher made up a worksheet for us and I am having trouble with these.

Thanks so much for your help
Touchdowqu33n17

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I was wondering if you could help me with this problem. This one is on dividing rational expressions.

3x^2(x-4y)-20x(x-4)+25(x-4y)Over 3x^2(4y-x)-14x(4y-x)-5(4y-x) / 4x-1 Over 3x+1 a child must be 50 in tall to ride on a roller coaster . how would I determine how to find this answer?

H > 50

H > 50
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H < 50

H < 50
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