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linandrew41 linandrew41 · Answer 1 · 2022-03-03T19:50:47+01:00

[tex]\frac{7.5*10^{12} }{2.5*10^{4} } =\frac{7.5}{2.5} *\frac{10^{12} }{10^{4} } = 3 * 10^{12 - 4} = 3*10^8[/tex]

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jimthompson5910 jimthompson5910 · Answer 2 · 2022-03-03T19:51:59+01:00

[tex]3 \times 10^8[/tex]

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Explanation:

Divide 7.5 over 2.5 to get 3

Dividing the other terms means we subtract the exponents using this rule

[tex]\frac{a^b}{a^c} = a^{b-c}[/tex]

So,

[tex]\frac{10^{12}}{10^4} = 10^{12-4} = 10^8[/tex]

Overall,

[tex]\frac{7.5 \times 10^{12}}{2.5 \times 10^4} = 3 \times 10^8[/tex] which points to choice C

If you wanted to expand this out, then 3.0 becomes 300,000,000 = 300 million after moving the decimal point 8 spots to the right.