Answer:
10,000,000
Step-by-step explanation:
log10 x = 7
10^7 = 10,000,000
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75 mins or 1 hour 15 min :)
It’s a great way to write numbers that are very big numbers or very small numbers.
Have a great day!
the second one , why? because 7a-12a=-5a
4 - 8 = -4
