53-49=4
4 times 12=48. the unknown number is 48
Answer:
3 raise to -7 ÷3 raise to -10 × 3 raise to -5
3 raise to -7-(-10)×3 raise to -5
3 raise to 3×3 raise to -5
3 raise to 3+-5
3 raise to -2
1/3²
1/9
hope it helps you!
Answer:
7.8*10^7
1.0 * 10^4
Now divide 7.8/1.0 and the power goes up to be subtracted
=7.8 * 10^(7-4)
= 7.8 * 10^3

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Steps:
1st write out equation
Second write the conjugant and multiply it.

After multiplying you should get,

now after simplifying you should get
