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2 answers:
Answer: Choice C) 0.000042
There are four zeros between the decimal point and the 4.
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Explanation:
The exponent -5 means we move the decimal point five spaces to the left to go from 4.2 to 0.000042
If the exponent was positive 5, then we would move the decimal point five spaces to the right.
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Answer:
a² = b² -w² +2wx
Step-by-step explanation:
The algebra is pretty straightforward. Expand the expression in parentheses and add x².
b² -(w -x)² = e² = a² -x²
b² -(w² -2wx +x²) = a² -x² . . . . . expand the square
b² -w² +2wx -x² = a² -x² . . . . . . distribute the minus sign
b² -w² +2wx = a² . . . . . . . . . . . . add x²
