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Evaluate the expression. Write your answer in scientific notation.(9×10^−3)+(2.4×10^−5) ÷ 0.0012The answer is 2.9 times 10^-2 I just don't know how to get that.

Evaluate the expression. Write your answer in scientific notation.(9×10^−3)+(2.4×10^−5) ÷ 0.0012The-example-1

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We are given this expression:


(9*10^(-3))+(2.4*10^(-5))/.0012

Let's first evaluate 9 * 10^(-3) by moving the decimal place of 9 to the left 3 times.


9*10^(-3)=.009

Now, let's evaluate 2.4 * 10^(-5) by moving the decimal place of 2.4 to the left 5 times.


.000024

Now, we have this expression:


.009+.000024/.0012

Start by dividing .000024 and .0012 because we must divide before adding.

Now, we have this expression:


.009+.02

Add these terms together to get:


.029

This number, .029 in scientific notation, is 2.9 * 10^(-2) since if we move the decimal place to the left in 2.9 two times, we get .029.

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