Simplify to a single power of 4: 4^6/4^2

To simplify this expression, you can use the property of exponents that states:

a^m/a^n = a^(m-n)

Applying this property to the expression 4^6/4^2, we can subtract the exponents:

4^6/4^2 = 4^(6-2) = 4^4

Therefore, the simplified expression is 4^4.

Which expression is equivalent to 5^-6 x 5^-5?

1. 5^30
2. 5
3. 5^11
4. 1/5^11

To simplify this expression, we can use the rule that states when you multiply two exponents with the same base, you add the exponents together:

a^m * a^n = a^(m + n)

Applying this rule to the expression 5^-6 x 5^-5, we can add the exponents:

5^-6 x 5^-5 = 5^(-6 + -5) = 5^-11

Therefore, the expression 5^-6 x 5^-5 is equivalent to option 4, 1/5^11.

Write the number 7.2 x 10^2

The number 7.2 x 10^2 can be written in decimal notation as 720.

I meant in standard form.

The number 7.2 x 10^2 in standard form is 720.

Write the number 2.1 x 10^-2 in standard form.

The number 2.1 x 10^-2 in standard form is 0.021.

Write the number 100,000 in scientific notation