Question

Which expression is NOT equal to 125? (1 point)

5 times the quotient 5 cubed over two-fifths, raised to the second power
the quotient 5 cubed over 5 to the fourth, raised to the negative 3 power
5 to the negative 2 over 5 to the negative 5
5 times the quotient 5 to the 5 over 5 cubed

Answer 1

Which of the following is equivalent to x^5y^2/xy^2 when x does not equal 0, and y does not equal 0?

x^4

D.

Which expression is not equal to 125?

5(5^3/2/5)^2

A.

A fraction reduces to 36. If its denominator is 6x^5, what is its numerator?

6^3x^5

B.

What is the correct simplification of 5.4x10^12/1.2x10^3 written in scientific notation?

4.5x10^9

B.

Which of the following statements is not true regarding operations with exponents?

To subtract powers with the same base, divide the exponents

B.

Answer 2

choice 1:
= 5 * [5^3 / (2/5)]^2
= by looking at the equation, it's kinda not equal to 125

choice 2:
= [5^3 / 5^4]^-3
= 5^-9 / 5^-12
= 5^(-9 - -12)
= 5^3
= 125

choice 3:
= 5^-2 / 5^-5
= 5^(-2 - -5)
= 5^3
= 125

choice 4:
= 5 * 5^5/5^3
= 5 * 5^(5-3)
= 5 * 5^2
= 5^3
= 125

So the expression that is not equal to 125 is:
5 times the quotient 5 cubed over two-fifths, raised to the second power