Question

A calculator outputs an expression of 5.1E - 2. Which is an equivalent value?

A 5.1 x 10-2
B -215
C 510
D 5.1 + 1020

Answer 1

The correct option is;

A. 5.1 × 10⁻²

Explanation:

Given that the output of the calculator is 5.1E-2, which is in the scientific notation format, made use when the numerical values of the variable are very large or are very small, such that to completely write out such numbers may lead to occupying the majority of the available writing space

The number written as 5.1E-2 is the same as writing the number as 5.1 × 10⁻² which is also the same as 0.051.