Which is an example of discrete data?

A) weight of a bookcase
B) height of a bookcase
C) number of shelves in a bookcase
D) width of a shelf

The answer is C. The number of shelves in a bookcase

Step-by-step explanation:

The answer is C. number of shelves in a bookcase because discrete data can be counted using whole numbers. Height, width, and weight are continuous concepts that are measured in units and fractions of units.

"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629