Question

question 5
in a science experiment, corine rounded the mass of a chemical to the nearest hundredth of a gram. the rounded mass of the chemical is 21.65 grams. which of the following could be the actual mass of the chemical?
a) 21.655 grams b) 21.647 grams
c) 21.644 grams d) 21.605 grams
question 7
a group of friends played a computer game

• jordan scored two hundred sixteen thousa
• madison scored 210,634 points.

Explanation:

Step1: Define rounding range

A number rounded to 21.65 (nearest hundredth) must satisfy:
$$21.645 \leq \text{Actual Mass} < 21.655$$

Step2: Check each option

• A) $21.655$: Equal to upper limit, excluded
• B) $21.647$: $21.645 \leq 21.647 < 21.655$, valid
• C) $21.644$: Less than lower limit, invalid
• D) $21.605$: Less than lower limit, invalid

Answer:

B) 21.647 grams