Question

Which of the following describes a situation in which the total distance a basketball player travels is 0 meter from his starting point? (5 points)


The player runs 9 meters forward and then runs 0 meters in the opposite direction.

The player runs 5 meters forward and then runs 6 meters in the opposite direction.

The player runs 6 meters forward and then runs 5 meters in the opposite direction.

The player runs 4 meters forward and then runs 4 meters in the opposite direction.

Answer 1

The player runs 4 meters forward and then runs 4 meters in the opposite direction.

Answer 2

Which of the following correctly uses absolute value to show the distance between −50 and 12? (5 points)


|−50 − 12| = |−62| = −62 units

|−50 + 12| = |−38| = 38 units

|−50 + 12| = |−38| = −38 units

|−50 − 12| = |−62| = 62 units

Answer 3

|−50 + 12| = |−38| = 38 units

Answer 4

Maya is showing her work in simplifying (5.2 − 4.5) − 5.5 + 4.8. Identify any error in her work or reasoning. (5 points)

Step 1: (5.2 − 4.5) − 5.5 + 4.8
Step 2: 5.2 + (− 4.5 − 5.5) + 4.8 (identity property)
Step 3: 5.2 − 10 + 4.8
Step 4: 5.2 + 4.8 − 10 (commutative property)
Step 5: 10 − 10 = 0


She wrote identity instead of commutative in Step 2.

She wrote commutative instead of distributive in Step 4.

She wrote identity instead of associative in Step 2.

She wrote commutative instead of associative in Step 4.

Answer 5

She wrote identity instead of associative in Step 2.