Question

Mischa dives from a platform that is 5 meters above water. Her dive takes her 2.1 meters below the surface of the water. Which expression could represent the distance, in meters, that Mischa dives? Select all that apply. O 15 - (-2.1) O 1-(2.1) - (-5) O 12.1 - 51 O -(2.1) - 51 O 15+ (-2.1)

Answer 1

The total distance Mischa dives, which combines the distance from the platform to the water and the distance below the surface, can be represented by the expression 5 + (-2.1), resulting in a total of 7.1 meters.

Step-by-step explanation:

The distance Mischa dives could be represented by summing the distance from the platform to the water's surface and then the additional distance she travels from the surface underwater. Since Mischa dives from a platform that is 5 meters above water and then goes 2.1 meters below the surface, we add these two distances together for a total distance dived.

The correct expression that combines these two distances would be 5 + 2.1, which equals 7.1 meters. Therefore, the only expression that correctly represents the distance Mischa dives is 5 + (-2.1), because -2.1 represents the descent below the surface, and you are adding it to the initial 5-meter dive from the platform to the water's surface. The negative sign before 2.1 accounts for the direction of the dive below the surface level.

In conclusion, Mischa's total dive distance is represented by the expression 5 + (-2.1), which equals 7.1 meters.

Answer 2

The expressions that could represent the distance Mischa dives are 15 - (-2.1) and 15+ (-2.1).

Step-by-step explanation:

The expression that could represent the distance, in meters, that Mischa dives is 15 - (-2.1) or 15+ (-2.1).

When Mischa dives from a platform that is 5 meters above water and her dive takes her 2.1 meters below the surface of the water, we can calculate the total distance she dives by adding the distance above water (5 meters) with the distance below the surface (2.1 meters). The expression 15 - (-2.1) represents this calculation, which gives us 15 + 2.1 = 17.1 meters. Similarly, the expression 15+ (-2.1) also represents the same calculation, resulting in 15 - 2.1 = 12.9 meters. Therefore, both expressions represent the distance that Mischa dives.