The water level of a river is below normal levels. Its water level is at 1 1/2 meters below sea level. During the summer, the river drops another 2 1/3 meters below sea level. What is the water level at the end of summer? Remember, the elevation is below sea level. Account for this in your answer.

3 answers

To find the water level of the river at the end of summer, we need to add the two negative elevations:

  1. Initial Water Level: 112 meters below sea level

    • Converting this to an improper fraction: 112=32 meters below sea level
  2. Summer Drop: 213 meters below sea level

    • Converting this to an improper fraction: 213=73 meters below sea level

Next, we need to add these two values together. Since both are below sea level, we will combine them, keeping in mind that they are both negative values.

We need a common denominator to perform the addition. The least common multiple of 2 and 3 is 6.

  1. Convert both fractions to have a denominator of 6:

    • For 32: 32=3×32×3=96
    • For 73: 73=7×23×2=146
  2. Now, we can add the fractions: 96+146=9+146=236

This result, 236 meters, means that at the end of summer, the river is 236 meters below sea level.

  1. Converting 236 to a mixed number: 23÷6=3 remainder 5 Therefore, 236=356 meters below sea level

Thus, the water level at the end of summer is 356 meters below sea level.

it says its wrong

Let’s carefully re-evaluate the calculations to make sure we arrive at the correct answer step-by-step.

  1. Initial Water Level: The initial water level is given as 112 meters below sea level, which can be expressed as: 112=32 meters below sea level

  2. Summer Drop: The river drops another 213 meters below sea level, which can be converted as: 213=73 meters below sea level

  3. Combining the Values: To find the total drop from sea level, we need to add these two quantities: Total=32+73

  4. Finding a Common Denominator: The least common multiple of 2 and 3 is 6.

    • Convert 32 to a denominator of 6: 32=3×32×3=96

    • Convert 73 to a denominator of 6: 73=7×23×2=146

  5. Adding the Converted Fractions: 96+146=9+146=236

  6. Final Calculation:

The water level at the end of summer is at 236 meters below sea level.

To express 236 as a mixed number:

  • Divide 23 by 6, which gives 3 with a remainder of 5: 23÷6=3(whole part),remainder 5 Thus, 236=356.

Therefore, the water level at the end of summer is 3 56 meters below sea level.

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