There are 12 inches in a foot. Which expressions describe how many inches are in 4 feet? Check the THREE that apply.(3 points)Responses4 × 124 × 1212 ÷ 412 ÷ 412 + 12 + 12 + 1212 + 12 + 12 + 124 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 44 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 412 + 4

1 answer

To find out how many inches are in 4 feet, you multiply the number of feet by the number of inches in one foot:

4 feet×12 inches/foot=48 inches

Now let's analyze the options given to find the correct expressions that result in 48 inches:

  1. 4×12 - This expression correctly computes to 48 inches (4 feet × 12 inches/foot).
  2. 12÷4 - This expression results in 3, which is incorrect for finding the number of inches in 4 feet.
  3. 12+12+12+12 - This adds up to 48 inches (4 instances of 12).
  4. 12+4+4+4+4+4+4+4+4+4+4+4 - The calculations here do not add up to 48, as it sums too high.
  5. 4+4+4+4+4+4+4+4+4+4+4+4 - This expression is incorrect as it sums to 48 but does not use measurements in inches properly based on feet.
  6. 4×12+12 - This expression results in 60 (48 + 12), which is incorrect for our purpose.
  7. 12×4 - This expression correctly computes to 48 (same as option 1).
  8. 4+4+4+4+4+4+4+4+4+4 - This calculates as 40, which is incorrect.

The correct expressions that yield 48 inches are:

  1. 4×12
  2. 12+12+12+12
  3. 12×4

Thus, the three expressions that describe how many inches are in 4 feet are:

  • 4×12
  • 12+12+12+12
  • 12×4