belinda used her calculator to find the decimal for the fraction 21/28.

When she entered 21/28, the calculator gave her an answer that looked familiar. Why do you think she recognized it?

21/28 = 3/4 = 0.75

ty ur so fricken awesome o and its stacey not kimberly wut ever

Belinda may have recognized the decimal answer because it is a terminating decimal or a repeating decimal. Terminating decimals end after a certain number of digits, such as 0.75. Repeating decimals have a repeating pattern of digits, such as 0.333... where the 3 continues indefinitely.

Belinda recognized the answer because it is a simplified or reduced form of the fraction. To understand why it looked familiar, we need to find the decimal equivalent of the fraction 21/28. To do this, we divide the numerator (21) by the denominator (28):

21 ÷ 28 = 0.75

The decimal equivalent of 21/28 is 0.75. The reason Belinda recognized it is because 0.75 is a commonly known fraction equivalent, which is 3/4. Therefore, the simplified version of 21/28 is 3/4, and Belinda recognized it because 3/4 is a familiar and commonly used fraction.