Answer:

Step-by-step explanation:
This is just a perfect square
Answer:
Step-by-step explanation:
Option A is the correct answer
Because the further process is correct
Answer:
2
Step-by-step explanation:
Difference = 10 - 8 = 2
Hope it helps you in your learning process.
Answer:
C
Step-by-step explanation:
Given:

Changing the division to multiplication by taking the reciprocal of the second fraction.

<u>The correct option is C</u>
19.
2568.75 - 2500 = 68.75;
( ? / 100 ) * 2500 = 68.75 ;
? * 25 = 68.75;
? = 68.75 ÷ 25
? = 2.75;
r = 2.75 %