Which is the simplified form of r^-7 + s^-12? arrows to the left of -7 and -12 represent exponents, options are, a. 1/r^7s^12 b. -r^7 - s^12 c. r^7/s^12 d.1/r^7 + 1/s^12

Answer is D, 1/r^7 + 1/s^12. Im positive 100%

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .