Answer:

Step-by-step explanation:
Given

Required
Determine an equivalent expression
Express 81 as 

Apply law of indices






Hence:

17/16 is the answer since 1/2 is equal to 8/16. 8+9 is 17
Answer:
Cube
Step-by-step explanation:
It makes a cube
Including Jamiz, there are 14 girls in the class. If this if half of the total number of pupils (as half are girls, the other half being boys) the total number of students is 14 × 2 = 28 students
Answer:
1/2
Solution: plugging in the given information into the formula you get 2/4 which simplifies to 1/2