(xy)² - x + y
= (2*4)² - 2 + 4
= 8² + 2
= 64 + 2
= 66
(9x - 3y)²
= (9*2 - 3*4)²
= (18 - 12)²
= 6²
= 36
Answer:
2
Step-by-step explanation:
5x+3x=14+2
8x=16
x=2
...
Answer: the answer is c good luck mate
Step-by-step explanation:
This is an arithmetic sequence question
The formula for the nth term of a sequence is 1+(n-1)d where a is the first term(63360), n is the 55th term, d is the common difference between consecutive terms(63368-63360)=8
Altitude on 55th step= 63360+(55-1)8
=63360+(54x8)
=63360+432
=63792 inches