Answer:
x = 6
Step-by-step explanation:
first you would put them equal because they have the same angle: 9x + 10 = 2x + 52
subtract 10 from both sides: 9x = 2x + 42
subtract 2x from both sides: 7x = 42
divide by 7 on both sides x = 6
hope this helps! :)
Answer:
(a)


(b)


(c)


Step-by-step explanation:
(a) This is a sequence of consecutive number



(b) This is a sequence of 2 to the power of n - 1. The next number is twice time of this number



(c) This is factorial sequence. Where the next number is this number multiplied by 



Answer:
35 girls, 42 boys
Step-by-step explanation:
Guess and check.
Hope this helps
:)