92
given 2a² + 5b²
substitute given values for a and b into the expression
2(- 6)² + 5(2)² = (2 × 36 ) + (5 × 4) = 72 + 20 = 92
Answer: 18
Step-by-step explanation: for the boys 4 times 18 equals 72 so there are 4 rows of 18. for the girls 5 times 18 is 90 so 5 rows of 18.
I think i would be the third one
Answer:
39
Step-by-step explanation:
