2.5*6.4=16, 2.5*4.8=12. 12+12+16+16=56
-243, 729, -2187
Take the previous term and multiply by negative three.
Answer:
-1 + 2a = 9
Step-by-step explanation:
Answer:
150 cm²
Step-by-step explanation:
front+back: 2*9*3 = 54 cm²
left+right: 2*3*4 = 24 cm²
top+bottom: 2*9*4 = 72 cm²
sum: 150 cm²