E and C are correct. Although E is the simplified answer
Answer:x-4
Step-by-step explanation:because (-1)x(-1)=1
Answer:3
Step-by-step explanation:720 (the amount he uses) and divide it by 240 (which is the amount to make one cake) and it gives you 3
Answer:
Step-by-step explanation:
6.3x103 kg sand x 1x103 g/kg x 1 grain sand/7x10-5 g sand = 9x1010 grains of sand = 90 billion grains of sand.