Step-by-step explanation:
we have 8 equally "heavy" batches.
one weighs 3.9 × 10^-10 g
so, the total sample then weighed
8 × 3.9 × 10^-10 = 31.2 × 10^-10 = 3.12 × 10^-9 g
Answer:
DEF =77.4 inches I attached an answer sheet so you can know how to work out the problem
65-9=56
56 divided by 8 is 7
So they will need 7 tents
X = 72 and it's a scalene triangle