Answer:
I think the answer is -8+-4=-12
It’s like complicated distributive property.
See attachment below.
Hope this helped!
Answer:
x=19
Step-by-step explanation:
cross multiply
(−3)(+5)(3+5)=(−3)(+5)⋅2−3
(−3)⋅3=(+5)⋅2
3(−3)=(+5)⋅2
=19
Answer:
30 grams
Step-by-step explanation:
half life is 60 days so every 60 days the amount 480 grams will be half
in 240 days will decay 240 /60 = 4 times
once 480 /2 = 240
twice 240 /2 = 120
trice 120 / 2 = 60
four times 60/2 = 30 grams will be left