Answer:
$300
Step-by-step explanation:
Multiply 1,200 by .25 and that is your answer
3ab - 3a - 8 + 4ab + 8
7ab -3a
Answer:
194.5315427 grams
Step-by-step explanation:
The half-life of element x would be 66 years. So, after 20 years you would have:
.5^(20/66) x 240=0.810548 x 240
=194.5315427 grams of the element left ......
I’m sorry that’s not my level but i would love to help
Sum means add
difference means subttract
x+y=1
x-y=11
add the 2 equations together
2x+0y=12
divide 2
x=6
subitute
6+y=1
subtract 6
y=-5
x=6
y=-5
