Answer:
85m
Step-by-step explanation:
Perimeter of a rectangle = 2(l+b)
b=72m, l=?
perimeter =314m
314=2(l+72)
314/2= l+72
157=l+72
l=157-72
l=85m
#4)
cross multiply
2(8x+10) = 4 * 5x
16x + 20 = 20x
4x = 20
x = 5
Answer:
4,314.6
Step-by-step explanation:
522.98 multiplied by 8.25 is 4,314.585 which rounded to the nearest cent is 4,314.6
Answer:
10
Step-by-step explanation:

Answer:
It should take somewhere between 8 to 9 minutes to decay until there are 30 grams remaining.