Step-by-step explanation:

Answer:
r=2.9cm
Step-by-step explanation:
we know the formula, mass= density*volume
as a result we can figure out the volume = mass/density
=485/8 cm^3
=60.625cm^3
here comes another formula of volume of cone = 



we will use this to find the radius,



=60.625


=181.875
h is 70mm which we will turn to 7cm

*7=181.875
=8.27
r=2.875825cm
r=2.9cm
nice question. hope this helps
If 8 boxes weigh 30 pounds that means that 4 boxes are going to weigh lighter so 8/4 is 2 so u do 30/2 so ur answer is 15
Answer:
It is 16.4 %
Step-by-step explanation:
Subtract 1581 and 1321 to get how much it decreased.
It decreased by 260 so find what percent of 1581 is 260.
260/1581 = 0.164 which is 16.4 %
Kiran atttended 18 parent-teacher conferences and 18 school-related assemblies.
Let x represent the number of parent-teacher conference and y represent the school-related assembly.
Since Kiran earns $1008 for 36 paid events, hence:
x + y = 36 (1)
34x + 22y = 1008 (2)
Solving equations 1 and 2 simultaneously gives:
x = 18, y = 18
Therefore Kiran atttended 18 parent-teacher conferences and 18 school-related assemblies.
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