A) V=lxwxh
V = 60.00 cm x 200.00 mm x 1 cm/10 mm x 200.00 m x 100 cm/m
V = 2.400 x 107 cm3
Answer is 2,400 x 107 cm3
(B) D = M/V
M = D x V = 1.00 g/cm3 x 2.400 x 107 cm3 = 2.40 x 107 g
Answer is 2.40 x 107 g
The standard form for 2,350,400,000 would be 2.3504*10^9.
Answer: 2.3504*10^9.
Subtract to find out how much she spent:
30 - 27.90 = 2.10
Divide that by the cost per minute:
2.10 / 0.14 = 15
The call was 15 minutes.
Answer:
The answer is the 3rd one
Step-by-step explanation:
Answer:
4 litres of 12% solution
2 litre of 24% solution
Step-by-step explanation:
Let the 12% solution = l
Let the 24% solution = h
Dimitri needs a total of 6 litres of both :
l + h = 6 - - - - - - - - (1)
He needs a mixture of both volumes of both to give a 16% volume
12%l + 24%h = 16% * 6
0.12l + 0.24h = 0.96 ----(2)
From (1)
l + h = 6;
l = 6 - h
Substitute l =6-h into (2)
0.12(6 - h) + 0.24h = 0.96
0.72 - 0.12h + 0.24h = 0.96
0.72 + 0.12h = 0.96
0.12h = 0.96 - 0.72
0.12h = 0.24
h = 0.24 / 0.12
h = 2
From ;
l = 6 - h
l = 6 - 2
l = 4
