Answer:
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Answer: price of soda (a) = $2 and price of popcorn (b) = $0.5
Step-by-step explanation:
Let's denote soda = a and popcorn = b
Kaylin bought a soda and two popcorn, writing out an equation for this would be
a + 2b = $3...........equation (i)
And her brother bought 3 sodas and 1 popcorn.
3a + b = $6.50..........equation (ii)
From equation (i),
a + 2b = 3
Making a the subject of formula,
a = 3 - 2b......equation (iii)
Using substitution reaction, put equation (iii) into equation (ii)
3(3 - 2b) + b = $6.50
9 - 6b + b = 6.50
9 - 5b = 6.50
Collecting like terms,
5b = 9 - 6.50
Divide both sides by 5,
b = 5.
Put b = 5 into equation (i)
a + 2(0.5) = 3
a + 1 = 3
a = 2
Therefore, the price of soda is $2 per one and $0.5 for each popcorn.
Assuming constant pressure, V/T = constant.
Where T is absolute temperature, and V is volume.
T1 = 60 ° + 273.15 = 333.15 K
V1 = 300 cm^3
T2 = 30°C + 273.15 = 303.15 K
V2 = ?
V1 / T1 = V2 / T2 = > V2 = [V1/T1] * T2
V2 = [300cm^3 / 333.15K] * 303.15K = 272.9 cm^3
Answer: 272.99 cm^3
Answer:
$96
Step-by-step explanation:
First you would divide 60 by 5 which gives you 12.
Second, you would times 12 by 8 which gives you $96.
Answer:
67
Step-by-step explanation:
