Answer:
8 units
is the answer I just graphed it
The required temperature is 180K
<h3>Direct and inverse variation</h3>
Direct variation shows that when a variable is increasing or decreasing the other variable is also increasing/decreasing.
If the volume V of a fixed amount of a gas varies directly as the temperature T and inversely as the pressure P, this is expressed as
V = kT/P
Given that
V = 160 cm³ when T=320 kelvin and P = 12kg, hence;
160 = 320k/12
1 = 2k/12
2k = 12
k = 6
If V = 90 cm³ and P = 16kg/cm², then the value of the temperature is expressed as:
90 = 6T/16
15 = T/16
T = 15 * 16
T = 180K
Hence the required temperature is 180K
Learn more on variation here: brainly.com/question/6499629
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Answer:
21
Step-by-step explanation:
y = 3x + 9
y = -3x + 12
y=21
50 centimeters is the answer. Hope this helps.