Question

19. For her school science project Shreya performed an experiment in science lab. She prepared
a report where she got different values of freezing points of some gases and her report was
characterized into two categories that was degree Celsius and degree fahrenheit. The given
table shows the freezing points in (°F) of different gases at sea level.
T
Gases
Freezing point at sea level(°F) Freezing point at sea
level("C)
-435
Hydrogen
Krypton
-251
Oxygen
-369
Helium
-458
Argon
-309​

Answer 1

Step-by-step explanation:

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Refer to the above attachment ⬆️⬆️.

Answer 2

Answer:

Let,

x²-3x-2=0

x²-2x-x-2=0

-x(-x-2)+1(-x-2)=0

(-x-2)(-x+1)=0

-x-2=0 (or) -x+1=0

-x=2. (or) -x= -1

x= -2 (or) x=1

Sum of roots= -2+1= -1

product of roots= -2×1= -2

Quadratic equation:-

X²- (sum of roots) X + product of roots=0

X²-(-1)X+(-2)=0

X²+X-2=0