Add. Use a number line only as a check.-69 + (-83)
A. 14
B. 152
C. -152
D. -14
Answer: C
Mathematics
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Solve the problem.According to the Gas Kinetic Theory, the average speed of a gas particle is given by 
where 
is the speed in m/s, k is the constant 1.38 × 10-23, T is the temperature of the gas in Kelvin, and m is the mass of the gas particle in kg. What is the average speed of an oxygen molecule with a mass of
at a temperature of 500 K?
A. 1020 m/s B. 174 m/s C. 575 m/s D. 330,700 m/s
Mathematics
Use the symmetric law to complete the following:
If p = q, then ________.
Mathematics
Solve the equation using the zero-product property.
x2 + 
x + 
= 0
A. 
B. 
C. 
D. 
Mathematics
Solve the system by the substitution method.y = (x + 5)2 + 12x - y + 10 = 0
A. {(-4, 2)} B. {(0, 10), (0, 26)} C. {(-4, 2), (4, 18)} D. {(-5, 0)}
Mathematics