Answer:
If the roots of any equation are equal then it means that their Discriminant = 0
So, b²-4ac = 0
We have given the equation 2x² + kx + 2, where,
a = 2
b = k (we have to find the value)
c = 2
Then, b²-4ac=0
b² - 4(2)(2) = 0
b² - 16 = 0
b² = 16
√16 = 4
Hence the vue of k is 4.
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Step-by-step explanation:
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Answer:
A. Continuous, B. Discrete, C. Continuous, D. Continuous, E. Continuous.
Step-by-step explanation:
A. Area is a continuous unit. Then, the floor area of a kitchen is a continuous random variable.
B. Quantity is a discrete unit. Then, the number of bacteria in a particular cubic centimeter of drinking water is a discrete random variable.
C. The money amount is a continuous unit. Then, the dollar amount of the change in my pocket is a continuous random variable.
D. The pressure is a continuous unit. Then, the barometric pressure at a given location is a continuous random variable.
E. Time is a continuous unit. Then, the difference in reaction time to the same stimulus before and after training is a continuous random variable.
Answer:
3/4
Step-by-step explanation:
