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tatyana61 [14]
2 years ago
7

-2x^2+bx -5 Determine the b-value that would ensure the function has two real root.

Mathematics
1 answer:
anastassius [24]2 years ago
8 0

Answer:

  • No solution

Step-by-step explanation:

Given is the quadratic function

  • y = -2x² + bx - 5

In order to have two real roots the discriminant should be posivive

  • D = - b² - 4ac
  • D = - b² - 4(-2)(-5) = - b² - 40

We need D > 0

  • -b² - 40 > 0
  • b² + 40 < 0
  • b² < - 40

There is no solution as b² is never negative

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3 years ago
Every day, Luann walks to the bus stop and the amount of time she will have to wait for the bus is between 0 and 12 minutes, wit
Nana76 [90]

Answer:

a. 341.902.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

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