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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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Answer:

(1/2) (4k) + 12 = 2k + 12

7 0
3 years ago
A rectangular swimming pool measures 50 meters in length and 25 meters in width.
GrogVix [38]

Answer:

width = 5cm

length = 10cm

Step-by-step explanation:

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2. 25 metres in real life is 5 centimetres on paper so width = 5 cm

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Please help me with this
Gnoma [55]

Given:

The equation is:

3^x\times 9=3^{2n-1}

To find:

The value of n in terms of x.

Solution:

We have,

3^x\times 9=3^{2n-1}

It can be written as

3^x\times 3^2=3^{2n-1}

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On comparing the exponents, we get

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