3 years ago

Given b= 4 and c= -5, evaluate b2 - c2. 41 -2 -9

Mathematics

1 answer:

irina [24]3 years ago

4 0

Answer:

-9

Step-by-step explanation:

b² - c²

= 4² - (-5)²

= 16 - 25

= -9

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Answer:

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Step-by-step explanation:

Given

$Cube = \{1,2,3,4,5,6\}$

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$Spinner = \{A,B,C,D,E,F,G,H\}$

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See attachment for spinner

Required

$P(Cube \ge 5\ and\ Spin[A])$

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So, the probability is:

$P(Cube \ge 5) = \frac{n(Cube \ge 5)}{n(Cube)}$

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On the spinner, we have:

$Spin [A] = \{A\}$ ---- i.e. 1 outcomes

So, the probability is:

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$P(Cube \ge 5\ and\ Spin[A])$ is calculated as thus:

$P(Cube \ge 5\ and\ Spin[A]) = P(Cube \ge 5) * P(Spin[A])$

$P(Cube \ge 5\ and\ Spin[A]) = \frac{1}{3} * \frac{1}{8}$

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