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Katyanochek1 [597]

2 years ago

14

The morning temperature is -15° by the afternoon the temperature rises by 20° right in addition expression for the afternoon tem

perature and then to show this and find the temperature in the afternoon

1 answer:

GrogVix [38]2 years ago

8 0

Answer:

The afternoon temperature is

5°

Step-by-step explanation:

Step one:

given data

the morning temperature= -15°

the afternoon temperature rose by 20°

Required

The afternoon temperature

Step two:

Hence the afternoon temperature is given as

=-15°+20°

= 5°

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a

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Step-by-step explanation:

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The variance of Y is mathematically represented as

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$E(C) = 2 * E(X) + 4* E(Y)$

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$V(C) = V(50 + 2X +4Y)$ Note: The variance of constant is zero

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=> $V(C) = 2^2 * V(X) + 4^2 * V(Y)$

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=> $V(C) = 4 * 8 + 16 * 4$

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=> $V(C) = 96$

The standard deviation is

$\sigma = \sqrt{V(C)}$

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