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3 years ago

The figure is made up of a hemisphere and a cylinder.

Mathematics

2 answers:

Reika [66]3 years ago

7 0

Answer: 216 ( pi symbol)

Step-by-step explanation: so i got it wrong- and it’s told me this was right lol

nevsk [136]3 years ago

4 0

Answer:

it 90 then the pie thing

Step-by-step explanation:

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Two glasses of milk and 3 snack bars have a total of 54 carbohydrates (carbs), and 4 glasses of milk and 2 snack bars have a to

Allushta [10]

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anvanted stollen has arrived in 95% natcges

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3 years ago

Also need help with this on I especially don’t get this one

Artyom0805 [142]

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4 years ago

An electronic system has each of two different types of components in joint operation. Let X and Y denote the lengths of life, i

AURORKA [14]

Answer:

The average cost is $E(C) = 66$

The standard deviation of cost is $\sigma = 9.798$

Step-by-step explanation:

From the question we are told that

$E(X) = 4$

$E(Y) = 2$

$E(X^2) = 24$

$E(Y^2) = 8$

The cost of replacing the two component is C = 50 + 2 X + 4 Y

The variance of X is mathematically represented as

V(X) = $E(X^2) - [E(X)]^2$

Substituting values

$V[X] = 24 - 4^2$

$V[X] =8$

The variance of Y is mathematically represented as

V(Y) = $E(Y^2) - [E(Y)]^2$

Substituting values

$V[Y] = 8 - 2^2$

$V[X] =4$

The average of replacing the two component is

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

substituting value

$E(C) = 50 + 2 * (4) + 4* (2)$

$E(C) = 66$

The variance of replacing the two component is

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

and X and Y are independent

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

substituting values

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

=> $V(C) = 32 + 64$

=> $V(C) = 96$

The standard deviation is

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

substituting values

$\sigma = \sqrt{96}$

$\sigma = 9.798$

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3 years ago

N is an integer<br> write down all the possible values of n<br><br> -2≤n<5

melisa1 [442]

Answer:

-2, -1, 0, 1, 2, 3, 4

Step-by-step explanation:

The number has to be smaller than 5 but greater than or equal to - 2

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3 years ago

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How can you recognize when a pattern in real life is linear or nonlinear?

andreev551 [17]

Answer:

Step-by-step explanation:

If a table is linear, Y must change at a constant rate as X increases by 1. If a table is not linear, Y doesn't change at a constant rate at all. In fact, nonlinear tables don't even have an equation because there's no predicting what the Y-value is.

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3 years ago

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