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3 years ago

If the variance of the "number of daily parking tickets issued is 100, the standard deviation is defined as the

1 answer:

4 0

Generally according to mathematical formulas the standard deviation is defined as the square root of the variance.Same formula applied to this question where variance is 100 which results that standard deviation is 10.Whereas variance is the square of the standard deviation which is 100 derived in the question.

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What is the value of C in the matrix equation below?

lara [203]

Given:

The matrix equation is:

$\begin{bmatrix}-18&3&5\end{bmatrix}-C=\begin{bmatrix}-22&1&12\end{bmatrix}$

To find:

The value of matrix C.

Solution:

Let $A=\begin{bmatrix}-18&3&5\end{bmatrix},B=\begin{bmatrix}-22&1&12\end{bmatrix}$ . Then the given equation can be rewritten as

$A-C=B$

$-C=B-A$

$C=-(B-A)$

$C=A-B$

On substituting the values of the matrices, we get

$C=\begin{bmatrix}-18&3&5\end{bmatrix}-\begin{bmatrix}-22&1&12\end{bmatrix}$

$C=\begin{bmatrix}-18-(-22)&3-1&5-12\end{bmatrix}$

$C=\begin{bmatrix}-18+22&2&-7\end{bmatrix}$

$C=\begin{bmatrix}-4&2&-7\end{bmatrix}$

Therefore, the correct option is C.

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3 years ago

Read 2 more answers

An account earns simple interest.

Mashcka [7]

Answer: $2280 A.) 280

Step-by-step explanation:

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2 years ago

The number 3.453 has two 3s.Why does each 3 have a different value

ahrayia [7]

Hello There!

They're in different places the 3 in the ones place couldn't equal as much as the three in the thousands place. It all depends on where the numbers are in relation to the decimal.

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3 years ago

Pls??? I’ll help u if u help me!!!

il63 [147K]

Answer: the answer is 21

Step-by-step explanation:

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3 years ago

A coin tosses 100 times 52 heads and 48 tail what is the probability of flipping a tail on the coin

Pie

Answer:

The answer is 48/100 or 12/25

Step-by-step explanation:

Since there is 48 tails and 100 times flipped the answer would be 48/100 and if you ask for the probability of flipping the heads that would be quite the same and its 52/100. So the ANSWER IS 12/25.

8 0

4 years ago