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MrRissso [65]
3 years ago
6

Of the students at grant middle school,63% are girls. The school newspaper is randomly selecting a student to be interviewed. De

scribe the complement of selecting a girl and find the probability of the complement. Write the answer as a fraction, decimal, and percent.
Mathematics
1 answer:
Advocard [28]3 years ago
6 0
Complement means the number to make up to the total, so the complement is 37%,<span> 37/100, 0.37 </span>
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Rewrite in simplest radical form 1 . show each step of your process.
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what is this russian math?

Step-by-step explanation:

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(1,2)
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2 years ago
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Kenzie finds purple, blue, and silver space rocks while exploring, 2/3 of the rocks are purple and 3/4 of the remainder are blue
Nadya [2.5K]

Answer:

There were 36 space rocks in total.

Step-by-step explanation:

First, you need to find what fraction of the original rocks are silver.

If 2/3 are purple, then 1/3 of them are not.

If 3/4 of the remaining 1/3 are blue, then 3/4 x 1/3 = 3/12 rocks are blue.

2/3 of the rock are purple, 3/12 of them are blue, and the remaining is silver.

So, you need to do 2/3 - 3/12, then find common denominators so, 8/12 - 3/12 which = 1/12.

This means 1/12 of the rocks are silver. If there are silver rocks, you need to find a suitable equation that needs to be solved.

So:

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There were 36 space rocks in total.

hope this helps :)

3 0
3 years ago
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Find the inverse of ????−7 −2
Masja [62]

Answer:

A^{-1}=\begin{bmatrix}1 & 2\\ -4 & -7\end{bmatrix}

Step-by-step explanation:

A=\begin{bmatrix}-7 & -2\\ 4 & 1\end{bmatrix}

det\ A=-7\times 1-(-2)\times 4\\\Rightarrow det\ A=1

A^{-1}=\frac{1}{det\ A}\begin{bmatrix}1 & 2\\ -4 & -7\end{bmatrix}\\\Rightarrow A^{-1}=\frac{1}{1}\begin{bmatrix}1 & 2\\ -4 & -7\end{bmatrix}\\\Rightarrow A^{-1}=\begin{bmatrix}1 & 2\\ -4 & -7\end{bmatrix}

\therefore A^{-1}=\begin{bmatrix}1 & 2\\ -4 & -7\end{bmatrix}

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3 years ago
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ICE Princess25 [194]

Answer:

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6 0
2 years ago
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