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pav-90 [236]
3 years ago
5

You're taking a multiple choice test that has 8 questions. Each of the questions has 5 choices with one correct choice per quest

ion. If you select one of these options per question and leave nothing blank in how many ways can you answer the question?
Mathematics
1 answer:
Nostrana [21]3 years ago
3 0

This problem is an example of counting principles, since there are 8 questions and each questions has 5 choices with only one correct answer per question. So the number of ways the exam can be answered is 5 ways per question since there 8 questions

5 x 5 x5 x5 x5 x5 x5 x5 = 390625 ways

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Find the given elements of matrix D<br> Please help!!!
TEA [102]

Answer:

Element wise subtraction.

Step-by-step explanation:

Matrix Subtraction is done element wise.

Therefore, D = \[  \left[ {\begin{array}{ccc}   3 & 1 & 0 \\   -1 & 2 & 4 \\9 & 7 & -2  \end{array} } \right]\] - \[  \left[ {\begin{array}{ccc}   5 & 2 & -4\\   1 & 12 & 3 \\ 11 & 3 & -2  \end{array} } \right]\]

This becomes:

\[   D =  \left[ {\begin{array}{ccc}   -2 & -1 & 4 \\    -2 & -10 & 1 \\    -2 & 4 & 0  \end{array} } \right]\]

Now, $ d_{11} = -2 $

$ d_{12} = -1 $

$ d_{13} = 4 $

$ d_{21} = -2 $

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8 0
3 years ago
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Cones A and B are similar.
katen-ka-za [31]

Well it's not possible to find height with knowing cone B's height or radius .Steps provided below if you have pic you can solve by yourself.

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2 years ago
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3 years ago
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So in my math homework lesson today we are learning “Solve One-Step Problems”. I don’t completely understand how to do it. I was
Sedaia [141]

Answer:

Step-by-step explanation:

So, in this problem, we're given the size of the of the file. We are also given the rate of change of the amount-downloaded function.

Notice how the transfer rate is in units of time (25.2 MB/s means 25.2 MB per second).

If we want to calculate how <em>long</em> it'll take to download the entire file, we have to divide the file size by the amount of the MB downloaded in one second. (This is assuming the download rate is constant, in the case it isn't constant, you would use calculus) This will find the total number of seconds needed to download the entire file.

We're essentially solving for t in the equation

400.6 = 25.2t

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7 0
3 years ago
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0 would be correct.
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3 years ago
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