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andreev551 [17]
2 years ago
14

fred has 10 coins in a book bag. He has 4 quarters, 1 penny, and 5 dimes. If Fred reaches into his book bag and draws a coin wit

hout looking, what is the probability that he will draw a quarter?
Mathematics
2 answers:
Shtirlitz [24]2 years ago
8 0
4/10  or 2/5
there is 4 possible items he needs to pull out of of 10 possible coins
Sindrei [870]2 years ago
3 0
It would probaly be a dime.
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lyudmila [28]
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3 years ago
Solve y = 1/-25 x 8 + 175
Elena L [17]

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174.68

Step-by-step explanation:

Use PEMDAS. First, multiply 1/-25 by 8. (-8/25 or-.32)

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3 years ago
Solve the system. -3x-y=10; y-4z=-13; x-4y+z=4
kvasek [131]

9514 1404 393

Answer:

  (x, y, z) = (-3, -1, 3)

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Many graphing calculators can solve matrix equations handily. Here, we use a combination of methods.

Use the last equation to write an expression for z.

  z = 4 -x +4y

Substitute this into the second equation:

  y -4(4 -x +4y) = -13

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In genera form, the first equation can be written as ...

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Now, the solution to these two equations can be found to be ...

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The solution to the system is (x, y, z) = (-3, -1, 3).

_____

<em>Additional comment</em>

Written as an augmented matrix, the system of equations is ...

  \left[\begin{array}{ccc|c}-3&-1&0&10\\0&1&-4&-13\\1&-4&1&4\end{array}\right]

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2 years ago
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Bezzdna [24]

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3 years ago
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WITCHER [35]

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a = 28

So, the missing length is 28.

4 0
2 years ago
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