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adoni [48]
2 years ago
11

Please help me out with this problem

Mathematics
1 answer:
ivanzaharov [21]2 years ago
4 0

Answer:

A 4/3

Step-by-step explanation:

to long to explain but its right

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2=(-3)+5x<br> Solve for x
slega [8]

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Step-by-step explanation: I don't know how to explain it.

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Stells [14]

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Step-by-step explanation:

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What are the number of integral solutions of the equation 2x+2y+z=20 such that x&gt;=0 , y&gt;=0 , z&gt;=0?
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2x+2y+z=20\\&#10;z=\dfrac{20}{2x+2y}\\&#10;z=\dfrac{10}{x+y}

Now, for z to be an integer, the sum x+y must be a divisor of 10. 
It has to be a positive divisor since z≥0. Also x≠y.

x+y=1 \\&#10;x=1-y\\&#10;
x≥0 and y≥0 so y can be equal to either 0 or 1. There are 2 solution in this case.

x+y=2\\&#10;x=2-y\\
In this case, y can be equal to 0,1, or 2, but for y=1 ⇒ x=1, so there are two solutions.

x+y=5\\&#10;x=5-y
y can be 0,1,2,3,4 or 5 - 6 solutions

x+y=10\\&#10;x=10-y
y can be 0,1,2,3,4,5,6,7,8,9,10, but for y=5 ⇒ x=5, so 10 solutions.

2+2+6+10=20 solutions in total.
6 0
3 years ago
A copy machine makes 32 copies per minute. How many copies does it make in 4 minutes and 15 seconds?
ki77a [65]

Answer:

136

Step-by-step explanation:

32*4=128

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128+8=136

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3 years ago
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