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Ratling [72]
3 years ago
9

HELP me.a man weighs 5/6 of his weight plus 30 pounds.what is his weight.

Mathematics
1 answer:
san4es73 [151]3 years ago
8 0
X=the weight of this man
We can suggest this equation:
5x/6+30=x
least common multiple=6
5x+180=6x
5x-6x=-180
-x=-180
x=180

Answer; his weight is 180 pounds.
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Answer:

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Step-by-step explanation:

1. Let's review the information provided to us to answer the question correctly:

μ of the time a group of boys run the mile in its secondary- school fitness test  = 440 seconds

σ of the time a group of boys run the mile in its secondary- school fitness test = 40 seconds

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Let's find out the z-score, this way:

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Now let's find out the probability of z-score = -2.3, using the table:

p (-2.3) = 0.0107

p (-2.3) = 0.0107 * 100

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