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2 years ago

Nancy purchased some bed sheets for $36. They were on sale for 25% off. What was the original price of the bed sheets

Mathematics

2 answers:

Naily [24]2 years ago

7 0

The original price of the bed sheets is $48.

Nimfa-mama [501]2 years ago

5 0

100-25=75.
25% off means 75% of original price.

Set original price as x.
0.75x=36
x=48

The original price was $48.

Hope this helps!

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Answer:

6.7% of children who finished the race in under 45 seconds.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 75 seconds

Standard Deviation, σ = 20 seconds

We are given that the distribution of time of completion is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(finished the race in under 45 seconds.)

P(x < 45)

$P( x < 45) = P( z < \displaystyle\frac{45 - 75}{20}) = P(z < -1.5)$

Calculation the value from standard normal z table, we have,

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Answer:

not possible.

Step-by-step explanation:

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subtracting 120 from both the sides,

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