It cost $50 plus $10 per hour to rent a park pavilion .

2 answers:

6 0

$50 plus $10 per hour

so 8 hour = 10 * 8 = $80

$50 + $80 = $130

answer : the cost of renting the pavilion for 8 hour = $130

vovangra [49]3 years ago

6 0

Ok so we have $$50+10h$
$50+10(8)$
$50+80$
this equals $130 for 8 hours

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The lifetimes of 10,000 watch batteries are normally distributed the mean lifetime is 500 days the standard deviation is 60 days

Lelu [443]

Given:
μ = 500 days, the population mean
σ = 60 days, the population standard deviation

Therefore
μ + σ = 560
μ - σ = 440
μ + 2σ = 620
μ - 2σ = 380
μ + 3σ = 680
μ - 3σ = 320

The figure shown below illustrates the normal distribution
About 68% of the total area lies in x = (μ-σ, μ+σ)
About 95% of the total area lies in x = (μ-2σ, μ+2σ)
About 99.7% of the total area lies in x = (μ-3σ, μ+3σ).