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Mandarinka [93]
2 years ago
7

On the first day of a family road trip, Kai's family travels 365 miles.

Mathematics
1 answer:
liraira [26]2 years ago
7 0

Answer:

The answer to that is 438 miles.

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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).

7 0
3 years ago
Rewrite the expression as an algebraic expression in x. <br> cos(tan−1 x)
zhenek [66]
It's hard to type and hard to read the "inverse tangent" function, as you've seen (above).

So, use "arctan x" instead.

Then the problem becomes:  "differentiate cos (arctan x)."

You must apply first the rule for differentiating the cosine function, and next apply the rule for differentiating the arctan function:

(d/dx) cos (arctan x) = - sin (arctan x) * [1/(1+x^2)]

7 0
3 years ago
A bakery has 42 donuts and 24 muffins for sale. What is the ratio of muffins to donuts
Lana71 [14]
The ration is 12 muffins to every 21 donuts
6 0
3 years ago
Read 2 more answers
True or false: A triangle can be made by segments that are 15.9 cm, 10 cm and 25.9 cm.
Gala2k [10]

Answer:

false

Step-by-step explanation:25.9cm is too big to connect to 15.9cm and 10 cm

4 0
1 year ago
A turtle can swim 20 meters in 4 seconds. At this rate, how many meters can the turtle swim in 10 minutes?
Snezhnost [94]

Answer:

3,000 meters

Step-by-step explanation:

10*60=600/4=150*20=3000 meters (I highly doubt a turtle can swim three kilometers in 10 min... especially if it's a box turtle).

7 0
3 years ago
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