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Alexxandr [17]
3 years ago
6

The length of time a particular smartphone's battery lasts follows an exponential distribution with a mean of ten months. A samp

le of 64 of these smartphones is taken. Find the probability that the sample mean is between seven and 11.
Mathematics
1 answer:
aev [14]3 years ago
8 0

Answer:

Probability between 7 and 11 is 0.7799

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Find the area of a triangle that has a base of 16 inches and a height of 5 inches.
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Max was on vacation twice as long as Jerrad and half as long as Wesley. The boys were on vacation a total three weeks. How long
mote1985 [20]
3 weeks = 21 days
Let Jerrad's vacation be X then Max's be 2X and Wesley's 4X
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2 years ago
Triangle ELM is rotated - 90 degrees about the origin. Draw the image of this rotation.
Fiesta28 [93]

Answer:

△E'L'M'

Step-by-step explanation:

-90° rotation = 270° rotation

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5 0
3 years ago
Read 2 more answers
One large bubble separates into four small bubbles so that the total area of the small bubbles is equal to the area of the large
sergey [27]

Answer:

R = 10 cm

Step-by-step explanation:

The area of a spherical shape is given by :

A=4\pi r^2

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ATQ,

One large bubble separates into four small bubbles so that the total area of the small bubbles is equal to the area of the large bubble.

The radius of each small bubble is 5 cm

Using the given condition,

4\pi R^2=4\times (4\pi r^2)\\\\R^2=4r^2\\\\R=\sqrt{4r^2} \\\\R=2r\\\\R=2\times 5\\\\R=10\ cm

So, the radius of the large bubble is equal to 10 cm.

5 0
3 years ago
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