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inessss [21]
3 years ago
7

Andrew's fish tank measures

Mathematics
1 answer:
Deffense [45]3 years ago
7 0

15 volume of the fish tank

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» What is the combined length of all the buttons longer than 1 inch​
GrogVix [38]

Answer:

how many buttons there are

Step-by-step explanation:

yo have to have a certain number of buttons

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2 years ago
5/8 of students choose blue, 5/9 of students choose green, 48 students chose red. how many students chose green and blue?
ss7ja [257]
I don’t know that is so complicated
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In a study of wait times at an amusement park, the most popular roller coaster has a mean wait time of 17.4 minutes with a stand
Ann [662]

Answer: A: 0.0031

Step-by-step explanation:

Given : In a study of wait times at an amusement park, the most popular roller coaster has a mean wait time of 17.4 minutes with a standard deviation of 5.2 minutes.

i.e. \mu=17.4 and \sigma=5.2

We assume that the wait times are normally distributed.

samples size : n= 30

Let x denotes the sample mean wait time.

Then, the probability that the mean wait time is greater than 20 minutes will be :

P(x>20)=1-P(x\leq20)\\\\=1-P(\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}\leq\dfrac{20-17.4}{\dfrac{5.2}{\sqrt{30}}})\\\\=1-P(z\leq2.74)\ \ [\because\ z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}]\\\\=1-0.9969\ \ [\text{ By z table}]\\\\=0.0031

Hence, the probability that the mean wait time is greater than 20 minutes.= 0.0031

Thus , the correct answer is A: 0.0031 .

5 0
3 years ago
What is the measure of Angle A B C ? 36° 43° 72° 144°
Gemiola [76]

Step-by-step explanation:

the correct answer is C because the measurementor an angle cannot be under 72 :)

4 0
2 years ago
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Find the volume of a cylinder with a radius of 3 cm and a height of 7 cm.
dedylja [7]
The answer is 197.92 cubic cm
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3 years ago
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