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3 years ago

Four coins are tossed. find the probability of tossing exactly three tails.

1 answer:

5 0

1/2 x1/2 x1/2 x1/2 = 1/16
Because it would be the probability of a tail times the probability of another tail times the probability of another tail times the probability of a not tail so a head.

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What is 7 1/2 - 4 1/4

GarryVolchara [31]

The answer is 3.25 or 3 1/4

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3 years ago

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The table shows the number of minutes Garrett practiced his trombone each week in one month. Week Number of Minutes Practiced 1

vredina [299]

Answer:

$\bar X= \frac{\sum_{i=1}^n X_i}{n}$

The reason is because we assume that each week have the same weight and replacing we got:

$\bar X= \frac{190+163+327+205}{4}= 221.25$

And the best option would be:

D. 221.25

Step-by-step explanation:

For this case we have the following data given

Week 1 2 3 4

Minutes 190 163 327 205

For this case we can find the mean with the following formula:

$\bar X= \frac{\sum_{i=1}^n X_i}{n}$

The reason is because we assume that each week have the same weight and replacing we got:

$\bar X= \frac{190+163+327+205}{4}= 221.25$

And the best option would be:

D. 221.25

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3 years ago

Santino traveled 168 miles in 2.5 hours to visit the Kalahari Water Park. What is the unit rate, in miles per hour, that Santino

Nata [24]

Answer:

67.2mph

Step-by-step explanation: you do 168 divide by 2.5

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3 years ago

2(y+4)−8=24<br> what is y?

Law Incorporation [45]

I got the answer of 12

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3 years ago

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Mariana wears her winter coat when the temperature is colder than -4^{\circ}\text{C}−4 ∘ Cminus, 4, degrees, start text, C, end

Savatey [412]

Answer:

T < - 4°C

Step-by-step explanation:

Given that Mariana wears her coat only when temperature is colder than - 4°C

Recall that lower temperature values indicate higher degree of coldness ;

Hence, Mariana will only wear her coat when temperature values are lesser than - 4°C ; this means that the temperature at that period is colder than - 4°C.

Hence, the inequality expression which is only true for temperatures when Mariana wears her coat can be written as :

Temperature = T

T < - 4°C

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3 years ago

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