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yKpoI14uk [10]
3 years ago
7

According to a study, 91% of all adults have a cell phone. An employee of a cell phone company attends a community event and has

a special offer to give to first time cell phone owners. If she randomly selects adults in attendance at the event and cell phone ownership is independent from adult to adult, what is the probability that she asks 21 adults total to find the first one that does not own a cell phone?
Mathematics
1 answer:
umka2103 [35]3 years ago
6 0

Answer:

(0.91)^{20}(0.09)

Step-by-step explanation:

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Kaylah's family has completed 70% of a trip. They have traveled 35 miles. How far is the trip?
Lady_Fox [76]

Answer:

b) 50

Step-by-step explanation:

you can multiply all of the answers by .7 (70% converted into a decimal) to see which one matches 35 miles.

24.5(.7) = 17.15 INCORRECT

50(.7) = 35 CORRECT

59.5(.7) = 41.65 INCORRECT

200(.7) = 140 INCORRECT

8 0
2 years ago
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What is the value of the expression below?<br> (7^1/2)^2
fredd [130]

Answer:

7

Step-by-step explanation:

We can multiply the exponents so (7¹⁺²)² = 7⁽¹⁺² * ²⁾ = 7¹ = 7.

4 0
3 years ago
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6.1/5(12b+5) for b = 5/6​
Temka [501]

Answer:

Step-by-step explanation:

6.1 / 5 ( 12b + 5 )

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by substituting,

6.1 / 5 ( 12 × 5/6 + 5 )

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= <u><em>18.3</em></u>

Hope this helps

plz mark as brainliest!!!!!!!

Stay safe!!

7 0
3 years ago
124150.5225 is the square of what number
mestny [16]
I guess it can be 2. If you're not looking for any zeros then the probable answer can most likely be 2
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A train travels 250 miles at a constant speed (x), in miles per hour.
Sedaia [141]
250 = 5 x is the equation you can use
4 0
3 years ago
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