The following Venn Diagram shows the results of a teacher survey. A teacher asked her class which students owned android phones,
which owns iPhones, and which had service with AT&T. What is the probability of randomly selecting a student from the class that owns an Android Phone OR had service with AT&T.
Group of answer choices
iphone-5
AT&T-2
Android- 6
IPhone and AT&T-6
AT&T and Android- 6
none- 7
0.60
0.73
0.78
0.46
Group of answer choices
iphone-5
AT&T-2
Android- 6
IPhone and AT&T-6
AT&T and Android- 6
none- 7
0.60
0.73
0.78
0.46
2 answers:
Answer:
<h3>There's a probability of 0.60 to select a student that owns an Android Phone or has service with AT&T.</h3>Step-by-step explanation:
The image attached shows the Venn Diagram.
From the diagram, 12 students use AT&T service and 6 students use an Android phone only. The total number of students is 30.
The probability to pick a student with Android is
The probability to pick a studen with AT&T is
Remeber, the probability of one event OR another implies the sum of probabilities.
Therefore, there's a probability of 0.60 to select a student that owns an Android Phone or has service with AT&T.
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Answer:
Step-by-step explanation:
given that tonya charges 20$ monthly fee and 3$ per mile of her dog-walking service.
and beth does not charge any monthly fee but charges 5$ per mile of the dog walked in.
let x be the number of miles dog has walked in a month.
the amount tonya will charge on x miles = fixed monthly fee + number of miles * charge per mile = 20+3x
and the amount beth will charge on x miles = 0+ 5*x = 5x.
we are asked to find the x-value for which beth chargeable amount = tonya chargeable amount
that is 5x = 20+3x
5x-2x = 20
2x=20
x=
hence number of miles for which tonya and beth will charge the same amount is 10.
Answer:
25%
Step-by-step explanation:
George is 33% (
%) richer than Pete. Let Pete's percentage of wealth be 100%.
Thus George percentage of wealth = 100% + %
= %
= 133%
Pete's percent poorer than George can be determined by;
= ÷
× 100
= ×
×100
= 0.25 × 100
= 25%
Pete is 25% poorer than George.
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Dimensional analysis, in simpler terms, is just the process of expressing an answer in another unit by multiplying conversion factors.
For this problem, we'll need to perform the following:
Notice that we used the conversion factor 1000 meters = 1 kilometer to convert the units from atm/m to atm/km. Thus, we arrive at the final answer 992 atm/km.
Dimensional analysis, in simpler terms, is just the process of expressing an answer in another unit by multiplying conversion factors.
For this problem, we'll need to perform the following:
Notice that we used the conversion factor 1000 meters = 1 kilometer to convert the units from atm/m to atm/km. Thus, we arrive at the final answer 992 atm/km.