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Oliga [24]
3 years ago
6

Please, someone, help I need the answers asap!!

Mathematics
1 answer:
choli [55]3 years ago
8 0

Answer:

#7 : 6

#8 : 12

#9 : ?

#10 : 110

#12 : ?

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When Alice spends the day with the babysitter, there is a 0.6 probability that she turns on the TV and watches a show. Her littl
lara [203]

Answer:

A. P("Both Alice and Betty watch TV") = 12/25

B. P("Betty watches TV") = 12/25

C. P("Only Alice watches TV") = 3/25

Step-by-step explanation:

A. Because what we are told, Betty need that Alice turn on the TV, so, we first need the probability that she watches TV:

P(Alice)=3/5 (0.6)

And we know that:

P(Betty)=4/5 (0.8)

If we want the probability of both things happening at the same time (If you use a tree diagram, those events will be in the same branch), we proceed multiply them:

P("Both Alice and Betty watch TV") = 3/5 * 4/5 = 12/25

And this is the answer

B. Considering that Betty needs Alice to turn on the TV, the probability of Betty watching TV is the same as if she is with Alice.

P("Betty watches TV") = P("Both Alice and Betty watch TV") = 12/25

C. We use the same process as part A, but with a little difference. We now multiply for the probability that Betty does not watch TV (Because they still be in the same branch).

P("Betty does not watch TV") = 1 - P("Betty")

P("Betty does not watch TV") = 1 - 4/5

P("Betty does not watch TV") = 1/5

And the answer for part C is:

P("Alice watches TV without Betty") = 3/5 * 1/5 = 3/25

5 0
3 years ago
if you drove 200 miles at an average speed of 55 miles per hour, how long did it take you to drive 200 miles? pls help
kvv77 [185]

Answer:

3 hours 38 minutes is what calculators online say

Step-by-step explanation:

5 0
2 years ago
I need help question below
elena-14-01-66 [18.8K]

Answer:

15:24 will be your anwser

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What is the approximate square root to 115​
padilas [110]

what is the approximate square root to 115

10.7

Step-by-step explanation:

this is the ans

8 0
2 years ago
Use the similar shape concept of geometry to find the missing value (x). Round your answer to the nearest tenth if necessary.
trapecia [35]

Step-by-step explanation:

7:3

4:x

-cross multiply

7x = 12

x = 12÷7

x = 1.7

7 0
3 years ago
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