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Alex Ar [27]
3 years ago
5

Sarah rolls a die twice. What is the probability that she rolls a 3 and then an even number?

Mathematics
1 answer:
egoroff_w [7]3 years ago
7 0
1/12

This is because she has a 1/6 chance of getting a 3 on the first try and then a 1/2 chance of getting an even on the second. Multiply these two together to get your answer. 
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5x + 9 = 5 + 3x : solve
earnstyle [38]

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5x - 9 = 5 - 3x

5x - 3x = 5 - 9

2x = -4

X = \frac{-4}{2} = -2

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Hope this helped you.

Could you maybe give brainliest..?

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5 0
3 years ago
Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that
timama [110]

Answer:

Step-by-step explanation:

Given that evolution theory hypothesizes that people should spontaneously follow a​ 24-hour cycle of sleeping and wakingdash–even if they are not exposed to the usual pattern of sunlight.

Sample size n = 8

df = 8- 1=7

Since population std deviation is not known, and sample size is small we can use only t test

H-0: x bar = 24\\H_a: x bar \neq 24

(two tailed test at 5% level of significance)

24

28

24

22

25

26

26

25

 

mean 25

 

sd 3.142857143

 

se 1.111167799

Test statistic = Mean diff/se = 1.595

p = 0.1546

since p >0.05, accept null hypothesis.

There is no evidence to prove that the steady cycle is different from 24 hours.

4 0
3 years ago
Simplify this expression 5a/11a
barxatty [35]
You could cross cancel the a and your final answer would be 5/11
6 0
3 years ago
Read 2 more answers
HELP ASAP!!!!! PLEASE
german

Answer: imma say A

Step-by-step explanation: sorry if wrong

8 0
2 years ago
What is 5/6 - blank equal 1/2
mel-nik [20]

Answer:

1/3

Step-by-step explanation:

5/6-x=1/2

x=5/6-1/2

x=5/6-3/6

x=2/6

simplify

x=1/3

8 0
3 years ago
Read 2 more answers
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