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Ulleksa [173]
3 years ago
9

I need help with 1-19!! Please help me!!!

Mathematics
1 answer:
pentagon [3]3 years ago
6 0

Answer:

I need help with1-9!! please help me!!

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Step-by-step explanation:

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There are 28 students in a class. 13 of the students are boys. Two students from the class are chosen at random. a) If the first
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3 0
2 years ago
4 (a+3)=36 show all steps
PtichkaEL [24]
4(a+3)=36
Delete the parentheses, multiplying with the number of outside, making the set of signals
4a + 12 = 36

Number with incognito are to the left of the equality and numbers without incognito are to the right, remembering that when changing of side changes the signal.

4a = 36 - 12
4a = 24
a =  \frac{24}{4}
\boxed{a = 6}

Confirm that the solution is correct:
4(a+3)=36
4(6+3)=36
4(9)=36
36=36 (TRUE)

Answer:
\boxed{a = 6}

5 0
3 years ago
Niko needs to be at school at 7:45am. it takes her 15 minutes to walk to school.
serious [3.7K]
She would need to leave at 7:30am to make it on time 

8 0
4 years ago
HELP PLEASE!!!!!
Agata [3.3K]
The number of trials = 10
Probability of success (getting a 3) is p = 1/6
Probability of failure (not getting a 3) is q = 1 - 1/6 = 5/6

The probability of one success after 10 trials is given by the binomial distribution as
₁₀C₁ p¹ q⁽¹⁰⁻¹⁾ = 10*(1/6)*(5/6)⁹ = 0.323

Answer: 0.323
5 0
3 years ago
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