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Vsevolod [243]
3 years ago
11

A multiple choice test consists of eight questions, each of which has five choices. Each question has exactly one correct answer

.
William guesses randomly at each answer. What is the probability that he gets six or fewer questions correct?
Mathematics
2 answers:
Nesterboy [21]3 years ago
7 0
I dont under standyou
Fed [463]3 years ago
5 0
William has clearly not studied. 

There are five choices for eight questions. The probability of getting a question right is 1 in 5 or 20%. The probability of getting all of them right is 0.00000256. The probability of him 6 or fewer questions correct is over 99% likely. 
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Y + (-3 y2 ) +2( y2 - 6y) simplify​
labwork [276]

Answer:

y - 3y^2 + 4y^2 - 12y

y^2 - 11y

Step-by-step explanation:

3 0
2 years ago
Please check and edit for me! It's not super long ;)
IceJOKER [234]

Answer:

edited:

    She exhaled deeply, eyeing the brown clock vigilantly. One more hour of utter boredom and suffering. Her afterschool activity had been canceled last minute, meaning she had to wait to be picked up with nothing to do till it would have ended. She sat on a dirty and peeling maroon bench in the schoolyard, her back to the worn soccer pitch.  Figuring she might as well find some way to pass the time before finally going home, she began to doodle in her orange and blue notebook.

Step-by-step explanation:

1. yes, they work together to set the scene by providing details to where she is and why. the sentences describe her emotions without making the paragraph boring.

2. for the most part, the reasoning for her being there afterschool could have been mentioned first but the way it is currently written makes sense regardless.

3. the writer could have included transitions to better connect the sentences. but overall, it is well written.

5 0
3 years ago
26 ptss!! select the expressions that are equivalent to the expression below.
valkas [14]

Answer:

1st, 2nd, and last.

Step-by-step explanation:

For the first two common rules can be applied such as n\sqrt{a/b} = \frac{\sqrt[n]{a} }{\sqrt[n]{b} } and that \sqrt[n]{\frac{a}{b} } = (\frac{a}{b})^{n}

and for the last one this is just simplifying the radical and if you factor it you realize that, \frac{750}{512} = \frac{5^3}{8^3}*6 meaning that you can take the radical off of 5/8 and end up with that final answer

7 0
3 years ago
Estimate the product 48 x 32. Round each factor to the nearest ten.
nexus9112 [7]

Answer:

1500

Step-by-step explanation:

48-50

32-30

50 times 30 = 1500

3 0
2 years ago
What is the answer to this question ?
NNADVOKAT [17]
I think its d but im not sure
3 0
2 years ago
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