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sergij07 [2.7K]
3 years ago
11

PLEASE HELP ASAP!!!!!!!!! Billy scored a 97 on his final exam in history. If Billy's z-score was 2.6 and the standard deviation

was 5, what was the mean score on the exam?
Mathematics
1 answer:
Tomtit [17]3 years ago
3 0
The mean of the score for your answer is 4.4
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(3x-8)° (4x-23)° fine the x
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3 years ago
A plane traveled from California and back. It took one hour longer on the way out than it did on the way back. The plane's avera
padilas [110]

Answer:

Option D is the correct answer.

Step-by-step explanation:

Let x be the one way distance and t be the time out.

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We have plane's average speed out was 300 mph and average speed on the way back was 350 mph.

That is

           \frac{x}{300}=t\texttt{ and }\frac{x}{350}=t-1

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Time taken for back = t-1 = 7-1 = 6 hours.

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Option D is the correct answer.

5 0
4 years ago
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What is a solution to (x + 6)(x + 2) = 60?
Elden [556K]

Answer:

Ox=4

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3 years ago
In a certain quiz that consists of 10 questions, each question after the first is worth 4 points more than the preceding questio
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