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Anna [14]
3 years ago
12

The grades on a language midterm at Santa Rita are roughly symmetric with u = 70 and o = 5.5

Mathematics
1 answer:
LuckyWell [14K]3 years ago
8 0

Answer:

0.36

Step-by-step explanation:

Given that:

Mean = 70

Standard deviation = 5.5

score (x) = 72

Formular for obtaining Standardized score (Zscore) :

Zscore = [score (x) - mean] / standard deviation

Hence,

Zscore = (72 - 70) / 5.5

Zscore = 2/ 5.5

= 0.3636363

Zscore = 0.36 ( 2 decimal place)

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Step-by-step explanation:

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Write a rule for the following functions. I need help fast!
marishachu [46]

Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

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7 0
3 years ago
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WILL MARK BRAINLIEST FOR THE BEST ANSWER. PLEASE SHOW FULL SOLUTIONS. THANK YOU AND GOD BLESS. THE QUESTION IS ATTACHED. :)
Anuta_ua [19.1K]

9514 1404 393

Answer:

  (x, y) = (34/5, -4/5) = (6.8, -0.8)

Step-by-step explanation:

Subtract the first equation from the second to eliminate x.

  \left(\dfrac{x}{3}-\dfrac{y}{2}\right)-\left(\dfrac{x-5}{3}+\dfrac{y+2}{3}\right)=\left(\dfrac{8}{3}\right)-(1)\\\\y\left(-\dfrac{1}{2}-\dfrac{1}{3}\right)+\left(\dfrac{5}{3}-\dfrac{2}{3}\right)=\dfrac{5}{3} \qquad\text{partially simplify}\\\\-\dfrac{5}{6}y=\dfrac{2}{3} \qquad\text{subtract 1}\\\\y=-\dfrac{4}{5} \qquad\text{multiply by $-\dfrac{6}{5}$}

Substituting for y in the second equation, we can find x.

  \dfrac{x}{3}-\dfrac{1}{2}\left(-\dfrac{4}{5}\right)=\dfrac{8}{3}\\\\5x +6=40 \qquad\text{multiply by 15}\\\\5x=34\qquad\text{subtract 6}\\\\x=\dfrac{34}{5}

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