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UkoKoshka [18]
2 years ago
13

On a quiz, tina scored 4 points more than julia and earned 2 points in extra credic. Enter an expression that represent tina's s

core and julia's score. Yse variable y to repersent julia's score
Mathematics
1 answer:
andre [41]2 years ago
7 0

Julia’s score is <em>y</em> and Tina’s score is <em>y</em> + 6.

Step-by-step explanation:

Let us take Julia’s score be <em>y</em>.

First Tina scored 4 points more than Julia, so the expression is <em>y</em> + 4.

Then, Tina earned 2 points as extra credic, now the expression becomes

(y + 4) + 2 = y + 6.

Hence Julia’s score is <em>y </em>and Tina’s score is <em>y</em> + 6.

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Answer:

C.

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Answer:

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Step-by-step explanation:

We are given the following in the question:

Mean, μ = 13.5 years

Standard deviation,σ = 2.8 years

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If large random samples are drawn from population with mean \mu and standard deviation \sigma, then the distribution of sample mean will be normally distributed with mean \mu and standard deviation \frac{\sigma}{\sqrt{n}}

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