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kow
19 days ago
10

The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they studied for th

e exam. What is the best predicted value for y given x = 7? Assume that the variables x and y have a significant correlation.
Hours, x 3 5 2 8 2 4 4 5 6 3
Scores, y 65 80 60 88 66 78 85 90 90 71
Choose one answer.

A. 89
B. 90
C. 91
D. 92
Mathematics
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Which is the solution of the quadratic equation (4y – 3)2 = 72? y = StartFraction 3 + 6 StartRoot 2 EndRoot Over 4 EndFraction a
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Answer:

y = \frac{3 + 6\sqrt{2} }{4} y y = \frac{3 - 6\sqrt{2} }{4}

y = StartFraction 3 + 6 StartRoot 2 EndRoot Over 4 EndFraction y = StartFraction 3 menos 6 StartRoot 2 EndRoot Over 4 EndFraction

Explicación paso a paso:

La ecuación cuadrática que tenemos es (4y - 3)² = 72

Debemos encontrar el valor de y.

Ahora, 4y - 3 = ± 6√2

⇒ 4y = 3 ± 6√2

⇒ y = \frac{3 + 6\sqrt{2} }{4} y y = \frac{3 - 6\sqrt{2} }{4}

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The perimeter of a rectangle is 202. The length is 26 more than 4 times the width. Find the dimensions
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Answer:

P = 2*(26+4y) + 4y

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Thus, we arrive at:

y = \frac{150}{12}= 12.5

And for x, we determine:

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This gives us a length of 76 and a width of 12.5.

Step-by-step explanation:

We are dealing with a rectangle. The formula for the perimeter is:

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Here, x denotes the length and y the width. The following conditions can be established:

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Substituting these values yields:

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When we solve for y, we find:

202= 52 +8y +4y

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By substitution, we obtain:

150 = 12y

Thus, we conclude:

y = \frac{150}{12}= 12.5

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3 months ago
Write the quadratic equation whose roots are six and -2 and who’s leading coefficient is 3 use the letter X to represent the var
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Response:

3X^{2} - 12X - 36 = 0

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Step-by-step explanation:

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