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Zinaida [17]
3 years ago
13

On a cold day, 30 out of 120 students wore a hat to school. Which answer shows both the correct proportion and the correct perce

nt of students who wore a hat? If u answer just for points and don't give a real answer I will report.
Mathematics
1 answer:
zhuklara [117]3 years ago
4 0

I didn't see options to pick from, but possible proportions would be

30/120  or  1/4  or any other fraction equivalent to 1/4

As a decimal, 30/120 = 0.25, which is the same as 25%.

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<h3>Reciprocation</h3>

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The vertex form of a quadratic function is f(x) = a(x - h)2 + k. What is the vertex of each function? Match the function rule wi
bixtya [17]

Answer:

For  f(x)=6(x-5)^2-9   the vertex is: (5, -9)

For  f(x)=9(x+5)^2-6  the vertex is: (-5, -6)

For  f(x)=5(x-6)^2+9  the vertex is: (6, 9)

For  f(x)=6(x+9)^2-5  the vertex is: (-9, -5)

For  f(x)=9(x-5)^2+6  the vertex is: (5, 6)

Step-by-step explanation:

Let's identify the vertex pair (x_v,y_v) from each equation:

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B)  f(x)=9(x+5)^2-6  corresponds to x_v=-5\,\,\,and\,\,\,y_v=-6 , that is: (-5, -6)

C)  f(x)=5(x-6)^2+9  corresponds to x_v=6\,\,\,and\,\,\,y_v=9 , that is: (6, 9)

D)  f(x)=6(x+9)^2-5  corresponds to x_v=-9\,\,\,and\,\,\,y_v=-5 , that is: (-9, -5)

E)  f(x)=9(x-5)^2+6  corresponds to x_v=5\,\,\,and\,\,\,y_v=6 , that is: (5, 6)

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