How do you do these?

Mathematics

1 answer:

fiasKO [112]3 years ago

4 0

I'll do #6.

The axis of symmetry is the x-coordinate of the vertex, which in this case, is (0,-4). So the axis of symmetry is x=0.

The vertex is in the above answer. Since this is a quadratic function, there are no boundaries, the domain is All Real Numbers.

The range goes up forever from the vertex. The vertex is (0,-4), so, the minimum y value is -4. The range is y is greater than or equal to -4, or in interval notation: [-4,infinity]

Hope this helps!

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After reading a book foe English class, 100 students were asked whether or not they enjoyed it. Nine twenty-fifths of the class

Katena32 [7]

Answer:

The number of students who liked the book was 64.

Step-by-step explanation:

After reading a book for English class, 100 students were asked whether or not they enjoyed it.

Now, given that nine twenty-fifths of the class did not like the book.

So, $\frac{9}{25}$ of the whole class did not like the book.