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Alexxandr [17]
3 years ago
15

Find the product.

Mathematics
2 answers:
Komok [63]3 years ago
6 0
Always when multiplying a positive number by a negative number, the answer is negative. So C and D Are out. 
You calculate and Get -84

So, the Answer is A (-84)

Hope this Helps :)
Tcecarenko [31]3 years ago
6 0
7 × 12 = 84, add a negative sign at twelve and you'll get -84 and A is correct
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Which function has a vertex on the y-axis? f(x) = (x – 2)2 f(x) = x(x 2) f(x) = (x – 2)(x 2) f(x) = (x 1)(x – 2)
makvit [3.9K]

The function that has a vertex on the y-axis is f(x) = (x - 2)(x + 2)

<h3>How to determine the function?</h3>

For a function to have its vertex on the y-axis, then the coordinate of the vertex must be:

(h,k) = (0,y)

A quadratic function is represented as:

f(x) = (x - h)^2 + k

So, we have:

f(x) = (x - 0)^2 + k

Evaluate

f(x) = x^2 + k

From the list of options, we have:

f(x) = (x - 2)(x + 2)

Expand

f(x) = x^2 - 4

Hence, the function that has a vertex on the y-axis is f(x) = (x - 2)(x + 2)

Read more about vertex at:

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