Question and answer choices are attached. Please pick the right answer and explain/show work if possible. Thanks!

Choice c.

Step-by-step explanation:

Vectors

Suppose we have a vector v defined as

The magnitude of the vector is:

On the other hand, the dot product of the vector by itself is:

Note the relation between these two operations is:

Since we are given:

, then:

Choice c)

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.