Find the missing side length

14

Step-by-step explanation:

Since they are similar triangles, we can use proportions

5              10

=

5+7       10+?

5              10

=

12          10+?

Using cross products

5( 10+?) = 12*10

Divide each side by 5

10+? = 12*10/5

10+? = 24

Subtract 10 from each side

10+?-10 = 24-10

? = 14

51840000 cm 2

step-by-step explanation:

h is the x-coordinate of the vertex

step-by-step explanation:

we have

in this function

the point represent the vertex of the function

so

h is the x-coordinate of the vertex

k is the y-coordinate of the vertex