Which of the following transformations affect the x-values of a function? (Check all that apply)
Horizontal dilations
Vertical dilations
Shifts left or right
Shifts up or down
Reflection across the x-axis
Reflection across the y-axis

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

answer: both chords and diameters have two endpoints on a circle. diameters must intersect the center of a circle.