How many solutions:
A: Two
B. One
3. None

A solution is the same as a root or x intercept. We look where the graph crosses or touches the x axis (horizontal axis). There is only one such place and it is at (2,0) or 2 on the x axis. This is considered a double root, or a root that is repeating, since the degree of any quadratic is 2, but there is only one solution.

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.