Please answer this correctly

320

Step-by-step explanation:

so finding 80% of 400

move the decimal in 80% over twice to become a whole number

multiply 400 times 80=32,000

move the decimal back twice

which would be 320'

pls mark me brainliest

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.