Ajar contains four black buttons and five brown buttons. if five buttons are picked at random, what is the probability that at least three of them are black?

where is the figure

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:

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

-1   1/6.   you dont subtract the denominators

step-by-step explanation:

i would say true? if the unit was informational and it "refreshed your understanding", then true.