Adriana, henry, malik, and richard each design surveys to determine the most popular way seventh graders purchase music. adriana samples the five friends sitting at her lunch table. henry samples every boy in his homeroom class. malik samples every student using an mp3 player while waiting for the bus. richard samples the first student alphabetically on the class roster from each of 12 classes. which sample is likely to produce the most valid results? adriana’s sample henry’s sample malik’s sample richard’s sample

i think the answer is b.

step-by-step explanation:

not 100% sure though.

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

hi there!

first we need to find out how much they are adding to each number to make the next number.

ex: 4 + 4 = 8, 8 + 8 = 16, and so on.

so continuing with 32,

32 + 32 = 64

64 + 64 = 128

128 + 128 = 256

256 + 256 = 512

4, 8, 16, 32, 64, 128, 256, 512

the 8th term of the sequence will be 512

hope this ! ~

the real question is why is this guys last name heavyfoot

step-by-step explanation: