someone please help me ASAP, I've been here for hours no one is telling me the answer and to be honest I'm about to die Is due in a minute

ok so 120+160+200+192= 672

Step-by-step explanation:

672cm^2

Step-by-step explanation:

First we must find the areas of the individual pieces

Right triangle:

1/2bh = 1/2(12)(16) = 96cm2

Since there are two right triangles, together they will equal 192cm2

Bottom rectangle:

A=lw=12 x 10 = 120cm2

Side rectangle:

A=lw=(10)(16)=160cm2

Slanted rectangle:

A=lw= (10)(20)=200cm2

Last, you add all the areas up:

192+120+160+200=672cm^2

answer: answer

step-by-step explanation:

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.