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well, it says that point S is between R and T so RT = RS + ST
60 = 3x - 16 + 4x - 8 the first step is to solve for x, do you think you can take it from here?
hold i'll do it then see if im correct
yup, that's the first step. now that we know what x is, we can now find RS and ST RS = 3x - 16 = ? ST = 4x - 8 = ?
doin it hold on
rs is 24
st is 40
check rs again. st is right
3(12)-16 = ?
lol sorry 20
problem #30 is basically the same thing, do you wanna give it a shot?
i got 7
rs i got 6
st i got 11
@vocaloid when you get a chance
yup those are all correct, ready to move to #31?
i have no idea how to do it
ah, sorry, got distracted there for a sec let's draw the diagram and label it based on what the problem tells us |dw:1440113699458:dw|
AD = 12, so let's mark that right away|dw:1440113728465:dw|
now the problem tells us that AC and CD are equal, so what do you think each of them are?|dw:1440113761200:dw|
righto! let's put that on our diagram|dw:1440113809996:dw|
now, the problem also tells us that AB and BC are equal, so what do you think they are? |dw:1440113840316:dw|
yup, now that we have enough info to keep going
now, it wants us to find the length of every segment in the diagram, so I'll make a list here: AB = 3 BC = 3 CD = 6 AC = 6 CD = 6 BD = 9 AD = 12 so, how many are greater than 3?
so our probability is 5/7
(since there are 7 total segments) and that ends up being our final answer for #31
why are there multiple CD's
oh crap I guess I must have counted it twice, haha... I guess our probability should be 4/6 then
CAn you help with one more then im done i think this one is easy idk
press and hold ctrl and scroll to make it bigger if you need too
well, the abdomen is easy enough, it's 2 and 1/4 of an inch, just reading off the ruler
for the thorax, the right end is at the 4-inch mark, approximately, and the left end is at 2 1/4 inches so (4) - (2 and 1/4) = 1 and 3/4 inch for the thorax
hm? where did you get lost?
so (4) - (2 and 1/4) = 1 and 3/4 inch for the thorax
well, we can measure the abdomen by looking at the ruler, since the abdomen starts at 0 for the thorax, though, it doesn't start at 0 so we need to find both ends and subtract
ooooh okay i get it so 1 and 3/4 for thorax
so its 1/2 inch bigger
okay thanks that's it for the night/day wherever you live :)