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OpenStudy (anonymous):
If D varies directly with t and D is 105 when t is 3, find D when t is 8. 35 280 840
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OpenStudy (solomonzelman):
lets write the first equation we know that D= 105 and t=3. so d=35t (since it is 35 times grater than 't'.) find D when t=8 plug in 8 for 't' into the 'd=35t', ⇒ D=35(8) ⇒ D= 280
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