You have to type up a 400 word paper. If you can type 25
words in 3 minutes, how long will it take you to type the
paper?
the correct option is 2.
step-by-step explanation:
according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.
it is given that triangles abd, cad, and cba are similar.
two triangles are similar if their corresponding sides are proportional.
in triangle cba, using pythagoras theorem
)
triangle abd and cba are similar,
(2)
triangle cad and cba are similar,
)
using (1), (2) and (3), we get
hence proved.
therefore option 2 is correct.
answer: first option i.e. 'a' is correct.
step-by-step explanation:
since we have given that
number of minutes to wrap a small gift box = 4 minutes
we need to find the number of gifts to be wrapped in 5 minutes
since there is a direct variation, as the number of minutes will increase with number of gifts to be wrapped.
so, let the number of gifts to be wrapped in 5 minutes be x.
so, it becomes,
hence, first option 'a' is correct.