<em>Hi there!</em>
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<em>Answer : </em>
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<em>Hope this helped you!</em>
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Step-by-step explanation:
the solution is in the picture
f = amount of fliers expected to be mailed in 1 day.
a)
so, she has 5 days to mail those fliers, so
day 1........... 1f mailed out
day 2........... 2f mailed out
day 3........... 3f mailed out
day 4........... 4f mailed out
day 5........... 5f mailed out
so she'll be mailing out a total of 5f fliers, we know whatever "f" is, that total must be at least 850, now, it could be more, no less, could also be 850 exactly, but could also be more, 5f ⩾ 850.
b)

That line means the other side is also x
remember pythagoran theorem
for legs length a and b and hypootnuse length c
a²+b²=c²
so
legs aer x and x
hyptonuse is 6
x²+x²=6²
2x²=36
divide both sides by 2
x²=18
sqrt both sides
x=(√9)(√2)
x=3√2