answer:
N(t)=2×
17
15
step by step explain:
before lesson (t=0), she knows 2 words.
after a week (t=1), she knows
2×(1+70%)=3.4 words
after one more week (t=2), she knows
3.4×(1+70%)=5.78 words
one more week later (t=3), she knows
5.78×(1+70%)=9.826 words
and so on ...
from pattern shown above, we know that she knows
2× words after t weeks
so N(t)=2×
after 4 weeks (t=4), she knows 2×=16.7042≈17 words
for learning 5000 words, she need:
2×=5000
=2500
t log(1.7)=log(2500)
t=
=14.7448727
≈15 (round up)
She practices for 40 minutes on Monday.
On Tuesday she practices for 5/8 of 40 minutes.
On Tuesday she practices for 25 minutes.
On Wednesday she practices for 4/5 of 25 minutes.
Hannah practices for
A. 20 minutes on Wednesday.
I think it would be A because that side looks double the size. Hope this helps!
Answer: 2=-2 false statements
Good luck!