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)
Answer:
£120
Step-by-step explanation:
First calculate 25% of £160 then subtract this from the £160.
25% of 160 = 25/100 * 160
= 1/4 * 160 = £40.
£160 - £40 = £120 (answer).
1cc is 1ml, or .001 liters.
1cc of water also has a mass of 1g
Pick highest exponent of placeholder
that is the degree
x^2 and y^5
2<5
5>2
5th degree
Answer:
b
Step-by-step explanation:
i think it is b the answer is b