Answer:
D) 2
Step-by-step explanation:
it think it's D because the size of the triangle was doubled
2 was matched to 4 and
1 was matched to 2
Answer:
Ezra can plant 8 sunflowers
Step-by-step explanation:
0.7S + 0.5L <u><</u> 11
0.7S + 0.5(10) <u><</u> 11
0.7S + 5 <u><</u> 11
0.7S <u><</u> 6
6 ÷ 0.7 = 8.5
Answer:
45
Step-by-step explanation:
The n th term of a GP is
= a
where a is the first term and r the common ratio
Given a₂ = 6 and a₅ = 48, then
ar = 6 → (1)
a
= 48 → (2)
Divide (2) by (1)
= 
, that is
r³ = 8 ( take the cube root of both sides )
r = ![\sqrt[3]{8}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B8%7D)
= 2
Substitute r = 2 into (1)
2a = 6 ( divide both sides by 2 )
a = 3
Thus
3, 6, 12, 24 ← are the first 4 terms
3 + 6 + 12 + 24 = 45 ← sum of first 4 terms
(w,k)
that is amount of women and children lefton original side
ok, first realize you must get children across first because who will row the boat back
first trip: 10min, 2 children across, (3,1)
2nd trip: 20min, 1 kid cross back (3,2)
3rd trip: 30min, 2 kids cross (3,0)
4th trip: 40 min, 1 kid cross baack (3,1)
5th trip: 50 min, 1 woman cross (2,1)
6th trip: 60 min, 1 kid cross back (2,2)
7th trip: 70 min, 1 woman cross (1,2)
8th trip: 80 min, 1 kid cross back (1,1)
9th trip: 90 min, 1 woman cross (0,1)
10th trip: 100min, 1 kid cross back (0,2)
11th trip: 110 min, 2 kids cross back (0,0)
min time is 110 mins or 1hr 50min
