Answer:
9
Step-by-step explanation:
Hope this helps and have a great day : )
Answer:
red +blue marbles :- 15 +13=28 marbles.
yellow marbles:- 50+28=22 marbles.
probability of yellow marble :- 22/50 i.e 11/25
1,1,2,3,5,8, ______, ______, _______, _________, _______.
jasenka [17]
12 20 32 52 84 hope I helped
Answer:
c)21
Step-by-step explanation:
"To light a park, luminaries are placed along a length of 100 meters, if the first is placed in meter 1, the next in meter 4, the next in meter 7, and so on. in the following positions a luminary will be placed except in the subway:
a)13 b)19 c) 21 d)28? "
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Luminaries position:
It makes an AP with the first term of 1 and common difference of 3
The formula for this AP is:
- aₙ = 1 + 3(n-1) = 1 + 3n - 3 = 3n - 2
From the given options, only one is not in the same format:
because
- 21 = 3n - 2 ⇒ 3n = 23 and n= 23/3 is not an integer
Answer is: c) 13
