Lilyy1k

01.01.2021 • 

Mathematics

Jemima being a plant lover decides to open a nursery She bought few She wants to place pots in such a way that number of pots in row is 5 and in the third row is 7 and so on ... i) The number of pots in the 9th row is a) 16 b) 32 c)19 d)27 ii) Sum of the pots in the first 5 rows is b) 35 a) 14 c)12 d)45 iii) nh term of the sequence is... a) 3n -2 b) 2n +1 c) 5n + 1 d) 2n 5 iv) In which row will there be 15 pots ? a) 6 b) 7 c) 13 d)15 v) sum of 'n' terms of the sequence is : a) n -n b) n² +2 c) n² +2n d) n-2n 19 Due to a heavy storm an electric wire got bent as shown in the figure. It followed a mathematical shape. Based on this situation answer the questions below:-

Ответ:

blackbetty79

01.11.2022

Mathematics

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Male Fish = 20

Female Fish = 16

Step-by-step explanation:

Let number of male fish be x and number of female fish be y

There are 36 fishes in total, so we can write:

x + y = 36

or

x = 36 - y

Also, male fish (x) cost 5 each and female fish (y) cost 7 each totalling $212, so we can write:

5x + 7y = 212

Now, we can put 1st equation in 2nd equation and get an equation in "y" and solve for y first:

We know x = 36 - y, so

x = 36 - 16

x = 20

Thus,

there are

20 Male fishes & 16 female fishes in the aquarium

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