Answer: i) 30 students for chemistry
ii) 21 students for only one subject
iii) 61 students
Step-by-step explanation: from the question we got 30 students registered for chemistry. number students only for biology = (27-18) = 9
number of students only for chemistry = (30-18) = 12
number of student registered for only one subject = (12+9)= 21
number of students registered for neither two subjects = {100-(9+12+18)} = 61
Answer:
800.00
Step-by-step explanation:
10^2
move decimal 2 times
8.00 → 800
Answer:
10 k cal
Step-by-step explanation:
the ecosystem has ecological of 10%
the producer level is 1000 kilo-calories
the primary consumer will contain 10 % of the producer:
10000*10%=1000
the secondary consumer will contain 10% of the primary:
1000*10%=100 k cal
the tertiary will get 10% of the secondary: 100*10%=10 kcal
One specific triangle CAN be made with those angles because of the 180 degree total.
Answer:
(d) a1 = 11
Step-by-step explanation:
Put the numbers in the given formula and solve for a1.
a5 = 176 = a1(r^(5-1)) = a1·r^4
a7 = 704 = a1(r^(7-1)) = a1·r^6
Dividing a7 by a5 gives ...
a7/a5 = (a1·r^6)/(a1·r^4) = r^2 = 704/176 = 4
Then a1 is ...
a1 = a5/(r^4) = 176/(r²)² = 176/(4²) = 11
The first term is 11.