Answer:
9
Step-by-step explanation:
Answer: 1) is 20
2) is 75 minutes
3) is estimated 63
Step-by-step explanation:
1) 200×90=18000÷100=180 and 200-180=20
2) 45÷12=3.75 which is the unit rate of minutes per question and 3.75×20=75 minutes
3) to long to explain and I don't know number 4
Answer: 0.14
Step-by-step explanation:
5 / (25+5+5)
Quadratic
y = ax^2 + bx + d
c (x) = ax^2 + bx + d
c (3) = a (3^2) + b (3) + d
c (3) = 9a + 3b + d = 15.50
c (7) = a (7^2 + b (7) + d
c (7) = 49a + 7b + d = 23.50
c (12) = a (12^2) + b (12) + d
c (12) = 144a + 12b + d = 56
solve using simultaneous equations... to get a b and d
use that to solve for x = 5
hope this helps?
Answer:
5/6 is your answer
Step-by-step explanation:
no. of favourable observation/ total no of observation