I would help but what are you answer choices?
Answer:
So 55% of an unknown number is 1452
Let this unknown number be n
Then 55% of n = 1452
We now solve for n
55% × n = 1452
55/100 × n = 1452
0.55 × n = 1452
n = 1452/0.55
n = 2640
Therefore there are 2640 students in the college
Answer:
7 minutes
Step-by-step explanation:
The scientist changes the temperature for the solution at a rate of -7°C per minute. We need to find out how long it'll take for the solution's temperature to change from 0°C to -49°C. So, we divide -7 by -49 to find out how long it will take:
-49 / -7 = 7
It will take 7 minutes for the temperature to reach -49°C.
-2/3 is a rational number
0.1111.... =1/9 - rational number
-2/3*1/5= -2/15 rational
1/9*1/5=1/45 rational
correct answer A and D
π and √11 are irrational numbers, and when they are multiplied by rational number, they will give irrational number.
