Answer:
Blue
Step-by-step explanation:
I used a graphing calculator called Desmos.
Answer:
9
Step-by-step explanation:
because 4+ 5 is= 9
Answer:
20ft^2
Step-by-step explanation:
The length is currently three feet, if you add two feet to three that makes five feet. Five times four is twenty.
I hope this helps!
Answer:

Step-by-step explanation:
-The margin of error is calculated using the formula:

-We substitute the values, n=900 and ME=30 in the formula to solve for standard deviation:

Hence, the population standard deviation is 547.1125