Answer:
x > -24
Step-by-step explanation:
18 - 3x < 90
Subtract 18 from both sides.
-3x < 72
Divide both sides by -3. (When diving by a negative, flip the sign.)
x > -24
Answer:

Step-by-step explanation:
×
← cancel the 27 and 16, 32 by 16
= 
Answer:
4
Step-by-step explanation:
if you divide 2,560 by 640 you get 4.
hope this helps you.
Answer: 0.02
Step-by-step explanation:
Given: Sample size : 
The population proportion 
Then,
The formula to calculate the standard error is given by :-


Hence, the standard deviation of the sample proportions (i.e., the standard error of the proportion) is <u>0.02</u>.