Answer:
30.9
Step-by-step explanation:
8 + 10 + 8.9 + 4 = 30.9
Answer: length = 75 cm
Step-by-step explanation:
61 x 2 = 122
272-122= 150
150 divided by 2 = 75
check: 75+61= 136
136 x 2 = 272
hope this helps!
Answer:
Step-by-step explanation:
4 and 6 have a common factor 2.
and 
have a common factor 
.
So we can factor out 
:
Answer:
<u>200 additional gallons of water are used when 40 people take a bath instead of a shower</u>
Step-by-step explanation:
1. Let's review the information given to us to answer the question correctly:
Amount of water used when we take a bath = 20 gallons
Amount of water used when we take a shower = 15 gallons
Number of people who wants to take a bath = 40
2. How much extra water is used?
Extra water is used = Number of people * (Amount of water used when we take a bath - Amount of water used when we take a shower)
Replacing with the real values, we have:
Extra water is used = 40 * (20 - 15)
Extra water is used = 40 * 5 = 200 gallons
Answer: 1537.
Step-by-step explanation:
Formula for sample size :-
Given : 
Margin of error : E= 100
Critical value of 95% confidence : 
Now, the required sample size will be :-
Hence, the minimum sample size required = 1537.
