Thinking it’s going to be c
The standard deviation of the set is 5.2
To find standard deviation, we take the square root of the variance.
(3/5 + -1/4)/(7/10)
get a common denominator of 20
3/5 * 4/4 =12/20
-1/4 * 5/5 = -5/20
7/10 *2/2 = 17/20
replace
(12/20 - 5/20)/(14/20)
add the top
(7/20)/(14/20)
copy dot flip
7/20 * 20/14
7/14
1/2
Answer:
Hello!!
If the ratio of girls to boys in a class is 3:5, the fraction of the class that are girls is...
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Answer:
When you are driving a car, the number of miles that you can drive is directly proportional to the amount of gas you have. left in the tank. For instance, if you only have 2 gallons of gas. left, you can only travel 26 more miles
Step-by-step explanation:
When you are driving a car, the number of miles that you can drive is directly proportional to the amount of gas you have. left in the tank. For instance, if you only have 2 gallons of gas. left, you can only travel 26 more miles