X= -2 + the root of 5
OR
x= -2 - the root of 5
Answer:
A) 34.13%
B) 15.87%
C) 95.44%
D) 97.72%
E) 49.87%
F) 0.13%
Step-by-step explanation:
To find the percent of scores that are between 90 and 100, we need to standardize 90 and 100 using the following equation:
Where m is the mean and s is the standard deviation. Then, 90 and 100 are equal to:
So, the percent of scores that are between 90 and 100 can be calculated using the normal standard table as:
P( 90 < x < 100) = P(-1 < z < 0) = P(z < 0) - P(z < -1)
= 0.5 - 0.1587 = 0.3413
It means that the PERCENT of scores that are between 90 and 100 is 34.13%
At the same way, we can calculated the percentages of B, C, D, E and F as:
B) Over 110
C) Between 80 and 120
D) less than 80
E) Between 70 and 100
F) More than 130
150 divided by 25 is 6
Each person receives $6
There is a total of 48 games among the three friends.
Answer:
himself: grandmother: neighbor: total
3 3 6 12
Step-by-step explanation:
himself: grandmother: neighbor: total
1 1 2 4
The total lbs is 12
12/4 = 3
Multiply each by 3
himself: grandmother: neighbor: total
1*3 1*3 2*3 4*3
3 3 6 12