9514 1404 393
Answer:
68%
Step-by-step explanation:
According to the empirical rule, 68% of the distribution lies within 1 standard deviation of the mean.
Here, the mean is 20 and the standard deviation is 5. The bounds on 1 standard deviation from the mean are 20±5 = [15, 25]. This is precisely the interval of interest.
68% of students wait between 15 and 25 minutes
Answer:
$63
Step-by-step explanation:
- Penny = $0,01
- Nickel = $0.05
- Dime = $0.1
- Quarter= $0.25
- Number of pennies = 6*50 = 300
- Number of nickels = 5*40= 200
- Number of dimes = 4*50= 200
- Number of quarters = 3*40 = 120
<u>Total amount of money:</u>
- 300*0.01+ 200*0.05 + 200*0.1 + 120*0.25 = $63
I run 1 mile every 6 minutes.
My friend runs 1 mile every 7 minutes.
Lowest Common Multiple: LCM ( 6, 7 ) = 42 minutes.
Me : 42 : 6 = 7 miles
My friend : 42 : 7 = 6 miles.
Answer:
8x+29
Step-by-step explanation:
open the brackets the collect like terms together
