Answer:
During today's practice he walked 1800 m.
Explanation:
Total distance jogged = 7200 m
Distance per jog = 800 m
Number of jogs = Total distance jogged/Distance per jog
= 7200/800 = 9 jogs.
Number of jogs = Number of walks = 9
Total distance walked = Number of walks x Distance per walk
Distance per walk = 200 m
Total distance walked = 200 x 9 = 1800 m
During today's practice he walked 1800 m.
Answer:
The probability of Dan making less than $255 is 0.5987 or 59.87%
Step-by-step explanation:
Given that:
Mean = μ = $240
SD = σ = $60
We have to find the probability that Dan will make less than $255
First of all, we have to find the z-score of 255
z-score is denoted by z and is given by the formula
Here,
x = 255
Putting the values
Now we have to look at the z-score table to find the probability of 0.25
P(x<255) = 0.5987
Converting into percentage
59.87%
Hence,
The probability of Dan making less than $255 is 0.5987 or 59.87%
Answer:
15x+25 ; 70
Step-by-step explanation:
Given that,
Fernando cleans pools for the summer for $25 an hour plus a supply fee of $15.
Here, $25 is constant and $15 increases as the number of hour increase. For x hours, the cost for Fernando to clean a pool is given by :
y = 15x+25
For 3 hours,
y = 15(3)+25
= 45 + 25
= 70
So, the required option is (c) " 15x+25 ; 70 ".
