Answer: He actually rode 2 miles per hour on his trip
Step-by-step explanation: Maybe unconventional, but express the time it took, then figure the speed.
Time = distance /speed t will represent time, s is the speed: t = 30/s Use the rime it would have taken at the higher speed to create an equation:
t-12 = 30/s+8 replace the y with the 30/s
30/s -12 = 30/s+8
(s)(30/s -12 ) = (s)(30/s+8 ) Cross multiply to cancel denominators
(s-8)(30 -12s) = (s-8)(30s/s+8 ) ==> 30s +240 -12s² -96s =30s Simplify:
(-1)(-12s² -96s +240 ) =0 ==> 12s² +96s -240 divide all by 12
s² + 8s -20 = 0 Factor and solve for s
(s +10)(s -2) =0 s-2=0 S= 2
Proof:
30/2 = 15 hours for original trip at 2mph,
increase speed by 8mph 2 + 8 = 10mph
30 miles at 10mph takes 3 hours; that is 12 hours less than his actual trip.
(Brainilest, please :-)
Answer:
8 1/3
Step-by-step explanation:
Step 1: Simplify
50/6 = 8 2/6
Step 2: Simplify fraction
2/6 = 1/3
Step 3: Add it up
8 1/3
Answer:
y=15
Step-by-step explanation:
3y+27=5y-3
27=2y-3
30=2y
y=15
Thats assuming A and B are equal ^
Hope this helps :)
The average for the 2 percents added together is 0.5333 I believe this is the answer. And to double check look up average percentage calculator and Average Calculator - Omni will pop up and use that calculator to be sure. Hope this helped.
Answer:
Mean: 11.5 Median: 6
Step-by-step explanation:
For the mean find the average by adding all of the numbers up and dividing by the number of numbers in the set.
For the median arrange the numbers in order of least to greatest then find the middle number if there is two add them together and divide by two.
