Answer:
Toshi must begin his walk at 11:00 AM in order that he can return by 8:00 PM.
Step-by-step explanation:
Since the Gotemba walking trail up Mount Fuji is about 9km long, and walkers need to return from the 18km walk by 8pm, if Toshi estimates that he can walk up the mountain at 1.5km / h on average, and down at twice that speed , these speeds taking into account meal breaks and rest times, to determine what is the latest time he can begin his walk so that he can return by 8pm the following calculation must be performed:
Climb: 1.5 km / h
Descent: 2 x 1.5 km / h = 3 km / h
Climb: 9 km / 1.5 km / h = 6 hours
Descent: 9km / 3 km / h = 3 hours
Total: 9 hours
8 PM = 20:00
20:00 - 09:00 = 11:00
Thus, Toshi must begin his walk at 11:00 AM in order that he can return by 8:00 PM.
Answer:
x² + 1
or if we suppose
x² + 1 = 0 the n we get value of x
x = ±1
Step-by-step explanation:
x²+x/x (cancel out both x/x we get)
x² + 1
Let suppose
x²+x/x = 0
x² + 1 =0
x²=-1
taking square root on both side we get
x = ±1
:)
Answer:
B.
Step-by-step explanation:
1 is D, because if you wrote out all the choices as equations, you would get that A is 1/2 n - 3, B is also 1/2 n - 3, C is 1/2 - 3, and D is 1/2(n - 3)
2 is A, because 3 times her age minus 4 is 3x-4, with x as Marcys age
3 is C, because although 11 x 5 is 55, it says that 5 times a number is LESS than 55, so the answer is 10, or C
4 is B because the mode is 92, the mean is 122, and the median is 88, which would mean that mean>mode>median