Given the matrix showing flight times between
cities, which of the following statements is true?
0 The flight time from city 2 to city 4 is 2.1
hours.
Flight times between cities in hours
Rows represent the city of departure.
Columns represent the city of arrival.
The flight time to return from any city is the
same as the flight time to fly to that city.
o
The matrix is square.
To 3.2 3.5 0 5.47
2.6 0 1.8 2.
1 0
Loo 0 3.
80
16.8 ooo7
0 0 0 6.2 0
Using one or more flights, it is possible to get
from any city to any other city.

I’m vary good with science if you need with that

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.

I’m pretty sure the * means multiplication. so, if you multiply 5*1, it would equal 5. they are basically are-writing 5x1 as 5*1. so they would be… 5 10152025303540455055

Ok here we go ..there are plenty of ways to solve such math problems but we will go for the smartest and easiest ..5x+2y=7  -2x+6y=9we rearrange them into the following ..by multiplying the 1st equation by 2 it becomes 10x + 4y = 14we rearrange it and so it becomes 10x = 14 - 4yas for the second equation we multiply it by 5 and rearrange it so it becomes as to the following ..-10x + 30y = 45rearranging so 10x = 30y -45now 10x equals both 14 - 4y and 30y -45so   14 - 4y = 30y -4531 = 26yy= 31/26 = 1.19 or around 1.2so by now we can calculate x easily as  -2x+6y=9so 2x = 6y -9 = 6 * 31/26 - 9 = -1.84  then x = - 0.92 or around -0.9best luck!