Answer:
31/-45
Step-by-step explanation:
rise is 31(-8 to 23) and run is -45 since you are going from 30 to -15
4x -3y + z = -10...............(1)
2x +y + 3z = 0...............(2)
-x +2y - 5z = 17...............(3)
First we multiply 3*(2) and add it to (1)
6x +3y +9z =0..................+(1)..................> 10x + 10z = -10......(4)
Then we multiply -2*(2) and add it to (3)
-4x -2y -6z =0 ...................+(3)................> -5x -11z = 17...........(5)
Multiply 2*(5) and add it to (4)
-10x -22z = 34...................+(4).................> -12 z = 24 ..............>>> z = -2
Substitute z in (4)............> 10x +10(-2) = -10.............................>>> x = 1
Substitute x and z in (2).....> 2(1) +y + 3(-2) = 0..................>>> y = 4
Solution (x,y,z) = (1,4,-2)
To approximate the number of chairs that can be set up in floor space, we just have to divide the total floor area by the area that each chair needs. That is,
n = (40 ft x 32 ft) / (4 ft x 5 ft)
n = 64
Therefore, there are 64 chairs that can be set up in the floor.
Answer:
100π
Step-by-step explanation:
The equation of the circumference of a circle is C=2πr.
So to get an answer that not rounded you would keep the π and multiply 50 by 2= 100
