Answer:
0.64
Step-by-step explanation:
Answer:
C) 320 m^3
Step-by-step explanation:
volume of a rectangular prism is Length times with times hight
10 x 4 = 40 x 8 = 320
The information we have is:
So we can find that two coordinates are ( -2,-8 ) and ( 3,7 ) so we can use the equation to find the slope so:
So the equation now will be:
So we can replace one coordinate to find b so:
So the final equation is:
The answer is x = 4
y = -1
z = -3
<span>3x+2y+z=7
5x+5y+4z=3
3x+2y+3z=1
________
Let's take the first and the third equation, multiply the first one by (-1) and sum them up:
</span>3x+2y+z=7
3x+2y+3z=1
____
-3x-2y-z=-7
3x+2y+3z=1
____
2z = -6
z = -6/2
z = -3
Substitute z in all equations:
3x+2y+z=7
5x+5y+4z=3
3x+2y+3z=1
______
3x + 2y - 3 = 7
5x + 5y - 12 = 3
3x + 2y - 9 = 1
______
3x + 2y = 10
5x + 5y = 15
3x + 2y = 10
The first and the third equations are the same, so one can be excluded:
3x + 2y = 10
5x + 5y = 15
Multiply the first equation by -5 and the second equation by 2 and sum them up:
-15x - 10y = -50
10x + 10y = 30
_________
-5x = -20
x = -20/-5
x = 4
Substitute x:
3x + 2y = 10
12 + 2y = 10
2y = 10 - 12
2y = -2
y = -2/2
y = -1
The bill increased by 17%. 248/100=2.48 and 265/100=2.65 they both equal the percentage and 2.65-2.48=0.17
