Answer:
Step-by-step explanation:
hello :
r+b=7... (*)
3.75r+2.75b=22.25.... (**)
use (*) : r = 7 - b
put this value in (**) :
3.75(7 - b)+2.75b = 22.25
26.25 -375b +2.75b = 22.5
-375b +2.75b = 22.5 - 26.25
- b = -3.75
so : b = 3.75
but : r = 7 - b
r = 7 - 3.75
r = 3.25
Answer:
3.24 years
Step-by-step explanation:
We know that for the truck to become half of the value it has to decrease by %50 if it decreases by %15.4 the real question is 50/15.4=3.24 years because how many years will it take for %15.4 to pile up and eventually become %50
<em>Answer:</em>
<em>x=4 y=3</em>
<em>Step-by-step explanation:</em>
<em>rewrite the equations- y=x-1 2x-3y=-1</em>
<em>solve y=x-1 for y</em>
<em>y=x-1</em>
<em>sub for x-1 for y in 2x-3y=-1</em>
<em>2x-3y=-1</em>
<em>2x-3(x-1)=-1</em>
<em>-x+3=-1</em>
<em>-x+3+-3=-1+-3</em>
<em>-x=-4</em>
<em>divide both sides by -4</em>
<em>x=4</em>
<em>sub 4 for x in y=x-1</em>
<em>y=x-1</em>
<em>y=4-1</em>
<em>y=3</em>
<em>WE ARE VENOM</em>
Answer:
(3,-4)
Step-by-step explanation:
3x+(first equation)=5
3x+(-x-1)=5
2x-1=5
x=3, solve for y;
y=-3-1, y=-4
Best to take this in two parts.
1, find the factors of 36:
1 and 36
2 and 18
3 and 12
4 and 9
6 and 6
2, Now, using those, add the factors and see which add up to 15... in this case, that would be 12 and 3!
