Answer: thanks for the points 1=1==1=1=14+6-3=2
Step-by-step explanation:
Answer:
<em>x</em> = 3.5
Step-by-step explanation:
P= 55
l= 2x+4
W= 3x+6
P= 2(L+W)
55= 2(2x+4+3x+6)
55=2(5x+10)
55=10x+20
35=10x
3.5=x
ANSWER
(6,-5)
EXPLANATION
The given system has equations:
2x + y =7...(1)
x- 2y = 16...(2)
We multiply equation (1) by 2 to get,
4x+2y=14...(3)
We add equations (2) and (3) to obtain,
4x+x+2y-2y=14+16
This implies that,
5x= 30
Divide both sides by 5,
x=6
We substitute x=6 into equation (1) to get,
2(6) +y=7
12+y=7
y=7-12
y=-5
The solution is (6,-5)
Answer:
10/9
Step-by-step explanation:
5x-15 4x+12
--------- * ------------
3x+9 6x-18
Factor
5(x-3) 4( x+3)
----------- * ----------
3(x+3) 6( x-3)
Cancel like terms
5/3 * 4/6
20/18
Divide top and bottom by 2
10/9
15 square feet because 1.25*3=3.75
3.75*4 = 15