Answer:
20m, 20m,20 m and 22m = 82 m 4x+2=82
Step-by-step explanation:
equation 4x +2 =82
x +x+x+(x+2) =82
4x+2=82
4x=80
x=20
Answer:
$1.89
Step-by-step explanation:
1) 8p+3f=$10.39
2) 5p+4f=$10.51
where p represents pencil & f represents folder.
multiply the first equation by 5 and the second equation by 8.
40p+15f=$51.95
40p+32f=$84.08
Subtract
17f=$32.13
f=$32.13/17 =$1.89
Step-by-step explanation:
6x + 2 = y --------1
3y - 18x = 12 -----2
From 1
substitute y = 6x +2 in equation 2
3(6x + 2) - 18x = 12
18x + 6 - 18x = 12
Therefore, no solution!
Answer:
w=30.5 y=29
Step-by-step explanation:
2w=61 so w=30.5
61+y=90 so y=29
