Answer:
x=3, y=0.8
Step-by-step explanation:
8x+5y=28
4x+5y=16
Subtract the second simultaneous equation from the first.
You are left with: 4x=12
12/4=3
x=3
Substitute this back into one of the equations.
8(3)+5y=28
8*3=24
28-24=4
4=5y
4/5=0.8
y=0.8
Answer:
x=11
Step-by-step explanation:
4x + 3 = x+ 2x + 14
4x + 3 = 3 x + 14
4x - 3x = 14 -3
x= 14 - 3
x= 11
Answer:
6 < x
Step-by-step explanation:
4(3x + 2) <5(3x - 2)
Distribute
12x +8 < 15x -10
Subtract 12 x from each side
12x +8-12x < 15x-12x -10
8 < 3x - 10
Add 10 to each side
8+10 < 3x-10+10
18 < 3x
Divide by 3
18/3 < 3x/3
6 < x
Answer:
The information missing in step 6 is the last option:
m∠8 + m∠3 = 180°
Step-by-step explanation:
look at the picture