Answer:
Equation shown
Step-by-step explanation:
Eq(1): x-3y=-12
X=-12+3y
=-4+y
Eq(2): x-3y=-6
X=-6+3y
=-2+y
(x+4)(x-4) =0
x +4 = 0
x = -4
x - 4 =0
x = 4
answers , x = -4 and x=4
Answer:
The tip was 7.77 dollars, which represent 18.5% of the value of the bill
Step-by-step explanation:
Dollars paid as tip
$49.77 - $42 = $7.77
$42 represent 100% of the bill
$7.77 ---------------x
x = (7.77/42)*100% = 18.5%
Answer:
y=57, x=77
Step-by-step explanation:
The line that creates x-3 is parrelell to the line that makes 74 degrees
You know that x-3=74
When you simplify you get x=77
Now that you know that x-3=74 you can add all the angles to 180 because they are a supplementary angle
74+41+(y+8)=180, then simplify
115+y+8=180, simplify more
123+y=180
y=57
<span><span>
It would be 17.64 for the area</span></span>
