Answer:
Cost of one apple pie is $12.50 and cost of one lemon merigue pie is $8.75
Step-by-step explanation:
Let,
x be the cost of each apple pie
y be the cost of each lemon merigue pie
According to given statement;
5x+2y=80 Eqn 1
3x+6y=90 Eqn 2
Multiplying Eqn 1 by 3
3(5x+2y=80)
15x+6y=240 Eqn 3
Subtracting Eqn 2 from Eqn 3
(15x+6y)-(3x+6y)=240-90
15x+6y-3x-6y=150
12x=150
Dividing both sides by 12
Putting x=12.50 in Eqn 1
5(12.50)+2y=80
62.50+2y=80
2y=80-62.50
2y=17.50
Dividing both sides by 2
Hence,
Cost of one apple pie is $12.50 and cost of one lemon merigue pie is $8.75
Step-by-step explanation:
Well, let's walk through it, shall we?
3x − 5 = 4 + 3x
Our first step is to simplify both sides of the equation.
3x − 5 = 4 + 3x
3x + −5 = 4 + 3x
3x − 5 = 3x + 4
Then, we subtract 3x from both sides.
3x − 5 − 3x = 3x + 4 − 3x
−5 = 4
FInally, we'll add 5 to both sides.
−5 + 5 = 4 + 5
0 = 9
In conclusion, your answer is:
This would be false. x = -3 is not a solution to 3x - 5 = 4 + 3x
The sum of the adjacent angles of a parallelogram is always equal to 180°.
So we know that
.
When we simplify that expression:
Isolate the y by divide both sides by 3:
Answer:
x=10
Step-by-step explanation: