Well just substitute y (the first equation) into the second equation.
So
5x-4(5-3x)=-3
Then just solve the equation from there.
5x-20+12x=-3
17x=17
x=1
and if you need y, y=2
Answer:
F
Step-by-step explanation:
Multiply -3 by 6.5 and you'll get your answer :)
I hope I helped!
Answer:
7 pounds of almond
Step-by-step explanation:
It is $3.50 per pound.
If she spent a total of $24.50, just divide 24.50 by 3.50
= 7
We can verify this by multiplying 3.50 by 7 which gives us 24.50
Answer:
y = -(x + 5)² + 4
Step-by-step explanation:
The roots are -3 and -7, so:
y = a (x + 3) (x + 7)
Distribute and complete the square:
y = a (x² + 10x + 21)
y = a (x² + 10x + 25 − 4)
y = a (x² + 10x + 25) − 4a
y = a (x + 5)² − 4a
The vertex is (-5, 4), so a = -1.
y = -(x + 5)² + 4