Answer:
75x² + 10x - 2
Step-by-step explanation:
Substitute x = 5x into f(x), that is
f(5x) = 3(5x)² + 2(5x) - 2
= 3(25x²) + 10x - 2
= 75x² + 10x - 2
Hello from MrBillDoesMath!
Answer:
x = -3, y = 0
Discussion:
5x + 5y = -15 =>
x + y = -3 => (divide both sides by 5)
x + y - y = -3 -y => (subtract y from both sides)
x = -3 - y
Substitute x = -3 - y into the top equation:
-3x - 5y = -9 =>
-3(-3-y) - 5y = 9 => ( substitute -3 -y for x)
(-3)(-3) + (-3)(-y) - 5y = 9 =>
9 + 3y - 5y = 9 => ( -*- is a + number)
9 -2y = 9 =>
9 - 9 -2y = 9 - 9 => (subtract 9 from both sides)
-2y = 0 =>
y = 0
Since x = -3 -y, x = -3 - 0 = =3
Regards,
MrB
P.S. I'll be on vacation from Friday, Dec 22 to Jan 2, 2019. Have a Great New Year!
Answer:
18c-30d+36
Step-by-step explanation:
Answer:
x = 100
Step-by-step explanation:
350x + 22,000 = 410x + 16,000
-350x -350x
22,000 = 60x + 16,000
-16,000 -16,000
6,000 = 60x
6,000 / 60
x = 100
Same=same figure out what the x is both x are the same number on both side is the same answer hope that helps
