Answer:
Step-by-step explanation:
The question isn’t displaying properly, so I’ll use My own formatting.
y is the total cost in dollars, x is the number of gigabytes used
y = x + 12
For # four Draw something like this <
[email protected] (the @ being a filled circle) starting at positive 5.
Answer:
50 Swans or
100 Doves or
100 Hens
or
any combination that accomplish withthe following equation:
2x+y+z=100
where:
x: number of swans and x>0
y: number of doves and y>0
z: number of hens and z>0
Step-by-step explanation:
Treat x^4 as the square of p: x^4 = p^2.
Then x^4 - 5x^2 - 36 = 0 becomes p^2 - 5p - 36 = 0.
This factors nicely, to (p-9)(p+4) = 0. Then p = 9 and p = -4.
Equating 9 and x^2, we find that x=3 or x=-3.
Equating -4 and x^2, we see that there's no real solution.
Show that both x=3 and x=-3 are real roots of x^4 - 5x^2 - 36 = 0.
