A quadratic equation refers to an equation with the highest degree of 2. The first equation, 2(x+5)^2 + 8x + 5 + 6 = 0 is the only one with the highest degree of 2 (in (x+5)^2), so that is the quadratic.
Answer:
8 books
Step-by-step explanation:
If there are 4 books for $10 and Regina has $28, the most Regina can spend is $20. $10 for 4 books so $20 for 8 books.
Answer: 15/16
there are 15 scenarios in which you get at least 1 head and one where you don't therefore the answer is 15/16
Answer:
x = 6
Step-by-step explanation:
f(x) = 2(x + 4)
Let f(x) =20
20 = 2(x + 4)
Divide by 2
20/2 = 2/2 (x+4)
10 = x+4
Subtract 4 from each side
10-4 =x+4-4
6 =x
