7 is the right answer(please rate 5.0 stars so i can help other people out thanks)
Answer:
In this case, the equation that models the value of an initial investment of P dollars in t years at an annual interest rate of r is given by A = Pert.
Step-by-step explanation:
We have, Discriminant formula for finding roots:
Here,
- x is the root of the equation.
- a is the coefficient of x^2
- b is the coefficient of x
- c is the constant term
1) Given,
3x^2 - 2x - 1
Finding the discriminant,
➝ D = b^2 - 4ac
➝ D = (-2)^2 - 4 × 3 × (-1)
➝ D = 4 - (-12)
➝ D = 4 + 12
➝ D = 16
2) Solving by using Bhaskar formula,
❒ p(x) = x^2 + 5x + 6 = 0
So here,
❒ p(x) = x^2 + 2x + 1 = 0
So here,
❒ p(x) = x^2 - x - 20 = 0
So here,
❒ p(x) = x^2 - 3x - 4 = 0
So here,
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Answer:
0 and 4
1 and 3
2 and 2
3 and 1
4 and 0
Step-by-step explanation:
If you need 4 gifts and you want to spend less than $40, then you could buy
1 cd+ 3 dvds for $25
2 cds + 2 dvds for $24
3 cds + 1 dvd for $20
4 cds and 0 dvds for $16
0 cds and 4dvds for $32
Any of these solutions will work
Answer:
its #3
Step-by-step explanation:
hope this helps