2 years ago

Find the discriminant of the quadratic equation given. Use

Mathematics

1 answer:

sergiy2304 [10]2 years ago

3 0

It’s 40 because a = 686

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If a=b, then a-6=b-6

Dima020 [189]

Answer:

Step-by-step explanation:

it subtracts equally on each side

8 0

2 years ago

Find the equation of the line of symmetry of y= (x+2)(x-8).

Daniel [21]

Answer:

line of symmetry , x = 3

Step-by-step explanation:

Standard form of quadratic equation is y = ax^2 + bx + c, where a, b, and c equal all real numbers. You can use the formula x = -b / 2a to find the line of symmetry.

$y = (x+ 2)(x-8)\\\\y = (x^2 -8x + 2x -16)\\\\y = x^2 -6x -16$

a = 1, b = -6, c = -16

Line of symmetry is ,

$x = -\frac{b}{2a} = -\frac{-6}{2} = 3$

4 0

1 year ago

You deposit $2200 into three separate bank accounts that each pay 3% annual interest. How much interest does each account earn a

Keith_Richards [23]

This can be solve using the formula:
F = P ( 1 + i)^n
where F is the money after n years
P is the initial amount of money
i is the annual interest rate
n is the time in years
since you deposit in 3 accounts P = 2200/3
F = ( 2200 / 3) ( 1 + 0.03)^6
F = $ 875.64 is the money each account earned after 6 years

7 0

2 years ago

Simplify 16a divided by 4ab

zimovet [89]

Answer:

4b^-1

Step-by-step explanation:

16a/4 = 4a

4a/a = 4

4/b = 4b^-1

5 0

2 years ago