Answer:
8.2
Step-by-step explanation:
let me know if its wrong
Answer:
10x . . . . . (Note the sign of the middle term is negative. 10x goes in the box.)
Step-by-step explanation:
The sum of the two roots is ...
... (5 -3i) +(5 +3i) = 10
In a quadratic with leading coefficient 1, the coefficient of the 1st-degree term is the opposite of the sum of the roots. Here, that means the middle term is -10x. The minus sign is given, so the answer is 10x.
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<em>How Do We Know?</em>
When "a" and "b" are roots of a quadratic in x, it has factors (x -a)(x -b). The product of those two factors is ...
... (x -a)(x -b) = x² -(a+b)x +ab
Here, that means the product of the factors (5 -3i)(5 +3i) is ab = 34, which it is. Their sum is (a+b) = 10, so the x-term is -(a+b)x = -10x.
Simplifying
6.4n + -10 = 4.4n + 6
Reorder the terms:
-10 + 6.4n = 4.4n + 6
Reorder the terms:
-10 + 6.4n = 6 + 4.4n
Solving
-10 + 6.4n = 6 + 4.4n
Solving for variable 'n'.
Move all terms containing n to the left, all other terms to the right.
Add '-4.4n' to each side of the equation.
-10 + 6.4n + -4.4n = 6 + 4.4n + -4.4n
Combine like terms: 6.4n + -4.4n = 2n
-10 + 2n = 6 + 4.4n + -4.4n
Combine like terms: 4.4n + -4.4n = 0.0
-10 + 2n = 6 + 0.0
-10 + 2n = 6
Add '10' to each side of the equation.
-10 + 10 + 2n = 6 + 10
Combine like terms: -10 + 10 = 0
0 + 2n = 6 + 10
2n = 6 + 10
Combine like terms: 6 + 10 = 16
2n = 16
Divide each side by '2'.
n = 8
Simplifying
n = 8
<em>-ur local skatergirl, Rin:)</em>
Answer:
Graph 2
Step-by-step explanation:
If you do a line test by taking your utensil vertically and sliding it across, no point overlaps.
Discriminant: 24
Solutions: x=−3± the square root of 6
