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VMariaS [17]
4 years ago
6

What are the roots of the equation x^2-4x+13=0?

Mathematics
1 answer:
sattari [20]4 years ago
6 0
Hello : 
x² -4x +13  = 0
(x²-2(2)(x) +2²) -2² +13 = 0
(x-2)² +9 = 0
in : R no solution reals
in:C two solutions :
x-2 =3i  or x-2 = -3i
x =2+3i   or x = 2-3i   because : - 9 = 9i² = (3i)².....  i² = -1
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2 math questions. Please show your work if you can, I struggle with this, Thanks !!<br> 20pts
castortr0y [4]

Step-by-step explanation:

To find the solution, Tanisha can graph each side of the equation as its own function:

y₁ = log₃(5x)

y₂ = log₅(2x + 8)

The solution is where the two curves cross.  From the graph, that happens at x ≈ 0.957.

desmos.com/calculator/lkukjhn3g2

5 0
3 years ago
Please please help 100 points
stiks02 [169]

We're given

\displaystyle \int_4^{-10} g(x) \, dx = -3

which immediately tells us that

\displaystyle \int_{-10}^4 g(x) \, dx = 3

In other words, swapping the limits of the integral negates its value.

Also,

\displaystyle \int_4^6 g(x) \, dx = 5

The integral we want to compute is

\displaystyle \int_{-10}^6 g(x) \, dx

which we can do by splitting up the integral at x = 4 and using the known values above. Then the integral we want is

\displaystyle \int_{-10}^6 g(x) \, dx = \int_{-10}^4 g(x) \, dx + \int_4^6 g(x) \, dx = 3 + 5 = \boxed{8}

7 0
3 years ago
What are the solutions of the equation x^4-5x^2-36=0? Use factoring to solve
Murljashka [212]
X = -3, 3, 2i, -2i
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3 0
3 years ago
Solve for t.<br><br><br>16 - 2t= t + 9 + 4t​
Sloan [31]

Answer:

The solution is t = 1

Step-by-step explanation:

we have:

16 - 2t= t + 9 + 4t​

or 16 - 2t = 5t + 9

-2t - 5t = 9 - 16

and

- 7t = -7

or t = -7/-7

t = 1

The solution is t = 1

8 0
3 years ago
Read 2 more answers
What is the average rate of change of the function f(x)=2(3)x from x = 2 to x = 4?
ruslelena [56]
X) = 3 ln(x)

g(x=2) = 3 ln(2)
g(x=4) = 3 ln(4) = 3 ln(22) = 6 ln2

We have two ordered pairs:

(x,3 ln(2)) and (4,6 ln(2))

The average rate of change is the slope (m) of the secant line connecting the two points:

m = (6 ln2 - 3 ln2)/(4-2) = 3ln(2)/2 ≅ 1.04
8 0
3 years ago
Read 2 more answers
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