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tamaranim1 [39]
4 years ago
9

X^2 - 10x + 13 = 0 Solve quadratic equation In simplest form

Mathematics
1 answer:
Salsk061 [2.6K]4 years ago
8 0

Answer:

5 \pm 2\sqrt{3}

Step-by-step explanation:

A quadratic equation in the form

ax^2+bx+c=0

Can be solved by using the formula

x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

In this problem, the equation is

x^2-10x+13=0

So, we have

a = 1

b = -10

c = +13

Using the equation above, we find:

x=\frac{-(-10)\pm \sqrt{(-10)^2-4(1)(13)}}{2(1)}=\frac{10 \pm \sqrt{48}}{2}=\frac{10 \pm 4\sqrt{3}}{2}= 5 \pm 2\sqrt{3}

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Match the graph with the correct equation
tatyana61 [14]
<h3>Answer: Choice D) </h3>

y + 2 = -(x - 4)

============================================

Explanation:

The slope of this line is -1 because each time we move down 2 units, we move to the right 2 units. So slope = rise/run = -2/2 = -1

The slope formula says the same thing more or less. Let's pick the two points (0,2) and (2,0) to find the slope through them

m = (y2-y1)/(x2 - x1)

m = (0-2)/(2-0)

m = -2/2

m = -1

-------------

Using that slope and a point on the line, we can form the equation. We can pick any point really as long as it's on the line. However, to have it match with the answer choices, we'll have to pick the point (4,-2)

Turn to point slope form

y - y1 = m(x - x1)

y - y1 = -1(x - x1) ... plug in the slope

y  - (-2) = -(x - 4) ... plug in the point (x1,y1) = (4, -2)

y + 2 = -(x - 4)

4 0
3 years ago
3x−4) −(x−5) what the answer
irina [24]

Answer:

2x+1

Step-by-step explanation:

3x-4-x+5 = 3x-x+5-4 = 2x+1

3 0
3 years ago
Would 1, 2, 5, form a right angle​
BabaBlast [244]
Im assuming you mean the sides of a triangle which the answer would be no as 1+4 does not equal to 25. (A2+b2=c2) for a right triangle
5 0
3 years ago
Lucas esta buscando piso. ¿que oferta tiene el mejor precio por m cuadrado? VILLASUR ENSANCHE: superficie: 0,75 dam cuadrados su
Jet001 [13]

Answer:

Area 1 is the best option

Step-by-step explanation:

Given Data:

Area 1 = 0.75 dam square

Price = €11,620

Area 2 = 0.009 ha

at €193,500

Area 3 = 0.84a

at €68,900

Where ha ( hectare )

a ( area )

Solution

First we convert all areas to square meter ( m² )

Area 1 = 100 * 0.75 dam square

= 75m²

Cost of area 1/ square meter

= €11,620 / 75m²

= €154.93 / square meter

Area 2 = 0.009 ha * 10,000

= 90m²

Cost of area 2 / square meter

= €193,500 / 90m²

= €2,150 / square meter

Area 3 = 0.84a * 100

= 84m²

= Cost of area 3 / square meter

= €68,900 / 84m²

= €820.23 / square meter

4 0
4 years ago
Which of the following is a statistical question?
balandron [24]

Answer:

D. How old was each U.S. President when he was elected?

Step-by-step explanation:

3 0
4 years ago
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