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3 years ago

20 POINTS PLUS A BRAINLIEST IF ITS RIGHT!!!

Mathematics

1 answer:

kaheart [24]3 years ago

4 0

I believe answer is any real number
so

<span>D.
x can be any real number</span>

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Plz help very important

allsm [11]

I hate questions like this. It's like wishing for more wishes.

7 0

3 years ago

How do I find the area of an octagon which has 7m on each side and the height is 8.8m

Naddika [18.5K]

Answer:

236.59

Step-by-step explanation:

The formula 2(1+ $\sqrt{2}$ ) $l^{2}$ can be used. Substitute the length of one side into the equation and solve.

5 0

2 years ago

Match each equation on the left with the number and type of its solutions on the right.

klemol [59]

Answer:

Step-by-step explanation:

1). Given equation is,

2x² - 3x = 6

2x² - 3x - 6 = 0

To find the solutions of the equation we will use quadratic formula,

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

Substitute the values of a, b and c in the formula,

a = 2, b = -3 and c = -6

x = $\frac{3\pm\sqrt{(-3)^2-4(2)(-6)}}{2(2)}$

x = $\frac{3\pm\sqrt{9+48}}{4}$

x = $\frac{3\pm\sqrt{57}}{4}$

x = $\frac{3+\sqrt{57}}{4},\frac{3-\sqrt{57}}{4}$

Therefore, there are two real solutions.

2). Given equation is,

x² + 1 = 2x

x² - 2x + 1 = 0

(x - 1)² = 0

x = 1

Therefore, there is one real solution of the equation.

3). 2x² + 3x + 2 = 0

By applying quadratic formula,

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

x = $\frac{-3\pm\sqrt{3^2-4(2)(2)}}{2(2)}$

x = $\frac{-3\pm\sqrt{9-16}}{4}$

x = $\frac{-3\pm i\sqrt{7}}{4}$

x = $\frac{-3+ i\sqrt{7}}{4},\frac{-3- i\sqrt{7}}{4}$

Therefore, there are two complex (non real) solutions.

3 0

2 years ago

I need help on this please SHOW WORK

elena-s [515]

$\boxed{\large{\bold{\blue{ANSWER~:) }}}}$

See this attachment

7 0

3 years ago

Marika solved the equation (6x + 15)2 + 24 = 0. Her work is below. 1. (6x + 15)2 = –24 2. StartRoot (6 + 15) squared EndRoot = S

malfutka [58]

Answer:

There are no real solutions to this equation because the square root of a negative number is not real. So answer B

Step-by-step explanation:

11 0

3 years ago

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