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3 years ago

12

As school prefect, write a letter to your District or municipal or metropolitan executive requesting the maintenance of the buil

dings in your school. at least 250 words

1 answer:

serious [3.7K]3 years ago

6 0

Answer:

jsjsid sjdic8fnw jv 8djw efjiw eifwjiffjw djfivieo UK

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4/23+square root of 11

creativ13 [48]

The answer i got is 3.5 rounded

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3 years ago

Can you graph this equation - Y=3×^2

Vladimir [108]

So you start at 0 then (1,3) , (2,12) and the other side would be (-1,3) , (-2,12)

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Suppose that you put 2 dimes, 2 nickels, and 1 penny into a bag. Then you choose one coin from the bag without looking, and reco

m_a_m_a [10]

Answer:

Step-by-step explanation:

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3 years ago

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taurus [48]

Answer:

$x^2 - 2x + 10$ , option B

Step-by-step explanation:

Complex numbers:

The most important relation that involves complex numbers is given by:

$i^2 = -1$

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

In this question:

The solutions are:

$x_1 = 1 - 3i, x_2 = 1 + 3i$

We have to find the polynomial. All option have $a = 1$ . So

$(x - (1 - 3i))(x - (1 + 3i)) = x^2 - x(1 + 3i) - x(1 - 3i) + (1 - 3i)(1 + 3i) = x^2 - x -3ix - x + 3ix + 1^2 - (3i^2) = x^2 - 2x + 1 - 9i^2 = x^2 - 2x + 1 - 9(-1) = x^2 - 2x + 10$

The correct answer is given by option b.

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3 years ago

Brainlyest for best answer

bazaltina [42]

Answer:

21

Step-by-step explanation:

Add all of the numbers together then divide by 5

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