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3 years ago

The numbers -12, -7, -2, 3, ... follow a pattern. What are the next three numbers in this pattern?

Mathematics

1 answer:

liq [111]3 years ago

5 0

Answer:

8, 13, 18

Step-by-step explanation:

Its adding 5 each time so it ends up at positive values all the way up to 18

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A square has a side of 6.25 feet. What is the area in square feet? Round to the correct significant digits

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3 years ago

Which of these is a statistical question? I accidentally clicked an clicked an answer, but I want to know which one is the right

sasho [114]

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3 years ago

Reptile [31]

Answer:

The real zeros of f(x) are x = 0.3 and x = -3.3.

Step-by-step explanation:

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 problem, we have that:

$f(x) = x^{2} + 3x - 1$

$a = 1, b = 3, c = -1$

$\bigtriangleup = 3^{2} - 4*1*(-1) = 13$

$x_{1} = \frac{-3 + \sqrt{13}}{2*1} = 0.3$

$x_{2} = \frac{-3 - \sqrt{13}}{2*1} = -3.3$

The real zeros of f(x) are x = 0.3 and x = -3.3.

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3 years ago