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3 years ago

14

I need help please. Thank you.

1 answer:

Paladinen [302]3 years ago

5 0

Answer:

Increase of 20%

Step-by-step explanation:

change = new-old/old = 54 - 45/45 = 9/45 = 0.20

Because this is a positive number this was a percent increase.

%change = |change| * 100 = % = |0.20| * 100 = % = 20%

Therefore your answer is an increase of 20%

Hope this helps,

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Katarina [22]

Answer:

Step-by-step explanation:

Explicit formula of the sequence,

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Jet001 [13]

Answer:

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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:

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

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In this question, we have that:

$2x^2 + x - 6 = 0$

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$x_{1} = \frac{-1 + \sqrt{49}}{2*2} = \frac{6}{4} = \frac{3}{2}$

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So the roots are $x = (\frac{3}{2}, -2)$ , which is given by option C.

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Step-by-step explanation:

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