2 years ago

1. Find the rate of

Mathematics

1 answer:

Gre4nikov [31]2 years ago

6 0

Answer:

Rate of change: -3.5

Step-by-step explanation:

(-3,10.5) and (-2,7)

(7 - 10.5) / ( -2 - - 3)

= -3.5 / 1

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Help, i've been trying for around 30mins and I can't figure it out.

omeli [17]

Answer:

<h2>Option A and C</h2>

Step-by-step explanation:

As,

$2 \sqrt{75} + 3 \sqrt{50}$

$= 2 \sqrt{25 \times 3} + 3 \sqrt{25 \times 2} (A)$

$= 2 \times 5 \sqrt{3} + 3 \times 5 \sqrt{2}$

$= 10 \sqrt{3} + 15 \sqrt{2} (C)$

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3 years ago

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Which phrase should be inserted in the line to correctly compare the two fractions? use the models for help.

mariarad [96]

Answer:

Step-by-step explanation:

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3 years ago

Thu gọn biểu thức : (x-5)(x+5)-(x+1)^2

Kipish [7]

$(x-5)(x+5)-(x+1)^2\\=x^2 -25-(x^2+2x +1)\\=x^2 -25-x^2-2x -1\\=-2x-26$

ANSWER: -2x -26

Ok done. Thank to me :3

5 0

1 year ago

<img src="https://tex.z-dn.net/?f=%20-%20x%20-%202%20%5Cdiv%20x%28x%20%7B%7D%5E%7B2%7D%20%20-%204%29" id="TexFormula1" title=" -

saw5 [17]

Answer:

Step-by-step explanation:

Hello,

First of all we will take any real number x different from 0, -2, +2 as dividing by 0 is not allowed and then we can write

$\dfrac{( - x - 2)}{x(x^2 - 4)}=-\dfrac{x+2}{x(x-2)(x+2)}=\large \boxed{ -\dfrac{1}{x(x-2)}}$

because we know that

$x^2-4=x^2-2^2=(x-2)(x+2)$

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

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3 years ago

A rectangle has a perimeter of 30. It is dilated by a scale factor of 2.

LuckyWell [14K]

Answer:

It is 60.

Step-by-step explanation:

When shapes are dilated (when they get bigger or smaller), perimeter changes linearly—in direct proportion with length. This means if the scale factor is 2, then you multiply it by 2. 2 multiplied by 30 equals 60.

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3 years ago