3 years ago

Plzzzzzzzzzz thanks for the helpp

Mathematics

2 answers:

natali 33 [55]3 years ago

8 0

Your answer is 28.26.

Mademuasel [1]3 years ago

4 0

28.26 - Samuel Dixon

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Leno4ka [110]

Answer:

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3 years ago

Factorize this expression completely <br>using (a-b)² formula<br>3a²- 36a + 108

Novosadov [1.4K]

Answer:

$3a^2 - 36a + 108 = (\sqrt{3}a - 6\sqrt{3} )^2$

Step-by-step explanation:

$3a^2 = (\sqrt{3} a)^2\\108 = 9 \times 4 \times 3= 3^2 \times 2^2 \times 3 = (3\times2 \sqrt{3} )^2 = (6\sqrt{3})^2$

$so, a = \sqrt{3} a \ , \ b = 6\sqrt{3} \\\\(a - b)^2 = a^2 -2ab + b^2\\\\-36a = -2ab\\\\-36a = -2 \times \sqrt{3} a \times 6\sqrt{3}$

Therefore ,

$3a^2 - 36a + 108 = (\sqrt{3}a )^2 - 2(\sqrt{3}a \times 6\sqrt{3} ) + (6\sqrt{3} )^2 = (\sqrt{3}a - 6\sqrt{3} )^2$

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3 years ago

(9 x 10) + (20x + 21) = 571<br><br> What does (x) equal

creativ13 [48]

(9 × 10) + (20x + 21) = 571
90 + 20x + 21 = 571
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÷ 20
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vagabundo [1.1K]

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The y coordinates are -1 and 3. They add to -1+3 = 2

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4 years ago

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