3 years ago

Gloria is making bouquets with silk

Mathematics

2 answers:

8_murik_8 [283]3 years ago

6 0

the answer is 8

Step-by-step explanation:

BabaBlast [244]3 years ago

4 0

She will make 7 bouquets and she will put back 6 roses

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The steepest part of any walking trail in Craters of the Moon National Monument rises 9 yards vertically for every 50 yards trav

pogonyaev

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4.5

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2 years ago

Solve x2 = 12x – 15 by completing the square. Which is the solution set of the equation? Solve x2 = 12x – 15 by completing the s

Svetlanka [38]

Answer: $6+\sqrt{21}\ \text{and}\ 6-\sqrt{21}$

Step-by-step explanation:

Given

Quadratic equation is

$x^2-12x+15=0$

Solving by completing the square method

$\Rightarrow x^2-2\cdot 6\cdot x+15=0\\\text{add and subtract 36}\\\Rightarrow x^2-2\cdot 6\cdot x+15+36-36=0\\\Rightarrow x^2-2\cdot 6\cdot x+36+(-36+15)=0\\\text{using}\ (a-b)^2=a^2+b^2-2ab\\\Rightarrow (x-6)^2-21=0\\\Rightarrow (x-6)^2=21\\\Rightarrow x-6=\pm \sqrt{21}\\\Rightarrow x=6\pm \sqrt{21}$