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sleet_krkn [62]
3 years ago
5

What equation results from completing the square and then factoring? x2 + 6x = 13

Mathematics
2 answers:
larisa [96]3 years ago
7 0
Step 1: Subtract 13 from both sides.
<span><span><span><span>x^2</span>+<span>6x</span></span>−13</span>=<span>13−13</span></span><span><span><span><span>x^2</span>+<span>6x</span></span>−13</span>=0</span>
Step 2: Use quadratic formula with a=1, b=6, c=-13.
<span>x=<span><span><span>−b</span>±<span>√<span><span>b2</span>−<span><span>4a</span>c</span></span></span></span><span>2a</span></span></span><span>x=<span><span><span>−<span>(6)</span></span>±<span>√<span><span><span>(6)</span>2</span>−<span><span>4<span>(1)</span></span><span>(<span>−13</span>)</span></span></span></span></span><span>2<span>(1)
</span></span></span></span><span>x=<span><span><span>−6</span>±<span>√88</span></span>2
</span></span><span><span>x=<span><span>−3</span>+<span><span><span>√22</span><span> or </span></span>x</span></span></span>=<span><span>−3</span>−<span>√22
</span></span></span>Answer would be 
<span><span>x=<span><span>−3</span>+<span><span><span>√22</span><span> or </span></span>x</span></span></span>=<span><span>−3</span>−<span>√<span>22</span></span></span></span>
levacccp [35]3 years ago
7 0

Apex answer (x+3)^2=22

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Find an equation of a line through (2, 1) and perpendicular to −2x + 4y = 8
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Hello:<span>
the equation is : y = ax+b
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a = -2       y=(-2x+b
the line that passes through (2,1) :1 = -2(2)+b
b =5
<span> the equation is :  y  = -2x+5</span></span>

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Urgenttttt please I need it fast​
dolphi86 [110]

Answer:

Below in bold.

Step-by-step explanation:

c) 3 x (9^2)^3/4 x ((81^3)^5/6

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f) (5x^-1y^2)^-2 / (25 x^2 y - 1)^2

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Jason has $90 to spend. He wants to purchase a bag for $30, one eraser for $10, and three pencils. Each of the pencils costs the
snow_tiger [21]
90 = 30+10+3x

This equation shows that all the prices of the the bag, eraser, and pencils equals $90. So now all we have to do to find the price of a pencil is solve the equation.

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Answer:    

P(x) = 0.50x - 5

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x = number of glasses sold

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