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gizmo_the_mogwai [7]
3 years ago
10

Evaluate the expression. m×n, when m=13 and n=12

Mathematics
1 answer:
Dmitry_Shevchenko [17]3 years ago
5 0
Mxn
13x12
the answer is 156
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Use the quadratic formula to find the solutions to the quadratic equation below x^2-6x-5=0
Sonja [21]

Answer:

\large\boxed{x=3-\sqrt{14}\ \vee\ x=3+\sqrt{14}}

Step-by-step explanation:

x^2-6x-5=0\qquad\text{add 5 to both sides}\\\\x^2-6x=5\\\\x^2-2(x)(3)=5\qquad\text{add}\ 3^2\ \text{to both sides}\\\\x^2-2(x)(3)+3^2=5+3^2\qquad\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\(x-3)^2=5+9\\\\(x-3)^2=14\to x-3=\pm\sqrt{14}\qquad\text{add 3 to both sides}\\\\x=3-\sqrt{14}\ \vee\ x=3+\sqrt{14}

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3 years ago
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3 years ago
A company has determined that the number of items it sells varies inversely as the price of the item. If 20,000 items can be sol
mestny [16]
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frosja888 [35]

Answer:

Step-by-step explanation:

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katrin [286]
I believe the answer is 3d+6
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3 years ago
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