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3 years ago

IF YOU DON'T KNOW OR NOT SURE DON'T ANSWER!!

Mathematics

2 answers:

Aneli [31]3 years ago

5 0

Answer:

Step-by-step explanation:

because i got 11

yanalaym [24]3 years ago

4 0

Answer:

B-7!

All you have to do is do 5x7!

which is 35.

35+15=50!

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4 years ago

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romanna [79]

Answer:

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Step-by-step explanation:

$x^2-4x-7=0\\\mathrm{Solve\:with\:the\:quadratic\:formula}\\Quadratic\:Equation\:Formula\\\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}\\x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\\mathrm{For\:}\quad a=1,\:b=-4,\:c=-7:\quad x_{1,\:2}=\frac{-\left(-4\right)\pm \sqrt{\left(-4\right)^2-4\cdot \:1\left(-7\right)}}{2\cdot \:1}\\x=\frac{-\left(-4\right)+\sqrt{\left(-4\right)^2-4\cdot \:1\left(-7\right)}}{2\cdot \:1}:\quad 2+\sqrt{11}$

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