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2 years ago

10

FOR CHANCE TO BE MARKED AS BRAINLIEST PLEASE EXPLAIN HOW YOU GOT YOUR ANSWER!

1 answer:

Vsevolod [243]2 years ago

5 0

Isn't it already telling you how much each oz of detergent is?

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A rivers current flows at a rate of 2.4 miles per hour. how many feet per second is this

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3 years ago

HELP ASAP PLEASE!!!

grigory [225]

The quadratic fomula:

$ax^2+bx+c=0\\\\\Delta=b^2-4ac\\\\If\ \Delta0,\ then\ \boxed{TWO\ SOLUTIONS:\ x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ x_2=\dfrac{-b+\sqrt\Delta}{2a}}-----------------------------------------------$

We have the equation:

$2x^2-7x-21=0\\\\a=2,\ b=-7,\ c=-21\\\\\Delta=(-7)^2-4(2)(-21)=49+168=217 > 0\\\\x_1=\dfrac{-(-7)-\sqrt{217}}{2(2)}=\dfrac{7-\sqrt{217}}{4}\approx-1.93\\\\x_2=\dfrac{-(-7)+\sqrt{217}}{(2)(2)}=\dfrac{7+\sqrt{217}}{4}\approx5.43\\\\Answer:\ \boxed{\boxed{2.\ -1.93\ and\ 5.43}}$

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2 years ago