3 years ago

Please help I need to have this in by tonight

Mathematics

2 answers:

lbvjy [14]3 years ago

7 0

The answer is -0.045y

Daniel [21]3 years ago

4 0

Hi, I’ll gladly be happy to help, but could you type out the problem instead because the photo is too blurry for me to see.

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HACTEHA [7]

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Step-by-step explanation:

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Alex17521 [72]

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3 years ago

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Answer:

D. 160 pieces of pizza!

Step-by-step explanation:

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3 years ago

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SOVA2 [1]

$x;\ y-the\ numbers\\\\ \left\{\begin{array}{ccc}xy=25\\x+y=-10&\to x=-10-y\end{array}\right\\\\subtitute:\\(-10-y)y=25\\(-10)(y)-y(y)=25\\-10y-y^2=25\\-y^2-10y-25=0\ \ \ \ |change\ the\ signs\\y^2+10y+25=0\\y^2+5y+5y+25=0\\y(y+5)+5(y+5)=0\\(y+5)(y+5)=0\\(y+5)^2=0\iff y+5=0\to \boxed{y=-5}\\\\subtitute\ the\ value\ of\ y\ to\ the\ equation\ x=-10-y\\x=-10-(-5)\\x=-10+5\\\boxed{x=-5}\\\\Answer:\boxed{-5\ and\ -5}$

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postnew [5]

I’m not sure maybe D

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