3 years ago

Can someone please help me ill mark you brainliest!!! !!!!

Mathematics

1 answer:

Aleksandr-060686 [28]3 years ago

5 0

Answer:

A and B

Step-by-step explanation:

It is an acute equilateral triangle

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2 years ago

What two numbers add to 9 and multiply to -70

Alborosie

X, y - the numbers

The numbers add to 9 and multiply to -70.
$x+y=9 \\
xy=-70 \\ \\
y=9-x \\
xy=-70 \\ \\
\hbox{substitute 9-x for y in the second equation:} \\
x(9-x)=-70 \\
9x-x^2=-70 \\
-x^2+9x+70=0 \\
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(-x-5)(x-14)=0 \\
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y=9-x \\
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y=14 \ \lor \ y=-5 \\ \\
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3 years ago