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3 years ago

11

Y'all - please help I have been on this question for like 20 mins

1 answer:

AURORKA [14]3 years ago

5 0

Answer:

d

Step-by-step explanation:

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-2x-y=-9<br> 5x-2y=18<br> substitution

KIM [24]

$-2x-y=-9 \\
5x-2y=18 \\ \\
\hbox{solve the first equation for y:} \\
-2x-y=-9 \ \ \ |+2x \\
-y=-9+2x \ \ \ |\times (-1) \\
y=9-2x \\ \\
\hbox{substitute 9-2x for y in the second equation:} \\
5x-2(9-2x)=18 \\
5x-18+4x=18 \\
9x-18=18 \ \ \ |\div 9 \\
x-2=2 \ \ \ |+2 \\
x=4 \\ \\
y=9-2x=9-2 \times 4=9-8=1 \\ \\
\boxed{(x,y)=(4,1)}$

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3 years ago

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How much principal must be deposited to earn $1000 simple interest in 2 years at a rate of 5%

Murrr4er [49]

Answer:

1100 brainliest please

Step-by-step explanation:

1000×2×0.05=100

1000+100=110

4 0

3 years ago

the school band will sell pizzas to raise money for new uniforms the supplier charges $100 plus $4 per Pizza the band members se

VladimirAG [237]

100+4x =7x

100=3x

100/3 = 33.33

x = 33.33 round up to 34

they need to sell 34 pizzas to make a profit

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denis23 [38]

I hope this helps you

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dybincka [34]

Answer:

X must be negative

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Step-by-step explanation:

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