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3 years ago

Plz need help like now plz

Mathematics

1 answer:

nika2105 [10]3 years ago

7 0

T) -7x+10y=20. M) -3x+y=-2 - ,
2(8x-5y)=35(2) -1(x+y)=-6(-)

-7x+10y=20. -3x+y=-2
16x-10y=70. -x-y=6

9x=90. -4x=4
[x=10] [x= -1]

-7(10)+10y=20. -3(-1)+y=-2
-70+10y=20. 3+y=-2
10y=90. [y= -5]
[y=9]

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3 years ago

Write a quadratic function for each graph described.

user100 [1]

Answer:

$y=2x^2-\frac{4}{3}x-\frac{10}{3}$

Step-by-step explanation:

we know that

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we can write the equation of the parabola as

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3 years ago

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adelina 88 [10]

Answer:

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3 years ago

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alexandr402 [8]

Answer:

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Step-by-step explanation:

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3 years ago

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schepotkina [342]

Answer:

7 cards.

Step-by-step explanation:

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so, if you buy 2 more cards, that would be 18 dollars so 20.5-18=2.5

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He still hzs 2.5 dollars left

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3 years ago