2 years ago

-4x - 2y = 14-10x + 7y = -25? I don't know how to solve systems of equations

1 answer:

ki77a [65]2 years ago

5 0

Hope u understand...

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Anvisha [2.4K]

The discriminant of this equation is 49. The solutions for this equation are x=2 and x=- $\frac{1}{3}$
I hope that helps.

7 0

2 years ago

Dmitrij [34]

Answer:

(2 a - 5) (2 a + 5)

Step-by-step explanation:

Factor the following:

4 a^2 - 25

4 a^2 - 25 = (2 a)^2 - 5^2:

(2 a)^2 - 5^2

Factor the difference of two squares. (2 a)^2 - 5^2 = (2 a - 5) (2 a + 5):

Answer: (2 a - 5) (2 a + 5)

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2 years ago

qaws [65]

1980.25836 is the answer

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2 years ago

sergejj [24]

The answer is c I think

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2 years ago

BartSMP [9]

Answer:

you need common denominater so 10/10 - 9/10 =1/10 thats how much of her money she used.

Step-by-step explanation:

4 0

2 years ago