2 years ago

A system of equations that has an infinite number of solutions is called a(n) ______ system of equations.

1 answer:

8 0

System of linear equations
A set of two or more linear equations containing two or more variables.

2x + 3y = −1
x − 3y = 4

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Use synthetic substitution to evaluate the polynomial for the given value x = -3. P(x) = 2x2 + 7x - 1

kaheart [24]

I'm assuming that is 2x squared, and not 2 multiplied by 2, as a given question usually wouldn't come in such a silly format. I do wish people would start using (2x^2) or (2x²), though.

Just substitute the value of x (-3) in to the equation to find the value of y, or P(x).

2(-3)² + 7(-3) - 1 = -4

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3 years ago

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2 years ago

One leg of a right triangle measures 8 units and the hypotenuse measures 12 units. The perimeter of the triangle is irrational.

Tpy6a [65]

Answer:

TRUE

Step-by-step explanation:

Length of other leg $= \sqrt {12^2 - 8^2} \\= \sqrt {144 -64} \\= \sqrt {80} \\= 4\sqrt {5} \\$