3 years ago

-7 written as a fraction is _____

1 answer:

4 0

Answer: -7/1

Explanation: -7/1 is an improper fraction, meaning it’ll just equal to seven. Whenever there’s a one as a denominator, remember, in this case, it’s just -7.

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Find the product of 51 and -2.5.

yaroslaw [1]

The answer is C because 51×-2=-102 and 51×-0.5=-25.5

So it -102+(-25.5) or C

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The first three steps in determining the solution set of the system of equations algebraically are shown in the table. y = −x2 +

lianna [129]

You have a system of equations $\left \{ {{y = -x^2+2x-9} \atop {y =-6x+6}} \right.$ .

1. Substitude right side of second equation into the left side of the first equation: $-6x+6=-x^2+2x-9$ .

2. Solve this equation:
$x^2-2x+9-6x+6=0, \\ x^2-8x+15=0, \\ D=(-8)^2-4\cdot 1\cdot 15=64-60=4, \\ \sqrt{D}=2, \\ x_{1,2}=\dfrac{8\pm 2}{2 } =3,5$ .

3. Find y:
for $x_1=3, y_1=-6\cdot 3+6=-18+6=-12$ ,
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4. The solutions of the system are: (3,-12) and (5,-24).
Answer: Correct choice is A.

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4 years ago

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Graph the equation y=x+7

Otrada [13]

HERE IT IS!!!

I HOPE THIS IS GOOD ENOUGH