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AVprozaik [17]
4 years ago
7

What is the distance between the points (2,7) and (-8,1)

Mathematics
1 answer:
Ulleksa [173]4 years ago
7 0

Step-by-step explanation:

Given points ( 2 , 7) and ( - 8 , 1 )

Distance between two points

\sqrt{(x2 - x1 )+( y2 - y1)}

\sqrt{(2  + 8) + (7 - 1)}

\sqrt{10 + 6}

\sqrt{16}

\sqrt {4}^{2}

Therefore distance between two points is 4 units.

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What equation is the inverse of y=2x^2-8?
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Step-by-step explanation:

To get the inverse, swap the x- and y-variables, then solve for y. We should have the equation: x = 2y^2 - 8

Solving for y:    

y = 2x^{2} - 8    because  y + 8 = 2x^{2} or  x =\sqrt\frac{y +  8}{2}

So on interchanging the variable, we get the equation:

x = 2y^2 - 8

x + 8 = 2y^2

y = \sqrt\frac{x + 8}{2}

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4 years ago
2(5m-8)+3(m+2)=12+4(2m-1)
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Answer:

3.6

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2(5m-8)+3(m+2)=12+4(2m-1)

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3 years ago
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