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Jobisdone [24]
3 years ago
10

Reduce the fraction: 7b-14b²/42b²21b

Mathematics
1 answer:
ch4aika [34]3 years ago
7 0

Answer:

(1-2b)/126b^2

Step-by-step explanation:

(7b-14b^2)/(42b^2*21b)

factor out the 7b,

[7b(1-2b)]/882b^3

[7b(1-2b)]/[7b(126b^2)]

cancel out the 7b's

(1-2b)/126b^2

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Please help me for this question
Nezavi [6.7K]

Answer:

Mid-point: (0,-5)

Equation: y=\frac{7}{3}x-5

Step-by-step explanation:

To find the mid-point of AB, simply add up their x and y coordinates and divide by 2 respectively to find their middle point.

(\frac{{x__A}+{x__B}}{2},\frac{{y__A}+{y__B}}{2})

(\frac{{-7}+{7}}{2},\frac{{-2}+{(-8)}}{2})

(0,-5)

To find the perpendicular slope that passes through the mid-point, we need to know the slope between AB first.

Slope of AB: \frac{{y__2}-{y__1}}{{x__2}-{x__1}} = \frac{{-8}-{-2)}}{{7}-{(-7)}} = \frac{-6}{14} = \frac{-3}{7}

Multiplying slopes that are perpendicular with each other always results in -1.

\frac{-3}{7}*m = -1

m=\frac{7}{3}

By the point slope form:

({y}-{y__1})=m({x}-{x__1})

Plug in the coordinates of the mid-point:

({y}-{(-5)})=\frac{7}{3} ({x}-{0})

Equation: y=\frac{7}{3}x-5

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3 years ago
How do you make an equation in slope intercept form for the line of best fit?
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Answer:

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Step-by-step explanation:

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