2 years ago

PLEASE ANSWER AND HELP

Mathematics

1 answer:

ra1l [238]2 years ago

7 0

She must save $91.80.

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blagie [28]

7. 65 + 75 = 140

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Kim and Amy left a 20% tip after having dinner. The amount of the tip was $5. Kim’s dinner cost $15. What was the cost of Amy's

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Step-by-step explanation:

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Which equation is a point slope form equation for line AB ? y+1=32(x−1) y+1=−32(x−1) Four-quadrant Cartesian graph with integer

fenix001 [56]

Answer:

The second option is correct. The point slope form of AB is $y+1=\frac{-3}{2}(x-1)$ .

Step-by-step explanation:

The given points are A(-3,5) and B(1,-1).

Slope of a line is

$m=\frac{y_2-y_1}{x_2-x_1}$

Slope of AB is

$m=\frac{-1-5}{1-(-3)}$

$m=\frac{-6}{4}$

$m=\frac{-3}{2}$

The point slope form of a line is

$y-y_1=m(x-x_1)$

Where, m is slope of the line.

Case 1: The slope of the line is $\frac{-3}{2}$ and the point is (-3,5). The point slope form of AB is

$y-5=\frac{-3}{2}(x+3)$

Case 1: The slope of the line is $\frac{-3}{2}$ and the point is (1,-1). The point slope form of AB is

$y+1=\frac{-3}{2}(x-1)$

Therefore the point slope form of AB is $y+1=\frac{-3}{2}(x-1)$ . Option 2 is correct.

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Helen [10]

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