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ghari112345
02.07.2019 •
Mathematics
Find the slope of the line passing through the points (-1,3) and (4,-7
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Ответ:
You use the slope formula:
m =![\frac{y_{2}-y_{1} }{x_{2}-x_{1}}](/tpl/images/0040/5107/ce91f.png)
m is the slope. Plug in the points.
m =![\frac{-7 - 3}{4 - (-1)}](/tpl/images/0040/5107/64169.png)
m =![\frac{-7 - 3}{4+1}](/tpl/images/0040/5107/02872.png)
m =![\frac{-10}{5}](/tpl/images/0040/5107/2a6e8.png)
m = -2
Ответ:
You will pay $13.52 for this shirt.
Step-by-step explanation: 0.9435
Since the tax is 7.5%, you have to multiply 12.58 by 7.5% to find the amount of money paid as tax.
7.5% = 0.075
12.58 x 0.075 = 0.9435
Since we are dealing with money we have to round to the nearest hundredth -- 0.9435 = 0.94
Then to find the final cost of the shirt, we have to add 12.58 and 0.94 to get $13.52.