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iren [92.7K]
3 years ago
12

What's 21% of 1,300 A 2,601 B 1,027 C 62 D 273

Mathematics
1 answer:
Harrizon [31]3 years ago
8 0
\displaystyle 21\% \cdot 1300 \\ \\ \\  \frac{21}{100}\cdot130 = \\\\ \\  \frac{21}{1}\cdot 13= \\ \\\\ 21\cdot13= \\ \\ \\  273 \\ \\ \\ \text{The answer is D.273}
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Answer:  y = -(9/5)x - 1

Step-by-step explanation:

Rewrite the equation in standard form:  y = (5/9)x+(8/9).  [y=mx+b]

A line perpendicular to this would have a slope that is the negative inverse of the original slope (5/9), which would make it -(9/5).  The y-intercept would also change, but we don't know the value, yet.  For now, we'll use "b" for the y-intercept.  This results in a perpendicular line:

y = -(9/5)x + b

We can calculate b, the y-intercept, by using the point (-5,8) and solving for b.

8 = -(9/5)*(-5) + b

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The line perpendicular to 5x−9y=−8 that passes through the point ​(−5​,8​) is

y = -(9/5)x - 1

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