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Drupady [299]
4 years ago
12

Frank needs to make a 420 mile trip in 7 hours. Write and solve an equation to determine what speed he should average.

Mathematics
1 answer:
salantis [7]4 years ago
4 0
420\7=60
The answer is 60
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Which choice is equivalent to the quotient shown here when x >= 0?
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4 years ago
Consider the circle of radius 5 centered at (0,0), how do you find an equation of the line tangent to the circle at the point (3
Flauer [41]

\text{We know that the tangent at any point on a circle is perpendicular}\\
\text{to the radius at that point.}\\
\\
\text{so first we find the equation of the line joining (0,0) and (3,4)}\\
\text{and then using the slope, we find the line perperndicular to it at (3,4)}\\
\\
\text{the equation of the line passing through (0,0) and (3,4) is}\\
\\
y-0=\frac{4-0}{3-0}(x-0)

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\\
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\\
\text{we know that the product of the perpendicular lines is }-1. \\
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\\
\text{So the equation of the tangent line has slope }-\frac{3}{4} \text{ and}\\
\text{passing through (3,4). so equation of tangent line is}

y-4=-\frac{3}{4}(x-3)\\
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\Rightarrow y-4=-\frac{3}{4}x+\frac{9}{4}\\
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\Rightarrow y=-\frac{3}{4}x+\frac{9}{4}+4\\
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\Rightarrow y=-\frac{3}{4}x+\frac{9+16}{4}\\
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4 years ago
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loris [4]

Answer:

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Step-by-step explanation:

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3 years ago
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kobusy [5.1K]
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So the ratio would be 12/4
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zzz [600]

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Step-by-step explanation:

4 0
4 years ago
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