3 years ago

Find the radius of a circle with an area of 615.75 square kilometers

Mathematics

1 answer:

SVETLANKA909090 [29]3 years ago

8 0

Answer:

13.999975443466645809607317476264924904625964880398

Step-by-step explanation:

That's only 50 digits

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In DEF, C is the centroid.<br> If DM = 9, find DC and CM

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3 years ago

Convert 375 minutes to hours?

Makovka662 [10]

Answer:

6.25 hours

Step-by-step explanation:

As we know that,

1 hour = 60 minutes

⇒ $1 \ minute = \frac{1}{60} \ hour$

⇒ $375 \ minutes =375\times \frac{1}{60} \ hours$

⇒ 375 mintes = 6.25 hours

Thus, 375 mintes = 6.25 hours

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3 years ago

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jeka94

Answer:

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Step-by-step explanation:

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3 years ago

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tekilochka [14]

Answer:

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Step-by-step explanation:

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3 years ago

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Determine the values of the parameter s for which the system has a unique solution, and describe the solution. sx 1 minus 2 sx

JulijaS [17]

Note: The equations written in this questions are not appropriately expressed, however, i will work with hypothetical equations that will enable you to solve any problems of this kind.

Answer:

For the system of equations to be unique, s can take all values except 2 and -2

Step-by-step explanation:

$2sx_{1} + 4x_{2} = -3\\2x_{1} + sx_{2} = 4$

$\left[\begin{array}{ccc}2s&4\\2&s\end{array}\right] \left[\begin{array}{ccc}x_{1} \\x_{2} \end{array}\right] = \left[\begin{array}{ccc}-3 \\6 \end{array}\right]$

For the system to have a unique solution, $\begin{vmatrix} 2s & 4 \\ 2 & s \end{vmatrix} \neq 0$

$2s^{2} -8 \neq 0\\2s^{2}\neq 8\\s^{2}\neq 4\\s \neq 2 or -2$

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4 years ago