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rosijanka [135]

3 years ago

7

3. Find x, y, u, and v satisfying the system of four equations: x + 7y + 3v + 5u = 16 8x + 4y + 6v + 2u = -16 2x + 6y + 4v + 8u

= 16 5x + 3y + 7v + u = 16

1 answer:

Sophie [7]3 years ago

8 0

Answer:356

Step-by-step explanation:

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If $1600 earned simple interest of $56.24 in 2 months, what was the simple interest rate? The simple interest rate is % (Do not

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Step-by-step explanation:

We know that for principal amount P , time period T and rate of interest $R\%$ , simple interest is given by $S.I. = \frac{P\times R\times T}{100}$ .

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2 years ago

Which of the following statements is true?

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2 years ago

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bekas [8.4K]

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Step-by-step explanation:

By definition, we know that:

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$cos(\theta)=\±\sqrt{1-(\frac{6}{11})^2}\\\\cos(\theta)=\±\sqrt{\frac{85}{121}}\\\\ cos(\theta)=\±\frac{\sqrt{85}}{11}$

As $sec\theta$ then $cos\theta$ :

$cos(\theta)=-\frac{\sqrt{85}}{11}$

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3 years ago

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