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3 years ago

Without graphing or solving either system of equations explain how you know what the solution to the system is.

Mathematics

1 answer:

Sonbull [250]3 years ago

3 0

x = 5

y = -1

Step-by-step explanation:

from second equation,

y = -2 + 1
y = -1

by putting the value of y in first equation

y = -x + 4
-1 = -x + 4
-x = -1 -4
-x = -5
x = 5

x = 5 and y = -1

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2 years ago

Find out the answers to this

meriva

Answer:

$\tan \theta = - \frac{1}{5} = - 0.2$

$\cos \theta = 0.98$

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Step-by-step explanation:

It is given that $\cot \theta = - 5$ and $\theta$ is in the fourth quadrant.

So, only $\cos \theta$ will have positive value and $\sin \theta$ , $\tan \theta$ will have negative value.

Now, $\cot \theta = - 5$

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We know, that $\sec^{2} \theta - \tan^{2} \theta = 1$

⇒ $\sec \theta = \sqrt{1 + \tan^{2} \theta } = \sqrt{1 + (- \frac{1}{5} )^{2} } = 1.019$

{Since, $\cos \theta$ is positive then $\sec \theta$ will also be positive}

⇒ $\cos \theta = \frac{1}{\sec \theta} = \frac{1}{1.0198} = 0.98$ (Answer)

We know, that $\csc^{2} \theta - \cot^{2} \theta = 1$

⇒ $\csc \theta = - \sqrt{1 + \cot^{2} \theta } = - \sqrt{1 + (- 5 )^{2} } = - 5.099$

{Since, $\sin \theta$ is negative then $\csc \theta$ will also be negative}

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3 years ago

What is the value of y?

icang [17]

Y= 5.91 yup that’s the answer

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