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anygoal [31]
3 years ago
7

2x+8=80 please help I am in a test rn helppppp!!!!!

Mathematics
2 answers:
tresset_1 [31]3 years ago
7 0

Answer:

36

Step-by-step explanation:

Start off by subtracting 8 from each side.

Once you do that your equation will now look like this--->2x=72

To get ride of the 2 you have to divide by 2 on each side.

2x=72

/2  /2

x=36

I hope this helps, and have a great day! :)

n200080 [17]3 years ago
3 0

Answer:

x=36

Step-by-step explanation:

first subtract 8 into 80, then divide it with two and you will find the answer for x

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Answer:

Using trigonometric ratio:

\sec \theta = \frac{1}{\cos \theta}

\tan \theta = \frac{\sin \theta}{\cos \theta}

From the given statement:

\cos \theta = -\frac{4}{5} and sin < 0

⇒\theta lies in the 3rd quadrant.

then;

\sec \theta = \frac{1}{-\frac{4}{5}} = -\frac{5}{4}

Using trigonometry identities:

\sin \theta = \pm \sqrt{1-\cos^2 \theta}

Substitute the given values we have;

\sin \theta = \pm\sqrt{1-(\frac{-4}{5})^2 } =\pm\sqrt{1-\frac{16}{25}} =\pm\sqrt{\frac{25-16}{25}} =\pm \sqrt{\frac{9}{25} } = \pm\frac{3}{5}

Since, sin < 0

⇒\sin \theta = -\frac{3}{5}

now, find \tan \theta:

\tan \theta = \frac{\sin \theta}{\cos \theta}

Substitute the given values we have;

\tan \theta = \frac{-\frac{3}{5} }{-\frac{4}{5} } = \frac{3}{5}\times \frac{5}{4} = \frac{3}{4}

Therefore, the exact value of:

(a)

\sec \theta =-\frac{5}{4}

(b)

\tan \theta= \frac{3}{4}

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4 years ago
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3 years ago
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DerKrebs [107]

Answer:

1. D y = 8

2. C y = −8

Step-by-step explanation:

1.Both points have y-coordinate 8, so the line is horizontal.

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3 years ago
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answer: false

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