3 years ago

−9.3=d−3.4 Please Help Mr. hacker

Mathematics

2 answers:

Lubov Fominskaja [6]3 years ago

5 0

Answer:

d = -5.9

Step-by-step explanation:

Alecsey [184]3 years ago

4 0

Answer:

d=-5.9

Step-by-step explanation:

I hoped this helped in your desperate timez

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Find exact value of cos

mylen [45]

<h3>Answer: Choice B. $\frac{\sqrt{91}}{10}$ </h3>

Work Shown:

$\sin^2 \theta + \cos^2 \theta = 1\\\\\left(\frac{3}{10}\right)^2 + \cos^2 \theta = 1\\\\\frac{9}{100} + \cos^2 \theta = 1\\\\\cos^2 \theta = 1 - \frac{9}{100}\\\\\cos^2 \theta = \frac{100}{100}-\frac{9}{100}\\\\\cos^2 \theta = \frac{91}{100}\\\\\cos \theta = \sqrt{\frac{91}{100}} \ \text{ cosine positive in Q1}\\\\\cos \theta = \frac{\sqrt{91}}{\sqrt{100}}\\\\\cos \theta = \frac{\sqrt{91}}{10}\\\\$