3 years ago

What does 2/3x=−1/3x−4 equal to

Mathematics

1 answer:

Misha Larkins [42]3 years ago

4 0

I don’t understand how you worded the question but x=-4 if thats what you are looking for

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The exact value of cos5pi/12 is:

jonny [76]

Step 1: Convert $\frac{5\pi }{12}$ , which is in radians into degrees. To convert it multiply by $\frac{180}{\pi }$

$\frac{5\pi }{12} =\frac{180}{\pi }$

900/12

Step 2: 75 degrees isn't on the unit circle but 45 degrees and 30 degrees is. Since 45 + 30 = 75 you can use the cosine of 45 and 30 to find the exact value

cos45 = $\frac{\sqrt{2} }{2}$

cos30 = $\frac{\sqrt{3} }{2}$

Step 3: Add the cos45 and cos30 to get cos5pi/12

$\frac{\sqrt{2} }{2} +\frac{\sqrt{3} }{2} = \frac{\sqrt{2}+\sqrt{3}}{2}$

Hope this helped!

4 0

3 years ago

PLSSS HELPPP !!!At least how many square feet of canvas are needed to make one cover? (Use

andreyandreev [35.5K]

Answer:

154ft.2 witch is d

Step-by-step explanation:

i just know

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3 years ago

2) Which choice best represents:<br> Divide 8 by N<br> A. 8-N<br> B. N -8

Nataly_w [17]

Answer: A

Step-by-step explanation:

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3 years ago

Simplify x + x + y x y

DedPeter [7]

2x + 2y your welcome!

6 0

3 years ago

Read 2 more answers

Sara bought a new doll at a 20% off sale and saved $12. What was the regular price of the doll?

nordsb [41]

Answer:

regular price = $15

Step-by-step explanation:

Represent the regular price by d. Then the discount was 0.20d, and the sale price was (1 - 0.20)d, or 0.80d, which is $12.

Solving for d, we divide both sides by 0.80:

d = regular price = $15

5 0

2 years ago