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yanalaym [24]
2 years ago
5

NEED HELP ASAP, TEST!! Solve the equation 2 cos (x) +1=0,0 ≤ x ≤ 2pi. Show all of your work.​

Mathematics
1 answer:
Viefleur [7K]2 years ago
3 0

Answer: cos(x) = -\frac{1}{2}

Work:

1. Subtract 1 from both sides

2cos(x)+1-1=0-1

2. Simplify

2cos(x)=-1

3. Divide both sides by 2

\frac{2cos(x)}{2}=\frac{-1}{2}

4. Simplify

cos(x)=-\frac{1}{2}

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sweet [91]

Answer:

c x<15/2

Step-by-step explanation:

first you write your equation

then you add 8 to the right of the equation

then you divide 2x on both sides of the equation

then you will get you answer

then you graph your answer

when you graph it you will have a open circle

then last you will draw a line going left.

6 0
3 years ago
Which measurements could NOT represent the side lengths of a right triangle? A. 12 in, 35 in, 37 in B. 10 in, 24 in, 26 in C. 4
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<h2>Answer:</h2>

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<h2>Explanation: </h2>

<h3>❗ The answer is C, since 6+4 is 10, which means that it is not a right triangle.</h3>

 

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4 0
3 years ago
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Your answer is in the graph below. I hope this helps
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4 0
2 years ago
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Solve the inequality 8(x - 2) + 9 &lt; 3(x - 1) + 5x​
zvonat [6]

Answer:

no solution

Step-by-step explanation:

4 0
3 years ago
How can i show my work for 2x-4= -10+x
Anuta_ua [19.1K]
Let me help you with that :)

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2x - x = - 10 + 4 (we calculate this)

x = -6

And that is the answer; x = - 6 :)


8 0
3 years ago
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