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kompoz [17]
3 years ago
10

Find all solutions to the equation. cos^2x + 2 cos x + 1 = 0

Mathematics
1 answer:
garri49 [273]3 years ago
3 0

Answer:

take a picture of the problem

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What inverse operation would you perform on both sides to solve this equation?
Lesechka [4]

Answer:

c=-24

Step-by-step explanation:

You should perform the inverse of addition and multiplication

The inverse of addition is subtraction so we subtract 4 on both sides:

4-4-c=26-4

Which will be

-c=24

Divide by -1 since the inverse of multiplication is division

-c/-1=24/-1

So the answer will be:

c=-24

5 0
3 years ago
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Can someone answer this question?
Ber [7]
I hope this helps you

5 0
4 years ago
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Ariah Janson
Ivan

Answer:

Root: (8/3,0)

Step-by-step explanation:

7 0
3 years ago
6+y is greater than or equal to 9. what is y
Rufina [12.5K]
6 + y ≥ 9

We are essentially trying to get y by itself, so that we could solve for y

So, subtract 6 from both sides.

y ≥ 9 - 6

Simplify.

y ≥ 3

~Hope I helped!~
7 0
3 years ago
Lines a and b are perpendicular. If the slope of line a is 3, what is the slope of line b?
erma4kov [3.2K]

Answer:

\large\boxed{D.\ -\dfrac{1}{3}}

Step-by-step explanation:

\text{Let}\ k:y=m_1x+b_1\ \text{and}\ l:y=m_2x+b_2,\ \text{then}\\\\l\ ||\ k\iff m_2=m_1\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\-------------------\\\\\text{We have the slope of given line a:}\ m_1=3.\ \text{Therefore the slope of a line b}\\\text{perpendicular to a is: }\\\\m_2=-\dfrac{1}{m_1}\to m_2=-\dfrac{1}{3}

3 0
3 years ago
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