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pickupchik [31]
3 years ago
10

Please help me with this one too lol.

Mathematics
1 answer:
In-s [12.5K]3 years ago
5 0

Answer:

b

Step-by-step explanation:

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Find the general solution and find the specific solutions over the interval [0,4pi]
Natasha2012 [34]

Answer:

Isolate the angle 2x, by following the reverse "order of operations".

Step-by-step explanation:

Explanation:

Step 1: Add 1 to both sides:

2

cos

2

(

2

x

)

=

1

Step 2: Divide both sides by 2:

cos

2

(

2

x

)

=

1

2

Step 3: Take the square root of both sides:

cos

(

2

x

)

=

√

2

2

or

cos

(

2

x

)

=

−

√

2

2

(don't forget the positive and negative solutions!)

Step 4: Use inverse of cosine to find the angles:

2

x

=

cos

−

1

(

√

2

2

)

or

2

x

=

cos

−

1

(

−

√

2

2

)

Step 5: Find angles that work:

2

x

=

π

4

or

2

x

=

7

π

4

or

2

x

=

3

π

4

or

2

x

=

5

π

4

Step 6: Solve for x:

x

=

π

8

,

7

π

8

,

3

π

8

,

5

π

8

or .785, 5.5, 2.36, 3.93

(decimal approximations are seen on the graph below)

5 0
3 years ago
Can somebody help n explain ​
djverab [1.8K]

Answer:

B

Step-by-step explanation:

6 0
4 years ago
Read 2 more answers
The area of the yard was 6,756 square yards. The width of the yard was 12 yards. What was the length of the yard?
Igoryamba
<h2>The length of the yard was 563 yards.</h2>

Step-by-step explanation:

Given,

The area of the yard = 6,756 square yards and

The width of the yard (b) = 12 yards

To find, the length of the yard (l) = ?

We know that,

Area of the rectangle =  Length(l) × Breadth(b)

⇒ l × 12 = 6,756

⇒ l =\dfrac{6,756}{12}

⇒ l = 563 yards

Thus, the length of the yard was 563 yards.

8 0
4 years ago
Read 2 more answers
Single digits numbers of 420
yaroslaw [1]
The singles digit is 0.

The 2 is the tens digit and the 4 is the hundreds digit.
6 0
3 years ago
PLEASE HELPPP Will award brainliest!!!
Snowcat [4.5K]

The "line of best fit" is the result of a linear regression computation. If you have done that, you already know its equation.

If you have "eye-balled" the line into place, then you have to figure out its equation from points you read on the graph. We take a couple of the points to be ... (2001, 1700) and (2010, 2450)

The line through these points will have the equation

... y = (2450 -1700)/(2010 -2001)(x -2001) +1700

... y = (250/3)(x -2001) +1700

Putting x=2013 into this equation, we get ...

... y = (250/3)(2013 -2001) +1700

... = (250/3)(12) +1700

... y = 2700

The population is predicted to be 2700 in 2013.

_____

Had you drawn your graph with a vertical grid line at 2013, you could have read the number from the graph.

4 0
4 years ago
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