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Paha777 [63]
4 years ago
13

(50 Points)

Mathematics
2 answers:
yuradex [85]4 years ago
4 0

A, B and D are your answers according to e2020


Tom [10]4 years ago
3 0

Answer:

<u>A) (-1,1)</u>

<u>B) (4,-2)</u>

<u>D) (2,-2)</u>

Step-by-step explanation:

Have a Great Day ✌

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Which has the same difference as 12-6
Mrac [35]
12 - 6 = 6
18 - 12 = 6
24 - 18 = 6 
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An electronics store makes a profit of $30 for every portable DVD player sold and $60 for every DVD recorder sold. The manager’s
USPshnik [31]
It's c or d but leaning more to c
6 0
4 years ago
Read 2 more answers
Write the product as a sum: 14cos(39x)sin(19x)
charle [14.2K]

Recall that

sin(<em>a</em> + <em>b</em>) = sin(<em>a</em>) cos(<em>b</em>) + cos(<em>a</em>) sin(<em>b</em>)

sin(<em>a</em> - <em>b</em>) = sin(<em>a</em>) cos(<em>b</em>) - cos(<em>a</em>) sin(<em>b</em>)

Adding these together gives

sin(<em>a</em> + <em>b</em>) + sin(<em>a</em> - <em>b</em>) = 2 sin(<em>a</em>) cos(<em>b</em>)

To get 14 cos(39<em>x</em>) sin(19<em>x</em>) on the right side, multiply both sides by 7 and replace <em>a</em> = 19<em>x</em> and <em>b</em> = 39<em>x</em> :

7 (sin(19<em>x</em> + 39<em>x</em>) + sin(19<em>x</em> - 39<em>x</em>)) = 14 cos(39<em>x</em>) sin(19<em>x</em>)

7 (sin(58<em>x</em>) + sin(-20<em>x</em>)) = 14 cos(39<em>x</em>) sin(19<em>x</em>)

7 (sin(58<em>x</em>) - sin(20<em>x</em>)) = 14 cos(39<em>x</em>) sin(19<em>x</em>)

4 0
3 years ago
What is the y-intercept of the line whose equation is y = x - 3?
zzz [600]
Because you are using the format y = mx +c the c value is the y offset.

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4 0
4 years ago
Read 2 more answers
In the interval 0° &lt; x &lt; 360°, find the values of x for which sin x = 0.6691 Give your answer tot he nearest degree
Neporo4naja [7]

Answer:

x are 42 and 138degees

Step-by-step explanation:

Given the expression  sin x = 0.6691

sin x = 0.6691

Take the sin inverse of both sides

sin⁻¹(sin x) =  sin⁻¹(0.6691 )

x = sin⁻¹(0.6691 )

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x = 180 -theta

x = 180 - 42

x = 138degrees

Hence the value of x are 42 and 138degees

8 0
3 years ago
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