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scoundrel [369]
3 years ago
13

Is this the correct answer?

Mathematics
1 answer:
Advocard [28]3 years ago
6 0
30kx-6kx=8
24kx=8
x=8/(24k)
x=1/(3k)
so the answer should actually be D
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Which statements correctly describe the cosine and sine functions? Check all that apply.
VMariaS [17]

Answers:

B: <em>The sine function increases on (0°, 90°) and (270°, 360°).</em>

C: <em>The cosine function decreases on (0°, 180°).</em>

E: <em>Both the cosine and sine functions have a maximum value of 1.</em>

F: <em>Both the cosine and sine functions are periodic.</em>

4 0
3 years ago
Determine the equation of the circle graphed below. <br><br> ( please help me )
Brums [2.3K]

Answer:

Equation : \\(x+3)^2 + ( y -2)^2 = 36

Step-by-step explanation:

For standard form the circle's equation we need the centre of the circle and the radius.

Step 1: <em><u>Find the centre</u></em>

If the centre is not given find the end points of the diameter

and then find the mid point.

Let the end points of the diameter be : ( - 3 , 8 ) and ( -3 , -4 )

The mid-point of the diameter is :

                        Mid-point = (\frac{-3 + - 3}{2}, \frac{-4+8}{2}) =  (-3, 2)

Therefore, centre of the circle = ( -3 , 2 )

Step 2 : <u>Find radius</u>

<u></u>Radius = \frac{Diameter }{2}<u></u>

Diameter is the distance between the end points ( -3 , 8) and ( -3 , -4 )

That is ,

 Diameter = \sqrt{(-3-(-3))^2 + ( -4 -8)^2}\\

                 = \sqrt{(-3 + 3)^2 + (-12)^2}\\\\=\sqrt{0 + 144}\\\\=12

Therefore ,

       Radius = \frac{12}{2} = 6

Step 3 : <u>Equation of the circle</u>

Standard equation of the circle with centre ( h ,k )

and radius ,r is :

       (x - h)^2+(y -k)^2 = r^2

Therefore, the equation of the circle with centre ( -3, 2)

and radius = 6 is :

    (x - (-3))^2 +  (y - 2)^2 = 6^2\\\\(x + 3)^2 + (y - 2)^2 = 36

5 0
2 years ago
Ray BD is the angle bisector of Given that D<br> Om m-ABD=42<br> m-ABD=21<br> Om ABD=96"
djverab [1.8K]
Om ABD = 96” is the answer
6 0
3 years ago
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lianna [129]

Answer:

D. x + 2y² - 7

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it because it has 3 terms

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Margarita [4]
67912 rounded to the nearest 10th is 67910
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