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DerKrebs [107]
3 years ago
5

What is the next term of the geometric sequence? 189,63,21

Mathematics
2 answers:
Temka [501]3 years ago
8 0

Answer:

7

Step-by-step explanation:

189-63=126

63-21=42

126/3=42

42/3=14

21-14=

7

Vinvika [58]3 years ago
7 0

Answer:

7

Step-by-step explanation:

Common ratio of 3 so 21/3 = 7

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sergejj [24]

Answer:

C. Radius or diameter must be known.

Step-by-step explanation:

The radius or diameter must be known so you can use the formula.

Hope this helps!

4 0
1 year ago
Worth 20 points!!<br> Tell me an x, y ordered pair that is a solution for this equation. Y = 5x - 2
NISA [10]
These are three solutions
(0,-2)
(1,3)
(2,8)
8 0
2 years ago
2. Given the equation of a circle in standard form, identify the center, radius, and graph the circle.
Varvara68 [4.7K]

Answer:

Center: ( -1 , 2 )

Radius: 6

Step-by-step explanation:

The equation for a circle is given as follow:

(x-h)^{2} +(y-k)^{2} =r^{2}

Where,

the Center is: ( h , k ) (note that the signs of the number are different)

and the radius is: r

So if we compare the original circle equation to the equation in the question we can see that:

(x+1)^{2} +(y-2)^{2} =36

the Center is: (-1,2)

and the radius is: \sqrt{36} = 6

2. To draw the graph find points that lay on the circle, it's better to take the values of x and y from the Center:

first sub y=2 in the equation to find the values for x:

(x+1)^{2} +(y-2)^{2} =36

(x+1)^{2} +(2-2)^{2} =36

(x+1)^{2} +(0)^{2} =36

(x+1)^{2}  =36

x+1 =±\sqrt{36}

x=6-1    AND    x=-6-1

x=5          AND    x=-7

  • The points are A(5,2)  and  B(-7,2)

second sub x= -1 in the equation to find the values for y:

(x+1)^{2} +(y-2)^{2} =36

(-1+1)^{2} +(y-2)^{2} =36

(0)^{2} +(y-2)^{2} =36

(y-2)^{2} =36

y-2=±\sqrt{36}

y=6+2    AND    y=-6+2

y=8          AND    y=-4

  • The points are D(-1,8)  and  E(-1,-4)      

After finding the points write them in the graph and match them together to get the like the circle in the picture below:

8 0
3 years ago
Solve the equation: .69x+4.32=.46x+3.4<br><br> please show work or explain how to do it.
defon
0.69x+4.32=0.46x+3.4
              -3.4                   -3.4  
____________________
0.69x+0.92=0.46x
-0.69x           -0.69x
______________
0.92=-0.23
multiply by -100/23   multiply by -100/23
x=-4
6 0
3 years ago
Read 2 more answers
What is the sum of 4n² + 2n+ 12
Alex

Answer:

hope this helps <33

Step-by-step explanation:

2(2n^2+n=6)

6 0
3 years ago
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