All categories

3 years ago

PLEASE HELP!! What are the explicit equation and domain for a geometric sequence with the first term of 3 a second term of -9?

Mathematics

2 answers:

frutty [35]3 years ago

4 0

Answer:

The correct answer is c.

Dmitriy789 [7]3 years ago

3 0

Answer:

the third option

Step-by-step explanation:

a1 = 3

a2 = -9

as a geometric sequence every sequence item is created by multiplying a constant factor with the previous item.

what do I need to multiply 3 with to get -9 ? right, -3.

so, the first 2 options are out, because they multiply with -12.

and we can accept only n>=1, because there is no a0. it starts with a1.

ah only the third option is right.

You might be interested in

solong [7]

Answer:

Warrior WiFi is better because it costs 167.50 for 175 texts.

Step-by-step explanation:

2x175 = 350 + 20 = 370

0.50x175 = 87.5 + 80 = 167.5

4 0

2 years ago

Which of the following are the zeros of the function y= 3(x-a)(x+b) in terms of a and b?

frosja888 [35]

The correct answer is option 2.

3 = 0

x - a = 0

x = a

x + b = 0

x = -b

We do not multiply any of these values by 3 because in a way, 3 is acting as another "zero" of the equation. Though, as shown above, it does not equal 0, it still does not apply to any of the other equations solved above.

Hope this helps!! :)

7 0

4 years ago

Which equations are correct? Select each correct answer.

Juliette [100K]

Answer:

Equations 2 and 3 are correct

3 0

3 years ago

Read 2 more answers

Please help with this Geometry worksheet.

Marianna [84]

Answer:

1. x= 122(answer on pdf=n)

2. x=38(answer on pdf=s)

7. x=26(answer on pdf=l)

8. x=14(answer on pdf=p)

13. x=22(answer on pdf=b)

14. x=12(answer on pdf=k)

Step-by-step explanation:

Supplementary angle for number 1 so 58+x=180

180-58=x=122

Number 2 is a complimentary angle so 52+x=90

90-52=x=38

Number 7 is a complimentary angle so 64+x=90

90-64=x=26

Number 8 it states that the angles are equal so 4x=56

56/4=x=14

Number 13 is a supplementary angle so (6x-2)+50=180

(180-50+2)/6=x=22

132/6=x=22

Number 14 is complimentary so 8x-6=90

96/8=x=12

4 0

4 years ago

I have no clue how to solve this and it’s really stressing me out! Can anyone help?

marin [14]

Answer:

302.02 units²

Step-by-step explanation:

To do this, we can first solve for the height of the trapezoid. We can do this using sin:

sin 70= $\frac{x}{14}$

14· sin 70≈13.16

Now, we can solve for the base of the small triangle on the right by:

cos 70= $\frac{x}{14}$

14 · cos 70 ≈4.79

Now, find the area of the triangle using $V= \frac{1}{2} bh$ :

V= (4.79)(13.16)/2≈30.86

Now, we can find the area of the rectangle in the middle by:

15· 13.16 (the height)= 197.4

Now, we need to solve for the triangle on the left. We will need to first find the base by subtracting the bases of the other figures from 31:

31-4.79-15= 11.21

Now, find the area of the triangle:

V=(11.21)(13.16)/2= 73.76

Add all of the areas, giving you:

73.76+30.86+197.4= 302.02 units²

6 0

3 years ago