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Nimfa-mama [501]
2 years ago
14

Find the formula an for the nth term of the geometric sequence satisfying the following conditions: a1 = -2,

Mathematics
1 answer:
Alexeev081 [22]2 years ago
3 0

Answer:

Step-by-step explanation:

a1 = - 2

an = a1 * r^(n - 1)

a6 = -486

-486 = - 2 * r^(6-1)                      Divide by 2

243 = r^5

The largest value that r could be is 3.

4^5 = 1024

(243)^(1/5) = 3

So the general formula

an = -2*(3)^(n - 1)

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Add the following numbers. (-4) + (-9) =
soldi70 [24.7K]

Answer:

-13

Step-by-step explanation:

Adding a negative means that you subtract the number as + (-) = -

This means that the equation is -4-9=-13.

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3 years ago
The side length of a square S can be determined by the formula S equals the square root of a where a represents the area of the
kakasveta [241]

Answer:the side length of a square with the area 0.09 square meter is 0.3 meter.

Step-by-step explanation:

The side length of a square S can be determined by the formula S equals the square root of a where a represents the area of the square. It means that

S = √a

Therefore, the side length of a square with the area 0.09 square meter would be

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7 0
3 years ago
8.EE.8
IceJOKER [234]

For the first system, we have

1 - 3x + 3y = -8

or

-3x + 3y = -9

The second equation, however, tells us

-3x + 3y = 13

but -9 ≠ 13, so this system has no solution.

For the second system, notice that multiplying both sides of

4x - 8y = 6

by 1/2 gives

2x - 4y = 3

which is identical to the other equation in the system. Then all point (x, y) that lie on this line are solutions to the system, meaning there are infinitely many solutions.

4 0
3 years ago
From the set {5, 15, 20}, use substitution to determine which value of x makes the inequality true. x + 10 >25 A . 20 B. 5 C.
Margarita [4]

Answer:

A.

Step-by-step explanation:

If x=5

5 + 10 is less than 25.

If x=15

15+10 is equal to 25

If x =20

20+10 is greater than 25

5 0
3 years ago
Piont P is plotted on the coordinate grid. If point S is 10 units to the left of point P, what are the coordinates of point S?
frozen [14]

Answer:

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Step-by-step explanation:

because p is at (6,4) and its moving to the left so the y wont change but the x will so subtract 10 units from 6 and you get -4.

7 0
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