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Kisachek [45]
3 years ago
13

Write an equation for the nth term of the geometric sequence below: (Equation NEEDS to be written as gn=7(5)^(n-1) or as gn=2/3(

1/4)^(n-1) NOTICE NO SPACES & using ^ to represent an exponent)
Mathematics
1 answer:
andriy [413]3 years ago
8 0

Answer:

You didn't give the geometric sequence in question.

But to find the nth term of a geometric sequence, use the formula

Sn = ar^(n - 1)

Where a is the first term of the sequence

r is the common ratio of the sequence.

Example: To find the nth term of the geometric sequence

1/2, 1/4, 1/8, 1/16, ...

Here, a = 1/2

r = 1/4 ÷ 1/2 = 1/8 ÷ 1/4 = 1/16 ÷ 1/8 = 1/2.

Sn = (1/2)(1/2)^( n - 1)

Apply this method to the sequence you were given, it will be helpful.

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What is the solution to the system of equations?
MariettaO [177]

Answer:

x=-4 y=-1

Step-by-step explanation:

Let's solve your system by substitution.

−3x−8y=20;y=5x+19

Rewrite equations:

y=5x+19;−3x−8y=20

Step: Solve y=5x+19for y:

y=5x+19

Step: Substitute5x+19foryin−3x−8y=20:

−3x−8y=20

−3x−8(5x+19)=20

−43x−152=20(Simplify both sides of the equation)

−43x−152+152=20+152(Add 152 to both sides)

−43x=172

−43x

−43

=

172

−43

(Divide both sides by -43)

x=−4

Step: Substitute−4forxiny=5x+19:

y=5x+19

y=(5)(−4)+19

y=−1(Simplify both sides of the equation)

Answer:

x=−4 and y=−1

 

7 0
3 years ago
What expression represents the phrase eight less than the product of a number and two
JulijaS [17]

Answer:

Step-by-step explanation:

eight less then the product of a number and 2

" the product " means multiply

the product of a number and 2.......2x

eight less....-8

2x - 8 <=== ur expression

5 0
3 years ago
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Is the sequence geometric if so identify the common ratio 1/3, 2/9, 4/27, 8/81, 16/243
docker41 [41]
Yes it is a geometric sequence and the common ratio is 2/3
3 0
3 years ago
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What is the divisor of 2/7
olga2289 [7]

Answer:

the divisor is 7.

4 0
3 years ago
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Please simplify y-4x-(1-6x)+3y+x
andriy [413]

You have to combine like numbers

y-4x-1(1-6x)+3y+x

4y -4x-(1-6x)+x

4y - 4x - 1 + 6x + x

4y + 3x - 1

7 0
3 years ago
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