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mezya [45]
3 years ago
14

Find the 8th term of the geometric sequence. An=-2.5•4^n-1

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
8 0

8th term = 2.5×4^7 = 40960

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Solve the linear system using substitution
levacccp [35]
Hello there!

3x - y = 3
-x + y = 3

We need to solve 3x - y = 3 for y

Let start by adding -3x to both sides

3x - y = 3

3x - 3x - y = 3 - 3x

-y = 3 - 3x
We cannot leave the variable with a negative sign. We must multiply both sides by -1

-y * -1= (3 - 3x)-1

y = 3x - 3

Substitute 3x -3 for y in -x+y=3

-x + y = 3

-x + 3x - 3 = 3

2x - 3 = 3

2x = 3 + 3

2x = 6

x = 6/2

x = 3

Now substitute 3 for x in y=3x -3

y = 3x - 3

y = 3(3) - 3

y= 9 - 3

y= 6

Thus,

The answer is x=3 and y=6

It is always my pleasure to help students like you :)

As always, I am here to help!


7 0
3 years ago
What is the distance of 1.5 to -2 on a number line and how can you show it
user100 [1]

Answer:

The distance is 3.5

Step-by-step explanation:

5 0
3 years ago
phillip watched a beach volleyball game from 1:45 pm to 2:00pm how many degrees did the minute hand turn?
Iteru [2.4K]
The answer is 15 or 1/4

I hope this helps you
6 0
3 years ago
The sum of five consecutive multiples of 4 is 20.Find the smallest integer.
Aloiza [94]

Answer:

The smallest integer is -4.

Step-by-step explanation:

Let the smallest integer be x.

Since the integers are all multiples of 4, they are

=> x, x+4, x+8, x+12 and x+16

=> x + x+4 + x+8 + x+12 + x+16 = 20

=> 5x + 40 = 20

Subtract 40 from both sides of the equation

5x +40 - 40 = 20 - 40

5x = -20

Divide both sides by the coefficient of x(which is 5)

\frac{5x}{5} = \frac{-20}{5}

x = -4

∴ the smallest integer is -4.

Hope this helps!!!

6 0
2 years ago
0.3(4+8)/-0.1+5/(9.2+13.2) HELP ME PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
aleksklad [387]
0.3(4+8)/-0.1+5/(9.2+13.2)= -35.7767857143
8 0
1 year ago
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