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LenaWriter [7]
3 years ago
9

Is this an arthimatic sequence ? 10,20,40,80

Mathematics
1 answer:
elena55 [62]3 years ago
7 0

An arithmetic sequence has a common difference between each term in the series. A geometric sequence has a common ratio between each term in the series.


First, let's determine the rate of change between each term.

10, 20 = multiplied by 2

20, 40 = multiplied by 2

40, 80 = multiplied by 2


The terms appear to have a common ratio of 2, making this a geometric sequence. Therefore, this is NOT an arithmetic sequence.

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Explain how to solve 4|3x-1|+1=8​
denis-greek [22]

4|3x - 1| + 1 = 8

4|3x - 1| = 8 - 1

4|3x - 1| = 7

|3x - 1| = 7/4

Now lets think, we have 3x - 1 in module, so either its 7/4 or -7/4, we will have 7/4 at the end because of it, so we may have 2 solutions in this case:

3x - 1 = 7/4

and

3x - 1 = -7/4

So let's see:

3x - 1 = 7/4

3x = 7/4 + 1

3x = 11/4

x = 11/12

3x - 1 = -7/4

3x = -7/4 + 1

3x = -3/4

x = -1/4

So we have two possible answers, x = 11/2 and x = -1/4

8 0
3 years ago
Hello! If someone could help me answer this it would be appreciated! <3
Leona [35]

Answers:

  • In the top row, the first and third polygons are regular polygons.
  • In the bottom row, only the first polygon is a regular polygon

============================================================

Explanation:

A regular polygon must have all sides of equal length. Also, all angles must be the same measure. This applies to the equilateral triangle in the upper left corner, and the square in the upper right corner. Each angle of the square is 90 degrees even though your teacher didn't use right angle markers.

The middle figure in the top row is not a regular polygon because the sides are not all the same length. Also, the angles are different.

--------------------

In the bottom row, only the first figure is a regular polygon for similar reasons mentioned earlier. The second figure is not a regular polygon because this figure is concave. Only convex polygons can be regular.

The third figure in the bottom row is not regular because one side is longer than the others.

3 0
2 years ago
A circle is represented by the equation below: (x + 8)2 + (y − 3)2 = 100 Which statement is true?
ss7ja [257]

Answer:

The circle is centered at (-8,3) and has a diameter of 20 units

Step-by-step explanation:

we know that

The equation of a circle in center radius form is equal to

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

where

(h,k) is the center of the circle

r is the radius of the circle

In this problem we have

(x+8)^2+(y-3)^2=100

so

The center is the point (-8,3)

The radius is r=\sqrt{100}=10\ units

so

The diameter is two times the radius

D=2(10)=20\ units

therefore

The circle is centered at (-8,3) and has a diameter of 20 units

8 0
3 years ago
Read 2 more answers
X+4+3(x)=x-8<br> Answer this for me
Grace [21]

Step-by-step explanation:

3x= (-8) -4

x=(-12)/3

x= -4

3 0
3 years ago
Read 2 more answers
| 7x28 = (748) + ( 7 *__) =
masya89 [10]

Answer:

-23

Step-by-step explanation:

i dont know

3 0
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