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kipiarov [429]
3 years ago
9

Which type of sequence is shown? Check all that apply. 4, 8, 12, 16, . . . The numbers are quickly getting larger, so this is a

geometric sequence. The numbers are slowly getting larger, so this is an arithmetic sequence. This is an arithmetic sequence because there is a common difference of 4 between each term. This is a geometric sequence because there is a common ratio of 2 between each term. Add 4 to the last term to extend this arithmetic sequence. Multiply the last term by 2 to extend this geometric sequence.
Mathematics
1 answer:
melisa1 [442]3 years ago
7 0

Step-by-step explanation:

4, 8 , 12 , 16 .....

  • This is an arithmetic sequence because there is a common difference of 4 between each term.
  • This is a geometric sequence because there is a common ratio of 2 between each term.

Hope it will help.

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1- find the first term= ?, 90, 540, 3240
Luda [366]

Answer:

1. 15

2. 8

Step-by-step explanation:

The two sequence are geometric progression GP, because they follow a constant multiple (common ratio)

The nth term of a GP is;

Tn = ar^(n-1)

Where;

a = first term

r = common ratio

For the first sequence;

The common ratio r is

r = T3/T2 = 540/90 = 6

r = 6

T2 = ar^(2-1) = ar

T2 = 90 = ar

Substituting the values of r;

90 = a × 6

a = 90/6

a = 15

First term = 15

2. The sam method applies here.

Common ratio r = T3/T2 = 128/32 = 4

r = 4

T2 = ar^(2-1) = ar

T2 = 32 = ar

Substituting the values of r;

32 = a × 4

a = 32/4

a = 8

First term = 8

4 0
3 years ago
A semi circle has a radius 8.2 cm
zaharov [31]

Answer:

Step-by-step explanation:

Area=\frac{1}{2}*\pi *r^{2}\\\\=\frac{1}{2}*3.14*8.2*8.2\\\\=3.14*4.1*8.2\\

= 105.57

= 105.6 cm²

5 0
3 years ago
Read 2 more answers
What is the difference?
worty [1.4K]

Answer:

4th option

Step-by-step explanation:

Given

\frac{x}{x^2+3x+2} - \frac{1}{(x+2)(x+1)} ← expand denominator using FOIL

= \frac{x}{x^2+3x+2} - \frac{1}{x^2+3x+2}

Since the denominators are common, then subtract the numerators

= \frac{x-1}{x^2+3x+2}

5 0
3 years ago
3 points lie on an xy plane, with each point representing where a particular person lives. Amy lives at point (2,3); Brian lives
geniusboy [140]
The equidistant point for all three, will be the "centroid" of their triangular locations
thus \bf \textit{Centroid of a Triangle}
\begin{array}{llll}
Amy
\begin{array}{llll}
(2,3)\\
x_1,y_1
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\begin{array}{llll}
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x_2,y_2
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6 0
3 years ago
Which operation is not used in the phrase twice a number decreased by 4, divided by 8
drek231 [11]

Answer:

Step-by-step explanation:

twice a number .....multiplication

decreased by 4.....subtraction

divided by 8.....division

addition is missing <====

although, twice a number could also be addition.....but I have never  used it for addition

lets say ur number is 4.......twice the number 4 could be : 2 * 4 or 4 + 4

4 0
3 years ago
Read 2 more answers
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