solvarmedw

2022-10-07

Find the common ratio of the geometric sequence 7, 28, 112,...

recreerefr

Beginner2022-10-08Added 7 answers

The common ratio for this problem is 4.

The common ratio is a factor that when multiplied by the current term results in the next term.

First term: 7

$7\cdot 4=28$

Second term: 28

$28\cdot 4=112$

Third term: 112

$112\cdot 4=448$

Fourth term: 448

This geometric sequence can be further described by the equation:

$a}_{n}=7\cdot {4}^{n-1$

So if you want to find the 4th term , n=4

${a}_{4}=7\cdot {4}^{4-1}=7\cdot {4}^{3}=7\cdot 64=448$

Note:

$a}_{n}={a}_{1}{r}^{n-1$

where $a}_{1$ is the first term, $a}_{n$ is the actual value returned for a specific nth term and r is the common ratio.

The common ratio is a factor that when multiplied by the current term results in the next term.

First term: 7

$7\cdot 4=28$

Second term: 28

$28\cdot 4=112$

Third term: 112

$112\cdot 4=448$

Fourth term: 448

This geometric sequence can be further described by the equation:

$a}_{n}=7\cdot {4}^{n-1$

So if you want to find the 4th term , n=4

${a}_{4}=7\cdot {4}^{4-1}=7\cdot {4}^{3}=7\cdot 64=448$

Note:

$a}_{n}={a}_{1}{r}^{n-1$

where $a}_{1$ is the first term, $a}_{n$ is the actual value returned for a specific nth term and r is the common ratio.

Find the volume V of the described solid S

A cap of a sphere with radius r and height h.

V=??

Whether each of these functions is a bijection from R to R.

a) $f(x)=-3x+4$

b) $f\left(x\right)=-3{x}^{2}+7$

c) $f(x)=\frac{x+1}{x+2}$

?

$d)f\left(x\right)={x}^{5}+1$In how many different orders can five runners finish a race if no ties are allowed???

State which of the following are linear functions?

a.$f(x)=3$

b.$g(x)=5-2x$

c.$h\left(x\right)=\frac{2}{x}+3$

d.$t(x)=5(x-2)$ Three ounces of cinnamon costs $2.40. If there are 16 ounces in 1 pound, how much does cinnamon cost per pound?

A square is also a

A)Rhombus;

B)Parallelogram;

C)Kite;

D)none of theseWhat is the order of the numbers from least to greatest.

$A=1.5\times {10}^{3}$,

$B=1.4\times {10}^{-1}$,

$C=2\times {10}^{3}$,

$D=1.4\times {10}^{-2}$Write the numerical value of $1.75\times {10}^{-3}$

Solve for y. 2y - 3 = 9

A)5;

B)4;

C)6;

D)3How to graph $y=\frac{1}{2}x-1$?

How to graph $y=2x+1$ using a table?

simplify $\sqrt{257}$

How to find the vertex of the parabola by completing the square ${x}^{2}-6x+8=y$?

There are 60 minutes in an hour. How many minutes are there in a day (24 hours)?

Write 18 thousand in scientific notation.