Danelle Albright

2022-01-07

Find S, for the geometric sequences: $4,-20,100$

kalfswors0m

Beginner2022-01-08Added 24 answers

The sequence has a ratio that is common to

$r=\frac{-20}{4}=-5r$

$=\frac{100}{-20}=-5$

Since, the value of the $r<1$, the formula for the sum of the n term of the series is:

$S}_{n}=\frac{a(1-rn)}{1-r$

The total of the first five terms is then

$S}_{5}=\frac{4(1-(-5)\left\{5\right\})}{1-(-5)$

$=\frac{4(1+3125)}{1+5}$

$=4\frac{3126}{6}$

$=4\left(521\right)=2084$

Thus, the sum of the first five terms is 2084.

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.