All categories

3 years ago

How to find the first n terms of a quadratic sequence a1 = 3, r = 2, n =5

Mathematics

1 answer:

Nezavi [6.7K]3 years ago

3 0

We suspect you mean "geometric sequence". Multiply each term by r to get the next.

a1 = 3 . . . . . given

a2 = 3*2 = 6

a3 = 6*2 = 12

a4 = 12*2 = 24

a5 = 24*2 = 48

_____

A <em>quadratic</em> sequence is one in which second-differences are a constant. You have not provided enough information about the sequence so that more terms of a quadratic sequence could be found. While you may occasionally see problems asking you to write the formula for one of these, they are rarely studied in any detail in Algebra. At least three terms are needed before the next terms can be predicted.

You might be interested in

Find the elapsed time

lyudmila [28]

C. 6hr 59 minutes cause if you subtract 8:11-1:12 it’s 6 59

5 0

3 years ago

Read 2 more answers

Solve for x. Enter you answer in the box.

Nikitich [7]

Answer:

x = 6

Step-by-step explanation:

AD is a midline segment and divides EB and EC in the same proportion, that is

$\frac{EA}{AB}$ = $\frac{ED}{DC}$

Substituting in values gives

$\frac{16}{x+2}$ = $\frac{12}{24}$ = $\frac{1}{2}$ ( cross- multiply )

5x + 2 = 32 ( subtract 2 from both sides )

5x = 30 ( divide both sides by 5 )

x = 6

8 0

4 years ago

Write the slope intercept for 2x - 5y = -5

xxMikexx [17]

Answer:

the slope is $\frac{2}{5}$ and the y-intercept is $1$

Step-by-step explanation:

if we can get it to $y=mx+b$ form, then it's easy since the slope is $m$ and the y-intercept is $b$

solve $2x-5y=-5$ for $y$

$2x-5y=-5$

minus 2x from both sides

$-5y=-2x-5$

divide by -5 both sides

$5y=\frac{2}{5}x+1$

match

$m=\frac{2}{5}$ and $b=1$

the slope is $\frac{2}{5}$ and the y-intercept is $1$

8 0

3 years ago

Read 2 more answers

Simply (7)(-6)<br> show work

spin [16.1K]

$7*(-6)=-42$

Multiply 7 and 6 to get 42 and add a negative to 42 since one number in any multiplication problem will always have a negative answer.

Therefore it's -42.

Hope that helps.

3 0

3 years ago

7. The total cost to rent a truck is $100 and $0.20 per km.

eduard

Answer:

. The total cost to rent a truck is $100 and $0.20 per km. a. Determine an algebraic model for the relationship between total cost and distance driven. Use Cto represent total cost ($) to rent the truck and d to represent distance driven (km). C=$100+$0.20d b. Create a graphical model. You may use the Linear Graphing Tool or Desmos to create your graphical model. Take a screenshot of your graph and paste it here.

Thank you

4 0

3 years ago