3 years ago

Determine if the sequence below is arithmetic or geometric and determine the

1 answer:

5 0

The sequence is arithmetic since the common difference that is equal
d=11-15=7-11=-4
a(n) = a1 +(n-1)d
a1=15
=
a(n) = 15+(n-1)-4

You might be interested in

What is the length of CD? In this diagram, <br> ABC ~ EDC.

Alex777 [14]

Hey there!

Answer:

CD = 3.

Step-by-step explanation:

Since the triangles are similar, we can set up a ratio to determine the other side-lengths:

$\frac{12-x}{18} =\frac{x}{6}$

Cross multiply:

$6(12-x) = 18x$

Distribute the '6':

$72-6x = 18x$

Combine like terms and simplify:

$72 = 24x$

$x = 3$

Therefore, the length of CD is 3.

5 0

3 years ago

2/3 of a day (in hours) explain also

bezimeni [28]

Its 16
a day has 24 hours and 24/3 its 8 wich is 1/3 and if you multiply it by 2 its 2/3 which is 16

6 0

3 years ago

Use substitution to find the solution to the system of equations.

mote1985 [20]

Answer:

Ummm, so the answer is A. (-3,-2)

StepByStep Solution:

5x + 7(x+1) =-29

5x+7x+7=-29

12x=-36

x=-3

y=-3+1

y=-2

4 0

3 years ago

Read 2 more answers

How were the numbers 1 10 100 and 1000 written by romans?

Arturiano [62]

1 -- I
10 -- X
100 -- C
1000 -- M

8 0

3 years ago

Write an equation of the line that passes through the point (4, –5) with slope 2.

Jlenok [28]

Answer:

y + 5 = 2(x−4)

Step-by-step explanation:

slope = 2

y = mx + b

-5 = 2(4) + b

-5 = 8 + b

-8 -8

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

-13 = b

y = 2x - 13, in other words --> y + 5 = 2(x−4)

So, y + 5 = 2(x − 4) is the equation of the line that passes through (4, -5).

5 0

2 years ago

Read 2 more answers