1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yan [13]
3 years ago
14

Need answer ASAP *MARKING BRAINLIEST

Mathematics
1 answer:
NikAS [45]3 years ago
8 0

Answer:

an = 4n +5

Step-by-step explanation:

First we need to find a common difference

d = a2-a1 = 13-9 = 4

The formula for an

an =a1+d(n-1)

an = 9 + 4(n-1)

Distributing

an = 9+4n-4

Combine like terms

an = 4n +5

You might be interested in
The length of a rectangle is 5 meters less than 3 times the width. The perimeter is 46 meters. Find the width.
Taya2010 [7]
Length=3width-5
(2(x))+(2(3x-5)=46
2x+6x+10=46
8x=56
x=7
width=7 length=16
5 0
3 years ago
In the 1990s the demand for personal computers in the home went up with household income. For a given community in the 1990s, th
WITCHER [35]

Answer:

a) 0.5198 computers per household

b) 0.01153 computers

Step-by-step explanation:

Given:

number of computers in a home,

q = 0.3458 ln x - 3.045 ;   10,000 ≤ x ≤ 125,000

here x is mean household income

mean income = $30,000

increasing rate, \frac{dx}{dt} = $1,000

Now,

a) computers per household are

since,

mean income of  $30,000 lies in the range of 10,000 ≤ x ≤ 125,000

thus,

q = 0.3458 ln(30,000) - 3.045

or

q = 0.5198 computers per household

b) Rate of increase in computers i.e \frac{dq}{dt}

\frac{dq}{dt} = \frac{d(0.3458 ln x - 3.045)}{dt}

or

\frac{dq}{dt}=0.3458\times(\frac{1}{x})\frac{dx}{dt} - 0

on substituting the values, we get

\frac{dq}{dt}=0.3458\times(\frac{1}{30,000})\times1,000

or

= 0.01153 computers

6 0
3 years ago
What is the surface area of this design?
vichka [17]

Answer:

280in

Step-by-step explanation:

10×6=60

60×2=<u>120</u>

6×10=<u>60</u>

4×4=16

16×2=<u>32</u>

4×6=<u>24</u>

4×4=<u>16</u>

6×6=<u>36</u>

<u>120+60+32+24+16+36=280</u>

<u />

4 0
3 years ago
What is the parallel slope intercept form pls answerr​
lys-0071 [83]

Answer:

the paralell slope is -4. The slope intercept equation is -4x-4

Step-by-step explanation:

hope this helps!

7 0
2 years ago
How to solve this task???
Radda [10]
So (m+n)/2= 7

To find m+n, multiply both sides by 2
m+n=14

Final answer: C
3 0
3 years ago
Read 2 more answers
Other questions:
  • your drop a rock off a bridge. the rocks height, h (in feet above the water), after t seconds is modeled by h = -16t2 + 541. wha
    12·1 answer
  • Identify the perfect cube root contained as a factor in 54. a. 8 b. 9 c. 27
    12·1 answer
  • Please help me with this ​
    5·1 answer
  • Please help me due today desperate
    9·2 answers
  • What is 12 divided by 7?
    8·2 answers
  • ........................................
    11·1 answer
  • Use the graph to find out over what interval f(x) is less than or equal to 0. PLEASE HELP ASAP!!!
    8·1 answer
  • Please help i will give you Brainlyist
    9·1 answer
  • Question 2 of 10
    12·1 answer
  • Solve.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!